Grid Tie Solar Inverter
GT5.0-NA
Owner’s Manual
Xantrex Grid Tie
Solar Inverter
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Xantrex Grid Tie Solar Inverter
Owner’s Manual
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About Xantrex
Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from
50 watt mobile units to one MW utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup
power applications in both grid-connected and stand-alone systems. Xantrex products include inverters, battery
chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute
electrical power.
Trademarks
Xantrex Grid Tie Solar Inverter is a trademark of Xantrex International. Xantrex and Xanbus are registered
trademarks of Xantrex International.
Other trademarks, registered trademarks, and product names are the property of their respective owners and are used
herein for identification purposes only.
Notice of Copyright
Xantrex Grid Tie Solar Inverter Owner’s Manual © November 2006 Xantrex International. All rights reserved.
Exclusion for Documentation
UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)
(A) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(B) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL,
DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION.
THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK; AND
(C) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN
TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED
XANTREX CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED AT
WWW.XANTREX.COM.
Date and Revision
November 2006 Revision A
Manual Part Number
975-0320-01-01
Product Part Number
864-0118
Contact Information
Telephone: 1 800 670 0707 (toll free North America)
1 360 925 5097 (direct)
Fax:
1 360 925 5143 (direct)
Email:
Web:
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About This Manual
The purpose of this Owner’s Manual is to provide explanations and procedures for
installing, operating, maintaining, and troubleshooting the Xantrex Grid Tie Solar
Inverter™.
Scope
The manual provides safety guidelines, detailed planning and setup information. It
provides procedures for installing the inverter and information about operating
and troubleshooting the unit. It does not provide details about particular brands of
photovoltaic (PV) panels. You need to consult individual PV manufacturers for
this information.
Audience
Organization
This manual does not provide sufficient information for anyone but a qualified
installer to install this product. Installers should be electricians or technicians fully
educated on the hazards of installing electrical equipment. The monitoring and
operation information in this manual is intended for anyone who needs to operate
a GT Inverter.
This manual is organized into 6 chapters and an appendix.
Chapter 1 contains information about the features and functions of the Xantrex
Grid Tie Solar Inverter.
Chapter 2 provides information about installing the GT Inverter. It contains
information on determining a suitable location for installation, PV array
requirements, and procedures for mounting the unit.
Chapter 3 provides information about DC and AC wiring, and grounding the GT
Inverter and the PV array.
Chapter 4 contains information on starting up the Xantrex Grid Tie Solar Inverter
and performing a functional test.
Chapter 5 contains information for understanding the LCD screens and the LED
indicators.
Chapter 6 contains information about how to provide general maintenance for the
Xantrex Grid Tie Solar Inverter. It also provides information about troubleshooting
the unit.
Appendix A contains information about the specifications of the Xantrex Grid Tie
Solar Inverter.
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About This Manual
Conventions Used
The following conventions are used in this guide.
WARNING
Warnings identify conditions that could result in personal injury or loss of life.
CAUTION
Cautions identify conditions or practices that could result in damage to the unit or other
equipment.
Important: These notes describe things which are important for you to know, but not as
serious as a caution or warning.
Abbreviations and Acronyms
CEC
California Energy Commission
CSA
GT
Canadian Standards Association
Grid Tie
LCD
LED
MPPT
NEC
PV
Liquid Crystal Display
Light Emitting Diode
Maximum Power Point Tracking
US National Electrical Code NFPA-70
Photovoltaic
PVGFP PV Ground Fault Protection
STC
UL
Standard Test Condition
Underwriters Laboratories
Volts AC
Vac
Vdc
Volts DC
V
V
Voltage at Maximum Power
MPP
OC
Open Circuit Voltage
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About This Manual
Symbols Used
Ground
In this guide: Important information, warnings, or cautions.
On the product: Important information, warnings or cautions with further
explanation in the product guide.
Caution, risk of electric shock.
Hot surface—risk of burns.
FOR AUTHORIZED SERVICE PERSONNEL: Before opening cover,
disconnect DC and AC power and wait 5 minutes to allow internal voltages
to reach safe levels.
5 min.
NOTE: there are no user-serviceable parts inside.
Refer to the operating instructions.
Related Information
You can find more information about Xantrex Technology Inc. as well as its
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Important Safety Instructions
SAVE THESE INSTRUCTIONS—This manual contains important instructions that shall be followed
during the installation and maintenance of the Xantrex Grid Tie Solar Inverter.
WARNING
The following warnings identify conditions or practices that could result in personal injury or loss of life.
1. Before installing and using the GT Inverter, read all instructions and cautionary markings on the
inverter, wiring box, and all appropriate sections of this guide.
2. To reduce risk of fire hazard, do not cover or obstruct the heat sink.
3. Under some conditions, the GT Inverter heat sink can reach temperatures hot enough to cause skin
burns if accidentally touched. Ensure that the GT Inverter is located away from normal traffic areas.
4. Use only accessories recommended or sold by the manufacturer. Doing otherwise may result in a risk
of fire, electric shock, or injury to persons.
5. To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition and that
wire is not undersized. Do not operate the GT Inverter with damaged or substandard wiring.
6. Do not operate the GT Inverter if it has received a sharp blow, been dropped, or otherwise damaged in
any way. If the GT Inverter is damaged, see the Warranty section.
7. Do not disassemble the GT Inverter. It contains no user-serviceable parts. See Warranty for instructions
on obtaining service. Attempting to service the GT Inverter yourself may result in a risk of electrical
shock or fire and will void the factory warranty.
8. Authorized service personnel should reduce the risk of electrical shock by disconnecting both AC and
DC power from the GT Inverter before attempting any maintenance or cleaning or working on any
circuits connected to the inverter. Turning off controls will not reduce this risk. Internal capacitors
remain charged for 5 minutes after disconnecting all sources of power.
9. Normally grounded conductors may be ungrounded and energized when a ground fault is indicated.
10. The GT Inverter must be connected to an AC equipment-grounding conductor directly and a DC
grounding electrode conductor to a single point ground.
11. The AC Neutral connection is for voltage sensing only and is not used as a current carrying conductor,
nor is it bonded to ground.
CAUTION
The following caution identifies conditions or practices that could result in damage to the unit or other
equipment.
Observe the clearance recommendations as described on page 2–7. Do not install the GT Inverter in a zero-
clearance or non-ventilated compartment. Overheating may result.
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Safety
Location of Safety and Data Labels
The figure below shows the location of the safety label and the data label with model, serial and part
number information.
Safety Label
Data Label
FCC Information to the User
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
•
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
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Contents
Important Safety Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
Location of Safety and Data Labels - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - viii
FCC Information to the User - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - viii
1
2
Introduction
About the Xantrex Grid Tie Solar Inverter- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–1
Standard Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Front Panel Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Wiring/Disconnect Box - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Installation
Installation Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–1
Planning the Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–1
Inverter Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–1
PV Array Voltage and MPPT Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3
Mounting the Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Dimensions and Knockout Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Installing the Mounting Bracket - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Mounting the Inverter on the Bracket - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8
3
Wiring the Inverter
Grounding Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–1
Ground Fault Fuse - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
Wiring Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
AC Circuit Breaker Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
DC/AC Disconnect Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Accessing the Wiring Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5
Connecting the DC Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–7
DC Wiring for Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–9
Connecting the AC Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–10
DC and AC Wiring for Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–11
Communications Wiring for Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–12
Xanbus Network Technology - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–12
Guidelines for Routing the Network Cables - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–15
Connecting Network Cable Between Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - 3–15
Communications Wiring for Monitoring a Single Inverter - - - - - - - - - - - - - - - - - - - - - - - 3–15
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Contents
4
Starting the Inverter
Startup Procedure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–1
Checking the PV Array DC Voltage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2
Checking the AC Utility Voltage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2
Replacing the Wiring/Disconnect Box Cover - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–2
Starting up the GT Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3
Commissioning Multiple Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–3
Disconnect Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5
Locating the Firmware Version Number- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4–5
5
Monitoring the Inverter
Monitoring the Front Panel Display- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–1
Front Panel Display Screens and What They Mean - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2
Startup Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–2
Normal Operation Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–4
Offline Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–6
Fault Mode - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–8
Special Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5–10
Custom Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5–10
Status Indicator Lights- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5–11
6
Maintenance and Troubleshooting
Factors Affecting GT Inverter Performance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–1
PV Array Factors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–1
Other Factors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–2
Performing General Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3
Replacing Parts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–3
Replacing the Ground Fault Protection Fuse - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–4
Replacing the Inverter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–6
Identifying Error/Fault Conditions and Solutions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6–9
A
Specifications
Electrical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2
Input - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2
Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–2
Adjustable Voltage, Frequency and Reconnection Settings - - - - - - - - - - - - - - - - - - - - - - - A–3
Output Power Versus Ambient Temperature- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–3
Efficiency - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4
Environmental Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4
User Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–4
Display Accuracy - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5
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Contents
Mechanical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5
Regulatory Approvals - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A–5
Warranty and Return Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - -WA–1
Index - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -IX–1
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Introduction
1
Chapter 1 contains information about the features and functions of the
Xantrex Grid Tie Solar Inverter.
About the Xantrex Grid Tie Solar Inverter
The Xantrex Grid Tie Solar Inverter (GT Inverter) is designed to convert solar
electric (photovoltaic or PV) power into utility-grade electricity that can be used
by the home or sold to the local power company.
Installing the GT Inverter consists of mounting it to the wall and connecting the
DC input to a PV array and the AC output to the utility. See Figure 1-1 for a
simple diagram of a typical installation.
In order to operate, the GT Inverter must have grid power available and connected.
It will not provide backup power if the AC grid fails.
Photovoltaic (PV)
Panels - PV Array
Utility
Meter
Utility Grid
Harvested
solar energy
Surplus power routed
to Utility Grid
Power routed
to loads
DC converted
to AC
Main Utility
Grid Tie Inverter
Service Panel
Xantrex
GT Inverter
Loads
Figure 1-1 Basic System Overview
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Introduction
PV compatibility
The GT Inverter is designed to take advantage of solar modules configured as high
voltage PV string arrays—single crystalline, poly crystalline, or thin film—with a
240 to 550 Vdc input voltage Maximum Power Point range.
Maximum Power
Point Tracking
(MPPT)
The GT Inverter uses Xantrex proprietary Maximum Power Point Tracking
(MPPT) technology to harvest the maximum amount of energy from the solar
array. Xantrex MPPT learns your array’s specific characteristics, maximizing its
output at all times.
High efficiency
Expandable
The high-frequency, solid-state design of the GT Inverter is extremely efficient—
up to 96.2%.
Multiple GT Inverters may be networked together for increased net metering
capacity or future system growth. The GT Inverter GT5.0 has adjustable voltage
and frequency disconnect settings and can be aggregated above 30 kW on a single
point-of-common-coupling (PCC). See “Adjustable Voltage, Frequency and
Reconnection Settings” on page A–3.
Communications
protocol
The GT Inverter uses the Xanbus® communications protocol, enabling it to
communicate with multiple units connected within the system. For more
information, see “Xanbus Network Technology” on page 3–12.
Standard Features
The GT Inverter has the following standard features:
•
•
Sealed inverter section protecting power electronic components;
Liquid Crystal Display (LCD) providing easy-to-read system status and daily
cumulative energy production information;
•
•
Two LED indicator lights providing status and ground fault indication;
Wiring/disconnect box providing protection for all AC and DC connections
and eliminating exposed “live” wiring if the inverter is removed.
The wiring/disconnect box has been designed to be physically mated to the
electronics section of the GT Inverter at the factory, but remains in place as a
non-serviceable item in the event that the inverter electronics section is ever
required to be removed. The inverter and wiring/disconnect box together form
an NEMA 3R enclosure to allow outdoor installation.
WARNING: Shock hazard
The 600 volt DC/AC disconnect in the wiring/disconnect box meets NEC Article 690. It is
a non-serviceable component and shall remain in place. Separating the inverter and
wiring/disconnect box, or removing the wiring/disconnect box cover can expose
energized conductors. PV input circuits in the wiring box ahead of the switch remain
energized even when the switch is in the “off” position—hazardous voltage will still be
present on the DC input (PV) terminals under the clear plastic insulation barrier inside the
wiring/disconnect box.
1–2
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About the Xantrex Grid Tie Solar Inverter
Front Panel Features
Heat Sink
LCD
LED Indicator Lights
Grid Tie Solar Inverter
Wiring/Disconnect Box
DC/AC Disconnect Switch
Mounting Slots
Figure 1-2 Main Features of the GT Inverter
Wiring/Disconnect Box
The wiring/disconnect box is standard for all North American models of the GT
Inverter. The wiring/disconnect box provides a location for making AC, DC and
ground connections. It also contains the DC/AC (PV array/utility) disconnect
switch. When used with the GT Inverter, the DC/AC disconnect switch is 600V
AC and DC rated and is identified on the outside by an illustration showing the
open and closed switch positions. The switch is lockable, and meets NEC section
690 requirements as a means of disconnect.
In jurisdictions where the local utility requires that the AC disconnect be capable
of being locked in the open position by its service personnel, this disconnect
switch can also serve as a lockable isolating device.
Important: In North America and other locations the wiring/disconnect box is an
electrical code requirement. Regulatory approval is based on the wiring/disconnect box
always being attached to the inverter during operation. Any attempt to remove this box
will invalidate the approvals and create an electrical hazard.
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Installation
2
Chapter 2 provides information about installing the GT Inverter. It contains
information on determining a suitable location for installation, PV array
requirements, and procedures for mounting the unit.
Installation Options
The GT Inverter may be installed as a single inverter for a single PV array of one
to three PV strings (an external fuse box is required when three PV strings are
connected), or in a multiple inverter configuration for multiple PV arrays.
If multiple inverters are used, each inverter must be wired to an independent PV
array.
Communications between inverters can be enabled by installing network cabling
to the inverter RJ45 ports. See “Connecting Network Cable Between Multiple
Inverters” on page 3–15.
Planning the Installation
Ensure that you have obtained all permits required by local authorities or utilities
before beginning installation.
Inverter Location
WARNING: Burn hazard
Do not install in a location where people can accidentally come into contact with the front
of the inverter. High temperatures can be present on the face of the inverter, causing a
potential burn hazard.
In extreme conditions, the GT Inverter chassis can reach temperatures over 70° C
(158° F), which can cause skin burns if accidentally touched. Ensure that the GT Inverter
is located away from normal traffic areas.
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Installation
Inverter failure due to improper installation will void the inverter warranty.
Consider the following when determining where to install the inverter.
•
The GT Inverter uses a Type 3R-rated enclosure (vertical mount only)
that can be mounted indoors or outdoors. (Type 3R enclosures are
intended for outdoor use primarily to provide a degree of protection
against falling rain; and to be undamaged by the formation of ice on the
enclosure.)
Indoor/
Outdoor
•
•
While the 3R-rated enclosure protects the GT Inverter from moisture,
outdoor installations should be located away from lawn sprinklers and
other sources of spray.
A sun shade is recommended for outdoor installations. In bright sun
conditions, when the GT Inverter is at or near full output with an
ambient temperature above 40 °C (104 °F), shading the unit will help
increase inverter performance. A sun shade can also protect the inverter
from dust, debris, and birds. The sun shade should be made from an
opaque material that provides shade for the heat sink. It should be large
enough and positioned so that it shades the heat sink for all sun angles.
Ensure that the shade is installed according to the minimum clearances
specified on page 2–7.
•
•
•
The GT Inverter must be mounted vertically on a wall or pole.
Do not mount the GT Inverter horizontally.
If mounting the inverter indoors on a south-facing wall, ensure the wall
is insulated to reduce the amount of heat absorbed by the inverter.
Unless walls are properly insulated, avoid mounting the inverter
indoors on any wall that is directly exposed to the sun.
Orientation
Temperature
•
•
Ensure that the GT Inverter is mounted in a location where the ambient
temperature range is -25 to +65 °C (-13 to +149 °F).
Above 40 °C (104 °F), the GT Inverter may derate power output.
See“Output Power vs. Ambient Temperature” on page A–3 and
“Environmental Specifications” on page A–4.
•
•
At extreme hot or cold temperatures, the front panel LCD may not
function normally.
Outdoors, the GT Inverter requires at least 100 cm (39 inches) of
clearance between the bottom of the unit and the ground.
Ground
Clearance
•
To minimize resistance and resulting power loss, ensure that wire
lengths between the PV array and the GT Inverter and between the
inverter and the Main Utility Service Panel are kept to a minimum.
Maximum distances will depend on wire gauges used and PV array
output voltages.
Distance
•
•
Excessive debris (such as dust, leaves, and cobwebs) can accumulate
on the unit, interfering with wiring connections and ventilation. Do not
install in a location where debris can accumulate (under a tree, for
example).
Debris free
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Planning the Installation
PV Array Voltage and MPPT Requirements
WARNING: Shock hazard
Whenever a PV array is exposed to sunlight, a shock hazard exists at the output wires or
exposed terminals. To reduce the risk of shock during installation, cover the array with an
opaque (dark) material before making any connections, and always test for voltage before
touching exposed wiring or devices.
MPPT operational
window
The MPPT software maximizes the output energy of solar arrays as long as the
operating voltage is within the MPPT operational window. Ensure that the PV
array used in the system operates within the MPPT operational window.
Effects of array voltages outside of the MPPT operational window are shown in
Table 2-1.
Table 2-1 MPPT Operational Window
Voltage
< 240 Vdc
Effect of Array Voltage
Inverter Mode
Off-line
V
Inverter not operating.
oc
V
< 240 Vdc
Operating voltage shifts to 240 Vdc; the array is not at its
maximum power point.
On-line (low power)
MPP
(V > 240 Vdc)
oc
V
V
V
240 to 550 Vdc
550 to 600 Vdc
> 600 Vdc
Maximum harvest of solar energy.
On-line (MPPT window)
On-line (power derating)
Off-line (shutdown)
MPP
MPP
MPP
Does not allow maximum harvest of solar energy.
Inverter stops delivering power and shuts down. Inverter
may be damaged.
(or V > 600 Vdc)
oc
Voltage
requirements
The maximum power point voltage of a string connected to the GT Inverter should
preferably be above 240 Vdc. If it is less than 240 Vdc, the inverter continues to
operate, but it regulates the PV voltage to 240 V. Because the array is not
operating at its maximum power point, this may result in lower than expected
energy harvest. If Voc is below 240 Vdc, the inverter remains off-line and does not
deliver power.
CAUTION: Equipment damage
To prevent damage to the inverter, the array voltage must never exceed 600 V (open
oc
circuit voltage) under any condition.
The open circuit voltage of the array under normal conditions should be above
240 Vdc.
The short circuit current (Isc) rating of the array at any temperature must not
exceed the Isc rating of the inverter. For maximum solar energy harvest, it is
recommended that the effective power output of the array be matched with the
input power capacity of the inverter.
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Installation
Guidelines for Matching PV Array Size to Xantrex Grid Tie Solar Inverter Input
•
Consider the expected Voc of the string under all possible conditions. The
panel manufacturer provides a Voc rating per panel, but it is usually rated at
25 °C (77 °F). Ensure that the Voc rating at the coldest ambient temperature
does not exceed 600 Vdc. Panel voltage increases in cold temperatures—the
panel manufacturer should be able to provide a coefficient of voltage increase
per degree.
•
•
The NEC also has required temperature/voltage deratings that must be used;
these can be found in article 690 of the NEC. You need to determine the
coldest temperatures expected on the site, and size the array strings
accordingly. To prevent inverter damage, the array’s maximum DC voltage in
the coldest expected temperature, with both manufacturer coefficient and
NEC derating, must not exceed 600 Vdc.
Panel voltage decreases in high temperatures. This will affect the panels’ V
MPP
and V . Again, the manufacturer’s coefficient must be used with the highest
oc
expected temperature to determine the minimum V
and V .
oc
MPP
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Mounting the Inverter
Mounting the Inverter
Dimensions and Knockout Locations
The dimensions of the inverter and the mounting bracket and some of the
knockout locations on the wiring/disconnect box are shown in Figure 2-1 and
Figure 2-2.
Four 27 or 35 mm (1 or 1-3/8 inch) dual knockouts are provided on the back and
bottom of the unit to accommodate wiring.
Four 27 mm (1 inch) conduit holes on the sides of the wiring/disconnect box (two
on each side) are filled with plastic plugs, which can be removed to insert conduit
nipples as required for multiple inverter installations. One or two of these side
conduit holes may be used to accommodate Xanbus network cables connected
between multiple inverters.
13.7
(5 3/8)
55
(21 5/8)
2.7 cm (1")
conduit holes
with threaded
caps, both
sides
69.9
(27 1/2)
72.6
(28 9/16)
6.52
(2 9/16)
11
(4 5/16)
40.3 (15 7/8)
27.9 (11)
6.15
(2 7/16)
Dual 3.5 cm or 2.7 cm
(1 3/8" or 1") knockouts
Dual 3.5 cm or 2.7 cm
(1 3/8" or 1") knockouts
5.2 (2)
All measurements
in cm (inches).
6.2 (2 7/16)
27.9 (11)
Figure 2-1 Dimensions of GT Inverter and Knockout Locations
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Installation
Installing the Mounting Bracket
The mounting bracket is designed to be affixed to the vertical structure or surface
to which the GT Inverter will be mounted. The GT Inverter mounting hooks attach
to the flanges on the mounting bracket.
If mounting more than one inverter, install each mounting bracket at least 15 cm
(6 inches) apart to provide enough space for the inverters to hang side by side.
Mounting bracket
Back side of the inverter
25.3 (10)
Rectangular slots × 25:
0.8 × 3 (5/16 × 1 3/16)
Mounting hooks
Mounting flanges
All measurements
in cm (inches).
3.8 (1 1/2) from
bottom of bracket
to knockout center
1.3 (1/2) from side of bracket
to knockout center
Mounting slots for
securing the inverter
Figure 2-2 Mounting Bracket and GT Inverter
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Mounting the Inverter
Clearance Requirements
For optimal and safe operation, ensure there is adequate clearance around the
inverter. If the minimum clearances in Table 2-2 are are not met, rated power may
not be achieved.
Table 2-2 Inverter Clearance Requirements
Location
Above
Minimum Clearance
30 cm (12 inches)
Outdoors:
Below:
The inverter extends
below the bracket by
approximately 10 cm
•
•
Inverter
Bracket
•
•
100 cm (39 inches)
110 cm (43 inches)
For indoor installations, there is no clearance (4 inches)
requirement between the bottom of the
inverter and the ground.
In front
30 cm (12 inches) minimum. 91 cm (36 inches) are recommended for
easy access for reading the display, avoiding accidental contact with hot
surface, and servicing the inverter.
On sides
Units can be mounted side by side with no clearance between them, but
15 cm (6 inches) of clearance around the outside edges of the outermost
two units is recommended. In hot climates, some clearance between units
may be needed to prevent thermal derating.
Surfaces for Mounting
The GT Inverter can be mounted to a vertical surface such as wallboard, wood
siding, concrete wall, or pole assembly. Ensure the mounting surface or structure
can support the weight of the inverter (26 kg/58 lb) as well as the associated
wiring and conduit. Installation onto wallboard requires either the use of a
supporting material such as plywood or securing the mounting screws to
supporting wall studs.
Important:
•
Local codes may impose additional mounting requirements in earthquake or other
high-risk areas.
•
No mounting hardware is supplied with the GT Inverter. It is recommended to use
6 mm (¼ inch) diameter fasteners. However, because mounting surfaces can vary,
installers must select appropriate hardware for each installation.
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Installation
Mounting the Inverter on the Bracket
Place the inverter’s mounting hooks over the flanges on the bracket. Ensure the
inverter is seated properly, then secure the bottom of the inverter with appropriate
screws or anchors through the mounting slots.
Flange with
mounting slots
110 cm (43")
Ground/floor
100 cm (39")
Ground clearance
requiredforoutdoor
installation
Figure 2-3 Placing the Inverter on the Mounting Bracket
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Wiring the Inverter
3
Chapter 3 provides information about DC and AC wiring, and grounding
the GT Inverter and the PV array.
This chapter does not provide sufficient information for anyone but a
qualified installer to install this product. Installers should be electricians or
technicians fully educated on the hazards of installing electrical equipment.
Grounding Requirements
AC Grounding
The GT Inverter must be connected to the AC ground from the utility via the GT
Inverter ground bar.
PV Grounding
The PV array (frame) ground should be connected to the GT Inverter ground bar.
The size for the conductor is usually based on the size of the largest conductor in
the DC system.
A DC grounding electrode conductor may be required by the Authority Having
Jurisdiction (AHJ). Use the GT Inverter ground bar for this connection (see
Figure 3-2 on page 3–3).
CAUTION: Equipment damage
Provide adequate clearance for grounding wires inside the GT Inverter wiring box. Ensure
that the bare copper grounding wire is more than ½ inch clear of the DC/AC interconnect
circuit board.
Two ¼-inch (7 mm) knockouts in the bottom of the wiring box are intended for
routing the ground conductors to the ground bar. See Figure 3-1.
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Wiring the Inverter
Ground bar
Knockouts for ground conductors
Figure 3-1 Ground Conductor Knockouts
The ground bar accepts wires up to #4 AWG. Torque ground wires as specified in
Table 3-1.
Table 3-1 Torque Values for Ground Wiring
Wire Size
Torque Value
in-lb Nm
2.5–6.0 25–35
2
AWG
14–10
8
mm
3.0–4.0
3.4–4.5
4.0–5.0
10
30–40
35–45
6–4
16–25
Important: In most models, the negative PV conductor is internally bonded to the
ground system within the inverter’s ground fault detection circuit. Inverter models marked
with the “-POS” suffix are positive grounded and have the positive PV conductor
internally bonded to the ground system through the inverter’s ground fault protection
circuit. It is important that the negative (or positive) PV conductor is not bonded to the
ground at any other point in the system.
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Grounding Requirements
PV1 String #1
PV1 String #2 PV1 String #3
L2
L1
Neutral
L1
L2
L1 L2
N
G
Ground
Grounding electrode
Figure 3-2 Grounding Diagram
Ground Fault Fuse
The GT Inverter is equipped with a 600 volt, 1 amp ground fault protection fuse
(replace with Littelfuse KLKD 1 or equivalent).
WARNING: Shock hazard
Do not attempt to service the ground fault protection fuse yourself. This should only be
done by qualified service personnel, such as certified electricians or technicians. See
“Replacing the Ground Fault Protection Fuse” on page 6–4.
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Wiring the Inverter
Wiring Requirements
WARNING: Shock hazard
Check for existing electrical or plumbing prior to drilling holes in the walls.
The AC and DC terminal blocks in the GT Inverter accept wire sizes from
#14 AWG to #6 AWG. Undersized wiring can result in significant power losses
and reduction in system efficiency. Strip all wires 9 mm (3/8 inch) and torque to a
maximum 16 in-lb (1.8 Nm). Use copper conductors only, rated 90 °C.
For safety and compliance with the NEC, run AC, DC, and communication wires
in separate conduits.
WARNING: Fire hazard
Wiring should not be undersized. Wire sizes must be coordinated with the array maximum
short circuit current or the AC breaker sizes used. Ensure wiring is in accordance with the
NEC or applicable codes.
AC Circuit Breaker Requirements
The main utility service panel must dedicate a double pole breaker to operate each
GT Inverter installed. This breaker must be sized to handle the rated maximum
output voltage and current of the GT Inverter (see “Electrical Specifications”,
“Output” on page A–2).
DC/AC Disconnect Switch
The wiring box includes a 600 volt PV/Utility disconnect switch that switches
both AC and DC at the same time.
Depending on the installation, an external AC and/or DC disconnect may be
required if the inverter is installed in a location not easily accessible to utility or
fire personnel. Consult local authorities for additional information.
Important: The DC terminal block has six inputs for connecting up to three PV strings.
In accordance with applicable codes, if the array consists of more than two strings,
external fusing may be required to prevent conductor overloads.
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Accessing the Wiring Terminals
WARNING: Shock hazard
Do not remove the wiring/disconnect box. The 600 volt DC/AC disconnect in the wiring
box meets NEC Article 690. It is a non-serviceable component and shall remain in place.
Removal can expose energized conductors.
Use caution when working around sources of DC power. Although the DC/AC disconnect
switch disconnects the inverter from DC power, hazardous voltages from paralleled PV
strings will still be present upstream of the switch and inside the wiring box. To reduce the
risk of shock during installation, cover the array with an opaque (dark) material before
making any connections, and always test for voltage before touching exposed wiring or
devices.
Accessing the Wiring Terminals
You must remove the GT Inverter wiring box cover to access the terminal blocks,
ground bar and communications ports.
To remove the wiring box cover:
•
Using a Phillips screwdriver, remove the two screws on the bottom side of the
wiring box and lift the cover off the wiring box (see Figure 3-3).
Wiring box
cover screws
Figure 3-3 Removing the Wiring Box Cover
AC and DC connections are made at the wiring terminals shown in Figure 3-5.
Insulating barrier
The clear plastic insulating barrier inside the wiring box is a permanent
component. It is intended to separate the high-voltage AC and DC wiring from
any communications cabling.
When wiring the unit, it is necessary to pull the barrier back to access the wiring
terminals. See Figure 3-4. After completing the wiring, return the insulating
barrier to its original position.
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Wiring the Inverter
Lift bottom edge of barrier
to access wiring terminals.
Figure 3-4 Insulating Barrier Location
(AC L1) (AC L2) (NEUT)
(GND)
(PV-)
(PV+)
Figure 3-5 AC and DC Terminal Block Location
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Connecting the DC Wiring
Connecting the DC Wiring
WARNING: Shock hazard
Use caution when working around sources of DC power. Although the DC/AC disconnect
switch disconnects the inverter from DC power, hazardous voltages from paralleled PV
strings will still be present upstream of the switch and inside the wiring box. To reduce the
risk of shock during installation, cover the array with an opaque (dark) material before
making any connections, ensure the DC/AC Disconnect Switch is set to OFF (see
Figure 3-6), and always test for voltage before touching exposed wiring or devices.
Figure 3-6 DC/AC Disconnect Switch Positions
The following procedure is illustrated in Figure 3-7. If there is more than one PV
string, label the positive and negative wire pairs appropriately (for example:
PV1-String #1 POS, PV1-String #1 NEG, PV1-String #1 GND,
PV1-String #2 POS, etc.).
To wire the PV array to the GT Inverter:
1. Connect the POSITIVE (+) wire from the PV1 string #1 to one of the PV+
terminals.
2. Connect the NEGATIVE (–) wire from the PV1 string #1 to one of the
PV– terminals.
3. Repeat for the PV1 string #2, if there is one.
4. Repeat for the PV1 string #3, if there is one.
5. Ensure all connections are correctly wired and properly torqued to a
maximum 16 in-lb (1.8 Nm).
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Wiring the Inverter
PV1 String #1
PV1 String #2 PV1 String #3
+
–
+
+
–
–
L1 L2
N
G
Grounding not shown.
Figure 3-7 DC Connections for Multiple PV Strings
Important: Depending upon installation and local codes, fusing and/or a combiner
box may be required. This fusing and combiner box are to be provided by the installer.
Important: A DC grounding electrode conductor may be required by the AHJ. Check
local codes before installation.
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Connecting the DC Wiring
DC Wiring for Multiple Inverters
For installations with multiple GT Inverters, separate solar arrays are required for
each unit. The output of each GT Inverter feeds a separate dual-pole 30-amp
circuit breaker (L1 and L2) in the main utility service panel.
For such installations, complete the wiring and perform the commissioning
procedure for each inverter one at a time. For the commissioning procedure, see
“Commissioning Multiple Inverters” on page 4–3.
WARNING: Shock hazard and equipment failure
Ensure each inverter is correctly connected to its own PV array(s) and that no wires are
crossed. If inverters “share” more than one PV array, an input current difference of over 1
A between arrays can cause each inverter to fail—the ground fault protection fuse will
blow, followed by short circuit failure. This failure will also generate hazardous voltages
at the DC/AC disconnect switch on each unit.
For example, connect PV1 positive (+) and PV1 negative (–) to inverter 1 and PV2
positive (+) and PV2 negative (–) to inverter 2.
Do not connect PV1 positive (+) and PV2 negative (–) to inverter 1 and PV2 positive (+)
and PV1 negative (–) to inverter 2. See Figure 3-6.
+
+
–
–
PV Array #1 (PV1)
PV Array #2 (PV2)
GT Inverter #2
GT Inverter #1
Grounding not shown.
Figure 3-8 Improper Multiple Inverter Connections
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Wiring the Inverter
Connecting the AC Wiring
WARNING: Shock hazard
Before wiring the GT Inverter, ensure the main breaker in the primary utility breaker box
is switched OFF. Switch this breaker ON only after all wiring is completed as instructed in
the procedures.
The GT Inverter can be connected to a single bi-directional meter, or to dual
meters, where one meter indicates power used and the second meter indicates
power sold (power supplied back to the utility). Consult the local utility to
determine the proper components to install, and obtain any permits required prior
to installation.
Ensure all connections are correctly wired and properly torqued to a maximum
16 in-lb (1.8 Nm).
The AC wiring procedure is illustrated in Figure 3-9.
Important: The neutral conductor must be attached to the inverter in all cases. The
neutral conductor is used for phase-to-neutral voltage sensing only and is not a current
carrying conductor. This conductor is not bonded to ground in the inverter.
Utility Meter
L2
L1
Neutral
L1
L2
L1 L2
N
G
Ground
Grounding not shown
Main Service Utility Panel
Figure 3-9 AC Connections from GT Inverter to Utility Service Panel
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DC and AC Wiring for Multiple Inverters
DC and AC Wiring for Multiple Inverters
DC and AC wiring for multiple inverters is illustrated in Figure 3-10.
If there will be more than one PV array, label the positive and negative wire pairs
appropriately (for example: PV1 POS, PV1 NEG, PV1 GND, PV2 POS, etc.).
If required by the AHJ, a DC grounding conductor may be connected to each
inverter’s ground bar. One inverter will connect to a common grounding
conductor. The other inverters will use tap connectors. Connection is then made to
the DC or AC grounding electrode as per NEC 690.47.
Ensure all connections are correctly wired and properly torqued to a maximum
16 in-lb (1.8 Nm).
PV Array #2 (PV2)
+
+
–
–
PV Array #1 (PV1)
Utility Meter
L1 L2
N G
L2
L1
Neutral
L1
L2
L1
L2
Ground
Main Utility Service Panel
Grounding not shown.
L1 L2
N G
Figure 3-10 DC and AC Wiring With Multiple GT Inverters
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Wiring the Inverter
Communications Wiring for Multiple Inverters
Communications wiring between multiple GT Inverters allows information about
each inverter and its associated PV array to be communicated between all of the
inverters in the system. Information about the entire system can be displayed on
any inverter LCD in the system.
For example, in a two-inverter system, if inverter #1 is producing 1500 W and
inverter #2 is producing 2000 W, both inverters display a total system power of
3500 W. The cumulative energy produced by both inverters that day is also
displayed.
You can still view information for an individual inverter in a system. See “To view
unit-specific screens in a multiple unit system:” on page 5–5.
Without communications wiring (network cables) each inverter in a system will
only display information pertinent to the unit and its associated PV array.
Xanbus Network Technology
GT Inverters use Xanbus technology to communicate with other GT Inverters.
Network connections for multiple inverters are laid out in a “daisy chain” pattern,
each device on the network linked together with separate lengths of cable, as
shown in Figure 3-11.
Network terminator
Network terminator
Xanbus cable
Figure 3-11 Daisy Chain Layout
CAUTION: Equipment damage
Connect only Xanbus-enabled devices.
Although the cabling and connectors used in this network system are the same as ethernet
connectors, this network is not an ethernet system. Equipment damage may result from
attempting to connect Xanbus to different systems.
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Communications Wiring for Multiple Inverters
Terminators
The male network terminator supplied with each GT Inverter (Figure 3-12) is
required at each end of the network to ensure the communication signal quality on
the network.
Figure 3-12 Male Network Terminator
GT Inverter Xanbus
Ports
Two RJ45 ports are provided in the GT Inverter, accessible from the wiring box.
See Figure 3-13 for the location of these ports.
RJ11 ports
(not used)
RJ45
Xanbus ports
RS-232 port (used to connect a PC to use GT-View.
See page 3–15 and page 5–10)
Male network terminator
Figure 3-13 Xanbus RJ45 Ports in the GT Inverter Wiring Box
Cabling Requirements
CAUTION: Equipment damage
Do not use crossover cable in a Xanbus system.
The network uses Category 5 (CAT 5 or CAT5e) cable, a standard cable available
from any computer supply store. The cable consists of eight conductors in four
twisted pairs with an RJ45 modular connector wired to the T568A standard.
Table 3-2 contains the arrangements of wire colors to pin numbers for the T568A
standard.
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Wiring the Inverter
Table 3-2 T568A Standard Wiring
CAT 5 Cable
Pin Number Conductor Name Insulation Color
CAT 5e Cable
Insulation Color
1
2
3
4
5
6
7
8
NET_S
NET_S
NET_C
CAN_L
CAN_H
NET_C
NET_S
NET_C
White/Green
Green
White/Orange
Orange
White/Orange
Blue
White/Green
Blue
White/Blue
Orange
White/Blue
Green
White/Brown
Brown
White/Brown
Brown
Pins:
8 7 6 5 4 3 2 1
Figure 3-14 RJ45 Connector
Purchasing Network Components
Consult your system designer to determine what network components will be
needed for your specific installation. Table 3-3 provides a partial list of network
components and part numbers. Pre-made cables are available in standard lengths
from 3 feet to 75 feet.
Table 3-3 Network Components and Part Numbers
Network Component
Part Number
809-0901
809-0935
809-0936
809-0937
809-0938
809-0939
809-0940
809-0941
809-0942
Network termination — Male (2 per pack)
Network cable 3 ft. (0.9 m)
Network cable 5 feet (1.5 m)
Network cable 7 feet (2.0 m)
Network cable 10 feet (3.0 m)
Network cable 14 feet (4.3 m)
Network cable 25 feet (7.6 m)
Network cable 50 feet (15.2 m)
Network cable 75 feet (22.9 m)
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Communications Wiring for Multiple Inverters
Guidelines for Routing the Network Cables
WARNING: Shock hazard
Do not route the network cables in the same conduit or panel as the AC and DC power
cabling. The cables should run on top of the insulation barrier inside the wiring/disconnect
box and out the side conduit hole, avoiding any contact with the AC and DC wiring.
:
CAUTION: Unpredictable device behavior
Do not connect one end of the network to the other to make a ring or loop.
Connecting Network Cable Between Multiple Inverters
The following procedure is illustrated in Figure 3-11. The procedure assumes only
two inverters are connected. However, there can be up to ten inverters wired in
this configuration.
WARNING: Shock hazard
Before opening the GT Inverter wiring/disconnect box, turn OFF the breaker switches
connected to the GT Inverter AC output, and turn the DC/AC Disconnect switch to the
OFF position. Hazardous voltage will still be present on the DC input (PV) terminals
located under the clear plastic insulation barrier. Do not remove the insulation barrier
during this procedure. To reduce the risk of shock, cover the array with an opaque (dark)
material.
To provide communication between multiple inverters:
1. Remove the wiring/disconnect box cover from each unit.
2. Connect the network cable to any RJ45 port in Inverter #1.
3. Route the cable along the top of the insulation barrier and through a side
conduit hole to Inverter #2.
4. Connect the network cable to any RJ45 port in Inverter #2.
5. For more than two inverters, continue connecting cable as described above.
6. Insert male network terminators into the empty RJ45 ports in the inverters at
the beginning and end of the network. There should be no empty RJ45 ports in
any of the inverters.
Communications Wiring for Monitoring a Single Inverter
You can view GT Inverter operational data on a personal computer using the
Xantrex GT Solar Inverter Viewer (“GT-View”), which you can download free of
To use GT-View, you must connect your computer’s serial port to the GT Inverter
RS-232 port (see Figure 3-13).
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Wiring the Inverter
RS-232 cable
requirements
To connect your computer to the GT Inverter, you must use a serial DB9 “straight
through” cable.
The RS-232 connector on the GT is configured as follows:
•
•
•
Pin 2: transmit
Pin 3: received
Pin 5: ground.
All other pins are unused.
To connect a single GT Inverter to a personal computer:
WARNING: Shock hazard
Before opening the GT Inverter wiring/disconnect box, turn OFF the breaker switches
connected to the GT Inverter AC output, and turn the DC/AC Disconnect switch to the
OFF position. Hazardous voltage will still be present on the DC input (PV) terminals
located under the clear plastic insulation barrier. Do not remove the insulation barrier
during this procedure. To reduce the risk of shock, cover the array with an opaque (dark)
material.
1. Feed the male end of the serial cable through a side conduit hole on the GT
Inverter.
If the end of the serial cable is too large to fit through the conduit hole, you
may need to use two DB9 to CAT 5 adaptors. Plug the DB9 end of the adapter
into the GT Inverter, and feed the CAT 5 end of the cable out the conduit hole.
Use another adapter to convert the CAT 5 end of the cable back to DB9.
2. Plug the male end of the serial cable into the GT Inverter RS-232 port.
3. Plug the female end of the serial cable into your computer’s serial port.
4. Replace the wiring/disconnect box cover.
5. Turn the DC/AC disconnect switch to the ON position and turn the main
utility panel breaker switches ON.
When power is restored to the GT Inverter, you can run GT-View on your
computer to monitor the inverter’s operation.
Note: In multiple installations, GT-View monitors only the inverter to which the
computer is connected. However, if the inverters are connected with a Xanbus network
cable, GT-View will display total system wattage and the accumulated daily energy
produced by all inverters. To monitor multiple inverters, you require multiple DB9 cable
connections (one per inverter) to your computer.
For more information about GT-View, see the GT-View User Manual, included
with the GT-View software.
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Starting the Inverter
4
Chapter 4 contains information on starting up the Xantrex Grid Tie Solar
Inverter and performing a functional test.
The topics in this chapter are organized as follows:
•
•
•
“Startup Procedure” on page 4–1
“Commissioning Multiple Inverters” on page 4–3
“Disconnect Test” on page 4–5
Startup Procedure
Starting up the GT Inverter requires several steps. You will need to:
1. Ensure the DC/AC Disconnect switch is in the OFF position (see Figure 4-1).
2. Check the PV array DC voltage (see procedure below).
3. Check the AC utility voltage (see procedure below).
4. Replace the cover on the wiring box (see “Replacing the Wiring/Disconnect
Box Cover” on page 4–2).
5. Start up the GT Inverter by switching the DC/AC Disconnect switch ON.
WARNING: Shock hazard
Hazardous voltages are present from two sources. Use extreme caution during startup
procedure. Before applying power to the GT Inverter, ensure all AC and DC wiring is
correct.
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Starting the Inverter
Checking the PV Array DC Voltage
To check the PV array DC voltage:
1. Uncover the PV arrays and expose them to full sunlight. The sunlight must be
intense enough to produce the required output voltage.
2. Measure the PV array open circuit DC voltage across the DC positive (+) and
negative (–) terminals. This voltage must be greater than 150 volts DC (to
energize the electronics) and less than 600 volts DC (to prevent damage to the
inverter).
Checking the AC Utility Voltage
To check the AC utility voltage:
1. Switch on the main and inverter breakers in the main electrical service panel.
2. Using an AC voltmeter, measure the AC open circuit utility voltage between
L1 and L2. Ensure this voltage is at approximately the nominal value. The
inverter operates with a line-to-line voltage (L1 to L2) range around the
nominal value.
See “Electrical Specifications”, “Output” on page A–2 for the utility voltage
operating range for your GT Inverter model.
Replacing the Wiring/Disconnect Box Cover
After performing the voltage checks, replace all covers that were removed during
installation and startup.
WARNING: Shock hazard
Before reattaching covers, turn OFF the breaker switches in the main utility service panel
and the DC/AC Disconnect switch on the GT Inverter.
To replace the wiring/disconnect box cover:
1. Ensure the clear plastic insulating barrier is properly positioned in the wiring
box.
2. Place the cover in position on the wiring box, being careful not to pinch any
wires inside.
3. Ensure that the two screw holes in the bottom of the wiring box cover are
aligned with the corresponding holes in the bottom of the wiring box.
4. Replace the two screws removed when the cover was removed (see
“Accessing the Wiring Terminals” on page 3–5), and tighten securely.
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Commissioning Multiple Inverters
Starting up the GT Inverter
To start up the inverter:
1. Switch the DC/AC disconnect switch to the ON position (see Figure 4-1).
2. Check the GT Inverter LCD. The startup screens (see Table 5-1 on page 5–2)
should appear for five seconds each, and then the “Reconnecting in sss
seconds” special screen (see Table 5-10 on page 5–10) will appear until the
305 second (default value) protection timer countdown is completed.
DC/AC disconnect switch
Figure 4-1 DC/AC Disconnect Switch Positions
Commissioning Multiple Inverters
In an installation with multiple GT Inverters, special commissioning procedures
must be followed in order to safely determine if any DC wiring problems exist.
Important: Before performing this procedure, all inverters should be off, with the
DC/AC disconnect switch in the OFF position.
To commission multiple inverters:
1. Uncover the PV arrays and/or close the main DC disconnect switch, if one is
installed.
2. Start the first inverter by turning the DC/AC disconnect switch to the ON
position.
3. Wait for the input current to rise above 1 A.
This information is displayed on the Array Readings screen. To display the
Array Readings screen, tap the unit four times.
4. After the input current has risen above 1 A, if the inverter is still operating
normally, switch off the inverter by turning the DC/AC disconnect switch to
the OFF position. Proceed to step 5.
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Starting the Inverter
If the inverter stops operating after the input current has risen above 1 A, turn
the unit off, remove DC power, and have a certified electrician or technician
inspect the ground fault protection fuse. If the fuse has blown, a DC wiring
problem may exist. Check all DC wiring to ensure that the unit is connected to
a single PV array.
5. Proceed to the next inverter and perform the same test. See Figure 4-2 for an
example of the recommended commissioning sequence.
1
2
3
Figure 4-2 Commissioning Sequence for Multiple Inverters
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Disconnect Test
Disconnect Test
The disconnect test is designed to verify correct operation of the GT Inverter both
on initial operation and periodically through its life as required by the utilities.
This test ensures that the Xantrex Grid Tie Solar Inverter does not send electricity
to the utility grid when the local utility has shut off the grid for repairs, or when
the utility wiring is damaged.
When operation of the inverter has been verified and the unit is producing power,
run the disconnect test as described in this procedure.
To run the disconnect test:
1. Switch off the AC circuit for the inverter. This can be accomplished by
switching the breaker on the main panel that feeds the inverter(s). The
disconnect for the home or business may be used as well.
2. Have someone watch the front panel of the inverter to ensure the green light
on the front of the inverter goes out within two seconds.
The green light goes out when the AC circuit is switched off, disconnecting
the inverter from the AC grid. The front panel display will show an AC Fault
display, indicating that the AC is out of the operating range.
3. Switch on the AC circuit for the inverter.
The inverter responds by starting its 305 second protection timer. Ensure that
the inverter does not produce power before the countdown is over. After
completing the countdown, the green light turns on and the inverter begins
delivering power. The display returns to showing the power being produced
and the total kWh produced to date.
Important: The default voltage, frequency and reconnect delay values are programmed
into the unit at the time of shipment from the factory. With the utility’s approval, these
settings can be adjusted in the field using the GTConfigLite software tool. See
“Adjustable Voltage, Frequency and Reconnection Settings” on page A–3.
4. If you have another GT Inverter to commission, switch off the AC circuit for
the inverter you have just commissioned and tested by switching off the
breaker on the main panel. You can then run the commissioning procedure
and disconnect test on the next inverter.
Locating the Firmware Version Number
The firmware version number for the protection processor is visible on a screen
that appears when the unit starts up or is powered up after switching the DC/AC
disconnect switch to “on.” The screen reads:
Flash = 03.00
ROM = 03.00
The number appearing after “ROM” is the firmware version number for the
protection processor.
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Monitoring the
Inverter
5
Chapter 5 contains information for understanding the LCD screens and the
LED indicators.
Monitoring the Front Panel Display
During startup
During startup, the inverter’s front panel LCD (see Figure 5-1) shows the screens
described in Table 5-1, “Startup Screens on GT Inverter Front Panel Display” on
page 5–2.
During waiting
period
When the 305 second protection timer begins, the inverter displays “Reconnecting
in sss seconds” (see Table 5-10, “Special Message Screens” on page 5–10).
During operation
When the protection timer stops, the GT Inverter begins delivering power,
indicated by the power output reading in the display (see Table 5-2, “Normal
Operation Default Screen” on page 5–4).
When the inverter is
offline or there is
fault condition
When the GT Inverter is offline (at night, for example) or a fault condition has
been detected, the LCD shows a message screen to indicate that the inverter is
offline and to identify the specific fault condition. See Table 5-5, “Offline Mode
Default Display” on page 5–6 and Table 5-8, “Fault Message Screens” on page
5–8.
Tap Xantrex logo for
Grid Tie Solar Inverter
backlight and status
screens
Figure 5-1 Front Panel LCD
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Monitoring the Inverter
Viewing more
information
Additional screens of information about the performance of the GT Inverter can be
displayed by tapping the Xantrex logo on the inverter front panel. This causes the
LCD to cycle through a series of information screens in Normal Operation,
Offline or Fault modes. These are described in detail in the following section,
“Front Panel Display Screens and What They Mean”.
Front Panel Display Screens and What They Mean
The front panel display shows different message screens during different modes of
operation (Startup, Normal, Offline, and Fault). All single units display a basic set
of message screens; multiple unit systems display additional screens in Normal
Operation and Offline modes.
In addition there are Special message screens that may appear in any operational
mode. All these message screens are described in more detail in the following
tables.
Startup Mode
During startup, the GT Inverter displays several message screens on its front panel
LCD. These screens appear in the following order (Table 5-1).
Table 5-1 Startup Screens on GT Inverter Front Panel Display
Display
Duration
Description
Power 5000W
5 seconds Startup message 1: Maximum output power and
Region NA-240V
Region-nominal output voltage
Flash = 03.00
..ROM = 03.00
5 seconds Startup message 2: Model and revision numbers
for Flash and ROM memory on the GT Inverter.
The ROM revision number applies to the
protection processor.
Vh=
261V
3 seconds Vh: phase-to-phase (rms) high threshold voltage
setting, the threshold at which the inverter
disconnects itself from the power grid when
abnormally high phase-to-phase AC voltage is
detected.*
Clr t < 1.00s
Clr t: clear time.†
Vl=
214V
3 seconds Vl: phase-to-phase (rms) low threshold voltage
setting, the threshold at which the inverter
disconnects itself from the power grid when
abnormally low phase-to-phase AC voltage is
detected.
Clr t < 2.00s
Clr t: clear time.
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Front Panel Display Screens and What They Mean
Table 5-1 Startup Screens on GT Inverter Front Panel Display
Display
Vph= 130V
Duration
Description
3 seconds Vph: phase-to-neutral (rms) high threshold
voltage setting, the threshold at which the inverter
disconnects itself from the power grid when
abnormally high phase-to-neutral AC voltage is
detected.
Clr t < 1.00s
Clr t: clear time.
Vpl=
Clr t < 2.00s
107V
3 seconds Vpl: phase-to-neutral (rms) low threshold voltage
setting, the threshold at which the inverter
disconnects itself from the power grid when
abnormally low phase-to-neutral AC voltage is
detected.
Clr t: clear time.
Fh= 60.4Hz
Clr t < 0.16s
3 seconds Fh: frequency high threshold setting, the threshold
at which the inverter disconnects itself from the
power grid when abnormally high frequency is
detected.
Clr t: clear time.
Fl= 59.4Hz
Clr t < 0.16s
3 seconds Fl: frequency low threshold setting, the threshold
at which the inverter disconnects itself from the
power grid when abnormally low frequency is
detected.
Clr t: clear time.
Reconnect Delay 3 seconds Setting for the reconnect delay for the protection
305.00s
timer. After a fault clears for the specified clear
time, the protection timer starts counting down
before the inverter attempts to deliver power to the
grid.
* The voltage and frequency thresholds, clear times and reconnect delay in
Table 5-1 can be adjusted for multi-unit installations producing 30 kW or more
(with the permission of the local utility) using GTConfigLite software.
† The clear time is the total time to disconnect the output from the grid. It is the
sum of the debounce time and the hardware delay time. The debounce time is
the protection processor waiting time before it declares a fault. This delay is
necessary to avoid nuisance trips. The hardware delay time (100 ms maximum)
is the time taken by the hardware to disconnect the output from the grid after a
fault has been declared.
The protection timer begins counting down the reconnect delay during startup and
the “Reconnecting in sss seconds” screen appears until the timer countdown is
complete.
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Monitoring the Inverter
Normal Operation Mode
The LCD on the GT Inverter is refreshed every two seconds, so all readings are
current to within two seconds. There is a default display available at all times, and
a series of additional screens that can be displayed by tapping the Xantrex logo
near the LCD to change the display.
Normal Operation
default display
After the protection timer has completed its countdown and during normal
operation, the GT Inverter displays the normal operation message screen shown in
Table 5-2.
Table 5-2 Normal Operation Default Screen
Display*
Description
System 2000W
Power being produced by the system now.
Today 9.875kWh Cumulative energy produced by the system today.
* all numbers in this and following tables are examples only.
If there is sufficient energy from the PV array, the default screen is displayed
continuously while the system is operating normally. In a multiple unit system
with communications cables properly connected, the power and cumulative
energy values displayed are for the entire system.
During low light conditions when the GT Inverter cannot produce any power, the
Normal Operation default screen flashes alternately (every two seconds) with the
Insufficient Solar Energy screen (see Table 5-10, “Special Message Screens” on
page 5–10).
More screens for all
systems
Besides the default normal operation display, more system information messages
can be viewed.
To view more Normal Operation information:
•
Tap the Xantrex logo near the LCD to advance the display to the next screen.
Normal operation screens shown in Table 5-3 are displayed in the order given,
as you tap successively on the unit. They are common to all GT Inverter
systems, no matter how many units are installed.
If you continue to tap the unit, then the LCD continues to cycle through all of the
available normal operation screens. Each screen is displayed for a maximum of
30 seconds. If you do not tap again during that time period, then the LCD
backlight turns off and the display reverts to the default system message screen.
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Front Panel Display Screens and What They Mean
Table 5-3 Normal Operation Screens for All GT Inverter Units
Tap
Display*
Description
1st time
System 2000W
LCD backlight turns on for better readability
Today 2.500kWh and default Normal Operation screen is
displayed.
2nd time System Lifetime Lifetime energy produced by the GT Inverter
305kWh
system.
3rd time
Time Online
Length of time inverter has been online today, in
Today hh:mm:ss hours (hh), minutes (mm) and seconds (ss).
4th time Array Readings Immediate DC voltage and current readings
350.5V 8.4A
Grid Readings
from the PV array.
5th time
Immediate AC voltage and frequency readings
242.6V 60.0Hz from the Grid
* In a multiple unit system with network cables properly installed, the system
values displayed are for the entire system. For example, in a two-inverter
system, if inverter #1 is producing 1500 W and inverter #2 is producing
2000 W, both inverters display a total system power of 3500 W. Time online
and array readings are for the local inverter and PV array associated with that
inverter.
Additional screens
for multiple units
In addition to the normal system message screens, additional screens specific to
each GT Inverter unit can be displayed when the unit is networked to other GT
Inverters. These screens are only available on multiple unit systems.
To view unit-specific screens in a multiple unit system:
1. Tap the Xantrex logo near the LCD to advance the display to the next screen.
Continue tapping until the final system message screen (“Grid Readings”, in
Table 5-3 above) is displayed.
2. Tap again. Normal operation screens shown in Table 5-4 are displayed in the
order given, as you tap successively on the unit.
If you continue to tap the unit, then the LCD will cycle through all of the available
normal operation screens. Each message is displayed for up to 30 seconds. If you
do not tap again within that time period, then the LCD backlight turns off and the
display reverts to the default normal operation screen (Table 5-2).
Table 5-4 Additional Normal Operation Screens for Each GT Inverter Unit in a
Multiple Unit System
Tap
Display
Description
6th time
Unit 1500W
Power being produced by this unit now.
Today 1.250kWh Cumulative energy produced by this unit today.
7th time Unit Lifetime
Lifetime energy produced by this GT Inverter unit
150kWh
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Monitoring the Inverter
Offline Mode
Offline default
display
At night and when no power is being produced by the PV array (offline mode), the
GT Inverter displays the screen shown in Table 5-5.
Table 5-5 Offline Mode Default Display
Display
Description
Inverter
Offline
Displayed at all times while the system is offline.
Offline messages
for all systems
Additional message screens can be viewed when the system is offline by tapping
the Xantrex logo near the LCD. Each additional tap displays the next screen, in
the order shown in Table 5-6.
These message screens are common to all GT Inverter systems, no matter how
many units are installed. If you continue to tap the unit, then the LCD will
continue to cycle through all of the available offline mode screens.
Table 5-6 Offline Mode Screens for All GT Inverter Units
Tap
Display*
Description
1st time
Inverter
Offline
LCD back light turns on for better readability
and default Offline Mode screen is displayed.
2nd time
System 0W
Today 2.50kWh
Power being produced by the system now.
Cumulative energy produced by the system
today.
3rd time System Lifetime Lifetime energy produced by the system.
305kWh
4th time
Time Online
hh:mm:ss
Total time that the system was online today, in
hours (hh), minutes (mm) and seconds (ss).
* In a multiple unit system with communications cables properly installed, the
system values displayed are for the entire system. Time online is for the local
inverter.
Additional Offline
messages for
multiple unit
systems
Multiple unit systems in offline mode display all of the message screens shown in
Table 5-6, plus the additional screens shown in Table 5-7. These additional
screens are displayed following the “Time Online” screen.
These screens are only displayed on multiple unit GT Inverter systems with
communications cables installed. If you continue to tap the unit, then the LCD
continues to cycle through all of the available offline mode screens.
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Front Panel Display Screens and What They Mean
Table 5-7 Additional Offline Mode Screens for Each GT Inverter Unit in a
Multiple Unit System
Tap
Display
Description
5th time
Unit 0W
Power being produced by this unit now.
Today 1.25kWh
Cumulative energy produced by this unit today.
6th time
Unit Lifetime
150kWh
Lifetime energy produced by this unit.
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Monitoring the Inverter
Fault Mode
When a fault state is detected, the appropriate fault message appears on the front
panel display at the next screen refresh (within 2 seconds). The GT Inverter fault
message screens are shown in Table 5-8.
Fault Mode causes
These message screens only appear when there is a fault, and then flash
alternately with the Inverter Offline default screen (Table 5-5) until the fault is
corrected.
Table 5-8 Fault Message Screens
Display
Appears When...
DC Voltage Fault The actual DC voltage is over or under the allowable range,
145.5V
240 to 600 Vdc. Self-clearing, no action required.
The PV array should be configured such that DC voltage
does not fall below 240 Vdc or rise above 600 Vdc.*
AC Voltage Fault The actual AC voltage is over or under the allowable range,
280V
as specified in “Output” on page A–2.
This is a utility fault; it will clear itself when the AC voltage
comes within the specified range.†
Frequency Fault The actual Frequency is over or under the allowable range, as
0.0Hz
specified in “Output” on page A–2. This is a utility fault; it
will clear itself when the frequency comes within the
specified range.†
Over Temp Fault The unit’s internal temperature is greater than 80° C
81.4C 178.5F
(176° F), the unit will shut down automatically and only
restart when the temperature has dropped to less than 70° C
(158° F).
Neutral Loss
Detected
The GT Inverter is configured for North America, and the
phase-to-neutral voltage is outside the allowable range.
Either this is a utility fault or a phase-to-neutral line is not
connected properly.
Ground Fault
Reset System
A grounding fault is detected. The ground fault fuse will be
blown. The system must be shut down completely, the fault
corrected, the fuse replaced (see “Replacing the Ground
Fault Protection Fuse” on page 6–4) and then the system
restarted. Troubleshooting a grounding fault should be
performed by qualified personnel, such as a certified
electrician or technician.
Unit Shutdown
via Remote
The GT Inverter unit has been shut down via a computer
connected to the RS-232 port.
Protection uP
Not Responding
The protection microprocessor is not responding.
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Front Panel Display Screens and What They Mean
* It is normal to receive this fault during low light conditions at dawn or dusk. At
such times, the array does not have sufficient energy to power the inverter, so
the PV voltage drops below 240 volts occasionally.
† Grid fault. When this fault is cleared the protection timer will begin its
countdown and you will see the “Reconnecting in sss seconds” and “Inverter
Offline” special screens (see Table 5-10) flashing alternately until the
countdown is complete.
Additional Fault
messages for all
systems
Additional message screens can be viewed in fault mode by tapping the Xantrex
logo near the LCD. Each additional tap displays the next screen in the order
shown in Table 5-9.
Table 5-9 Additional Fault Mode Screens
Tap
Display*
Description
1st time
Current fault message LCD backlight turns on for better readability.
screen (see Table 5-8)
2nd time
System 0W
Energy being produced by the system now.
Today 2.500kWh Cumulative energy produced by the system
today.
3rd time System Lifetime Lifetime energy produced by the GT Inverter
305kWh
system.
4th time
Time Online
Length of time inverter was online today, in
Today hh:mm:ss hours (hh), minutes (mm) and seconds (ss).
5th time Array Readings Immediate DC voltage and current readings of
350.5V 8.4A
Grid Readings
power from the PV array.
6th time
Immediate AC voltage and frequency readings
242.6V 60.0Hz of power from the grid.
* In a multiple unit system with network cables installed, the system values
displayed are for the entire system. Time online and array readings are for the
local inverter and PV array associated with that inverter.
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Monitoring the Inverter
Special Screens
Special message screens are displayed in specific situations that are not
considered fault situations. They can appear in any mode of operation. These
screens are described in Table 5-10.
Table 5-10 Special Message Screens
Display
Description
Reconnecting in Time remaining in seconds (sss) before the GT Inverter
sss seconds
reconnects to the grid. This is a protection timer; it runs for
approximately five minutes at startup and after any grid fault.
Inverter
Offline
GT Inverter switching (or has switched) from Normal
Operation to Offline mode. This screen may flash alternately
with a Fault message screen.
System *3500W
The “*” in these two screens (see Table 5-2 and Table 5-4)
Today 15.56kWh indicates that the unit is derating its output power because the
inverter heat sink temperature is above 75° C (167° F).
Unit *1800W
Today 7.82kWh
The asterisk only appears when the power is actually being
limited by the inverter.
Insufficient
Solar Energy
Indicates the GT Inverter is not producing power due to
insufficient solar energy during low light conditions in early
morning or late afternoon or when the PV array is in shade.
This screen flashes alternately with the Normal Operation
default screen.
Custom Screens
Two custom screens are available. The inverter does not display them unless they
are configured using GT-View (see page 3–15). If programmed, the custom
screens display as the fourth and fifth screens during the startup sequence. They
can also be viewed by tapping the unit during normal operation and fault mode.
The first custom screen is intended for the home owner to display information
such as the name or location of the PV array associated with the inverter.
The second custom screen is intended for installers, who can configure the screen
to display, for example, contact information for service.
5–10
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Status Indicator Lights
Status Indicator Lights
The GT Inverter has two status indicator lights (LEDs) located below the front
panel LCD (Figure 5-2). These LEDs indicate the inverter’s status (Table 5-11)
and assist in troubleshooting the performance of the unit.
Only one indicator light will be lit at any time.
Table 5-11 Status Indicator LEDs
LED on
Means
GREEN
GT Inverter is on (DC voltage and AC voltage are qualified and the
protection timer has finished) and delivering power. No action
required. Turns off when a fault state is detected.
RED
Ground fault condition detected.
Check for any fault messages on the display (see Table 5-8), and refer
also to Table 6-1, “Troubleshooting the GT Inverter” on page 6–9 to
resolve the fault condition.
Green LED
Red LED
Grid Tie Solar Inverter
Figure 5-2 Status Indicator Lights
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Maintenance and
Troubleshooting
6
Chapter 6 contains information about how to provide general maintenance
for the Xantrex Grid Tie Solar Inverter. It also provides information about
troubleshooting the unit.
The topics in this chapter are organized as follows:
•
•
•
•
“Factors Affecting GT Inverter Performance” on page 6–1
“Performing General Maintenance” on page 6–3
“Replacing Parts” on page 6–3
“Identifying Error/Fault Conditions and Solutions” on page 6–9.
Factors Affecting GT Inverter Performance
This section describes several factors that will affect the amount of power that a
properly installed and operating GT Inverter can produce.
PV Array Factors
PV array ratings
PV arrays are rated at ideal factory conditions, such as specified illumination
(1000 W/m2), spectrum of the light and specified temperature (25 °C / 77 °F),
which seldom reflect real-world installations. This is called the STC (Standard
Test Condition) rating and is the figure that appears on the PV module nameplate
label.
Expected
performance
Because of several unavoidable environmental factors, you can expect your
PVarray to produce around 60% to 70% of its peak STC-rated output for a
properly designed and installed PV system on a typical day.
Temperature and
reduced output
PV array temperature affects the output of the entire system. As the temperature
on the array surface heats up, its energy output goes down. Roof-mounted arrays
also collect the heat generated by the roof surface (or trapped under the array) and
will produce less output than pole-mounted arrays, which allow greater air
circulation behind the panels.
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Maintenance and Troubleshooting
Important: The GT Inverter will reduce its energy output to protect its electronic
circuits from overheating and possible damage in high heat conditions. For maximum
output in hot climates, mount the GT Inverter in a shaded location with good air flow.
Angle of the sun
The angle of the sun in relation to the PV array surface—the array
orientation—can dramatically affect the PV array output. The array energy output
will vary depending on the time of day and time of year as the sun’s angle in
relation to the array changes. Sunlight output decreases as the sun approaches the
horizons (such as in winter in North America) due to the greater atmospheric air
mass it must penetrate, reducing both the light intensity that strikes the array’s
surface and spectrum of the light. In general, you can expect only four to six hours
of direct sunlight per day.
Partial shade
Shading of only a single module of the array will reduce the output of the entire
system. Such shading can be caused by something as simple as the shadow of a
utility wire or tree branch on part of the array’s surface. This condition, in effect,
acts like a weak battery in a flashlight, reducing the total output, even though the
other batteries are good. However, the output loss is not proportionate to shading.
The GT Inverter is designed to maximize its energy production in all of the above
situations using its MPPT algorithm.
Other Factors
Other factors that contribute to system losses are:
•
•
•
Dust or dirt on the array
Fog or smog
Mismatched PV array modules, with slight inconsistencies in performance
from one module to another.
•
•
•
Inverter efficiency
Wire losses
Utility grid voltage.
For additional information and technical notes concerning PV array performance,
6–2
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Performing General Maintenance
Performing General Maintenance
Follow these simple routines to ensure many years of service and optimal
performance of your solar energy system.
1. Keep the heat sink clear of dust and debris.
WARNING: Shock and fire hazard
Do not use a pressure washer to clean the GT Inverter, or use other cleaning methods that
could allow water to enter the unit.
2. Clean the PV array, during the cool part of the day, whenever it is visibly
dirty.
3. Periodically inspect the system to make sure that all wiring and supports are
securely in place.
4. On a sunny day near noon on March 21 and September 21 of each year,
review the output of the system and compare with previous year’s reading.
Maintain a log of system performance readings so that you can recognize
when system performance becomes inconsistent.
Replacing Parts
WARNING: Shock hazard
There are no user-replaceable parts on the GT Inverter. Do not attempt to service the unit
yourself.
See the “Warranty and Return Information” on page WA–1 for information on
how to get service for your GT Inverter.
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Maintenance and Troubleshooting
Replacing the Ground Fault Protection Fuse
WARNING: Shock and fire hazard
Fuses should only be replaced by qualified service personnel, such as a certified
electrician or technician. For continued protection against risk of fire, replace only with
same type and ratings of fuse.
WARNING: Shock hazard
After disconnecting both AC and DC power from the GT Inverter, wait five minutes
before attempting any maintenance or cleaning or working on any circuits connected to
the inverter. Internal capacitors remain charged for five minutes after disconnecting all
sources of power.
WARNING: Shock hazard
•
Dangerous voltages can exist inside the inverter. If there is leakage current from the
ungrounded conductor to ground at the array, touching the grounded lead could cause a
life-threatening shock even with the disconnect switch turned off. Ungrounded DC
current within the inverter presents an extreme shock hazard.
•
•
Cover PV arrays with an opaque material during this procedure.
When the fuse has blown due to a fault, incorrect handling can be life-threatening. Use
an insulated fuse puller.
The ground fault protection fuse will blow when severe leakage occurs between
the PV array and earth ground, or when the system has been installed with faulty
wiring. Before replacing the fuse, it is important to have qualified service
personnel, such as a certified electrician or technician, determine the cause of the
ground fault.
To replace a ground fault protection fuse:
1. Remove the wiring/disconnect box cover, as described on page 3–5.
2. Remove the display front panel cover (see Figure 6-2), located below the heat
sink. Use a Phillips screwdriver to remove the two external panhead screws
and washers and the two screws along the bottom edge of the cover.
The ground fault protection fuse is located to the left side of the LCD panel
(see Figure 6-1), and to the left of the DC interconnect board for positive
grounded units (marked with the “-POS” suffix).
3. Using an insulated fuse puller, remove the blown fuse and replace it with a
new AC/DC midget cartridge, rated 600 Vdc, 1A (Littelfuse KLKD 1 or
equivalent).
4. Replace the display front panel cover and tighten all four screws securely.
5. Replace the wiring/disconnect box cover.
6–4
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Replacing Parts
Ground Fault Protection
Fuse (“-POS” models)
Ground Fault
Protection Fuse
LCD
Figure 6-1 Location of Fuse, Front Panel Cover Removed
Figure 6-2 Display Front Panel Assembly
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Maintenance and Troubleshooting
Replacing the Inverter
If your GT Inverter requires servicing, you can replace it with another inverter,
leaving the existing wiring box in place. This means that you do not have to
disturb wiring connections in the wiring/disconnect box. However, you do have to
disconnect wiring between the inverter and the wiring/disconnect box.
WARNING: Shock hazard
•
Replacing the inverter according to these procedures should only be performed by
qualified service personnel, such as a certified electrician or technician.
Separating the inverter from the wiring box breaks the ground path between the
grounded conductor and earth ground. When the wires between the inverter and wiring
box are disconnected and exposed, both PV leads are floating at the array open circuit
voltage. If there is leakage current from the POSITIVE PV lead to ground at the array,
touching the NEGATIVE PV lead could cause a life-threatening shock even with the
disconnect switch turned off. Ungrounded DC current within the inverter presents an
extreme shock hazard.
•
•
•
Cover PV arrays with an opaque material during this procedure.
Use insulated tools only when disconnecting wires between the inverter and wiring
box. Cap all disconnected wires with wire nuts.
Recommended tools:
•
•
•
Insulated screwdriver
Wire nuts
7 mm socket and small ratchet, or 7 mm open wrench.
WARNING: Shock hazard
The inverter should only be removed from the wiring box when a replacement inverter is
immediately available. When replacing an inverter, ensure the DC/AC Disconnect switch
is locked (or otherwise secured) in the OFF position. Do not leave the top of the wiring
box exposed for extended periods of time.
i
WARNING: Shock hazard
Before replacing the inverter, turn OFF the breaker switches in the main utility service
panel and the DC/AC Disconnect switch on the GT Inverter. Cover the PV arrays with an
opaque material.
To remove the inverter from the wiring box:
1. Turn OFF the breaker switches in the main utility service panel and the
DC/AC Disconnect switch on the GT Inverter. Disable the output of the PV
arrays by covering them with an opaque material.
2. Remove the wiring/disconnect box cover and the display front panel cover
(see Figure 3-3 on page 3–5 and Figure 6-2 on page 6–5).
6–6
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Replacing Parts
3. Using an insulated screwdriver, disconnect the PV NEGATIVE (–) wire from
the terminal block inside the inverter. Cap the wire immediately with a wire
nut.
4. Disconnect the remaining AC, DC and network cables between the inverter
and the wiring box, inside the inverter. Cap all disconnected AC and DC wires
with wire nuts.
5. Inside the inverter, remove the four nuts attaching the wiring box to the
inverter. See Figure 6-3.
6. Push the connecting DC and AC wires down inside the wiring box.
7. Lift the inverter off the mounting bracket, leaving the wiring box in place.
8. Ensure the gasket on the wiring/disconnect box is clean and undamaged. The
gasket must create a water-tight seal between the inverter and
wiring/disconnect box.
Four nuts to
secure inverter
Gasket
Figure 6-3 Wiring/Disconnect Box and Removable Inverter
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Maintenance and Troubleshooting
Back view
Top mounting hook goes over
wall-mounted bracket
Lower flange goes behind
wiring/disconnect box
Wiring/ disconnect box
permanently mounted
to bracket
Figure 6-4 Inverter and Wiring/Disconnect Box Sections
To replace the inverter on the wiring box:
1. If it has not already been removed, remove the display front panel cover on
the inverter.
2. Mount the inverter on the upper mounting bracket above the
wiring/disconnect box, ensuring that the inverter’s lower flange goes behind
the wiring/disconnect box. See Figure 6-4.
3. Pull the connecting DC and AC wires back out of the wiring box and into the
inverter.
4. Replace the nuts that connect the inverter and the wiring/disconnect box.
Tighten each nut alternately to clamp the gasket between the inverter and
wiring/disconnect box. Secure all nuts tightly.
5. Remove the wire nut from the PV NEGATIVE (–) wire and reconnect it to the
terminal block inside the inverter.
6. Uncap the remaining DC and AC wires and reconnect them to the terminal
blocks inside the inverter.
7. Ensure all connections are correctly wired and properly torqued to a
maximum 16 in-lb (1.8 Nm).
8. Follow the startup procedure as described on page 4–1.
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Identifying Error/Fault Conditions and Solutions
Identifying Error/Fault Conditions and Solutions
Most error or fault conditions will be identified by fault message screens on the
GT Inverter front panel LCD. These are described in the “Fault Mode” section on
page 5–8 of this manual. Most of these fault conditions are self-correcting and
require no user action to remedy.
See “Front Panel Display Screens and What They Mean” on page 5–2 for more
information.
Table 6-1 is intended to assist in determining fault conditions that may require
user action to remedy.
Table 6-1 Troubleshooting the GT Inverter
Problem
Possible Cause
Solution
The inverter’s LEDs and display are DC/AC Disconnect Switch is off.
blank and the inverter does not
operate in sufficient sunlight.
Turn on DC/AC Disconnect Switch
and breakers in the sequence
described in “Startup Procedure” on
page 4–1.
The display reads “Inverter Offline” Utility service panel breakers are
Turn on utility panel breakers.
and “AC Voltage Fault.”
switched off.
AC grid voltage is not present or
incorrect.
Check AC connections at the
inverter’s terminals. Ensure AC
voltage within the range specified in
“Output” on page A–2 is present.
The display reads “Inverter Offline” DC breakers are switched off (if
Turn on any DC breakers and check
any DC fuses.
with sufficient sunlight.
installed), or external DC fuses are
blown (if installed).
DC array voltage is not present.
Check DC connections at the
inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays.
The display reads “Inverter Offline” DC voltage is present but incorrect. Check DC connections at the
and “DC Voltage Fault” with
sufficient sunlight.
inverter’s positive and negative DC
terminals. Check for incorrectly
wired PV arrays. Ensure a voltage
between 240 and 550 Vdc is present
at the inverter’s terminals.
Only the inverter RED LED is
illuminated and the display reads
“Ground Fault.”
Ground fault condition detected on
the PV array.
The PV system should be checked
by a qualified electrician and
repaired. See Table 5-8 on page 5–8.
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Specifications
A
Appendix A contains information about the specifications of the Xantrex
Grid Tie Solar Inverter.
The topics in this appendix are organized as follows:
•
•
•
•
•
•
•
“Electrical Specifications” on page A–2
“Output Power Versus Ambient Temperature” on page A–3
“Efficiency” on page A–4
“Environmental Specifications” on page A–4
“User Display” on page A–4
“Mechanical Specifications” on page A–5
“Regulatory Approvals” on page A–5
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Specifications
Electrical Specifications
Input
Input voltage, Maximum Power Point range
240 to 550 Vdc
Absolute maximum array open circuit voltage 600 Vdc
Maximum input current
22.0 Adc
Maximum array short circuit current
Reverse polarity protection
Ground fault protection
24 Adc
Short circuit diode
GF detection, I
> 1 A
DIF
Output
Maximum output power
5000 W AC
240 V
Nominal output voltage
Operating range, utility voltage*
Nominal output frequency
Operating range, utility frequency*
Startup current
211 to 264 Vac
60 Hz
59.3 to 60.5 Hz
0 Aac
Maximum continuous output current
Output overcurrent protection
Maximum utility backfeed current
Total Harmonic Distortion
Power factor
21 A
30 A RMS
0 A
<5%
>0.95%
Utility monitoring— islanding protection
Output characteristics
Vac, fac as per UL 1741 (2005)
Current source
Output current waveform
Sine wave
*
Factory settings can be adjusted with the approval of the utility. This
unit is provided with adjustable trip limits and may be aggregated
above 30 kW on a single Point of Common Coupling. See “Adjustable
Voltage, Frequency and Reconnection Settings” on page A–3.
A–2
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Output Power Versus Ambient Temperature
Adjustable Voltage, Frequency and Reconnection Settings
Utility disconnect settings can be adjusted using the GTConfigLite software tool.
Permission of the utility must be granted before adjusting any of these settings.
For more information about installing and using GTConfigLite, see the
GTConfigLite User’s Guide (p/n 976-0260-01-01), available on the software CD.
Setting
Default Range
Tolerance
Phase-to-phase (rms) high threshold voltage
Phase-to-phase (rms) low threshold voltage
261.00
214.00
261.00–264.00
±3 V
204.00–214.00
130.50–132.00
102.00–107.10
60.40–60.60
57.00–59.80
1000–2000
Phase-to-neutral (rms) high threshold voltage 130.50
±1.5 V
Phase-to-neutral (rms) low threshold voltage
Frequency high threshold
107.10
60.40
59.40
<1000
<2000
<160
±0.1 Hz
Frequency low threshold
Voltage (rms) High Clearing Time (ms)
Voltage (rms) Low Clearing Time (ms)
Frequency High Clearing Time (ms)
Frequency Low Clearing Time (ms)
Reconnect Delay (ms)
2000–5000
+0, –0.1 s
160–200
<160
160–300000
305000 60000–305000 n/a
Output Power Versus Ambient Temperature
Once the heat sink on the inverter reaches a maximum temperature limit, the GT
Inverter reduces its energy output to ensure maximum component ratings are not
exceeded.
GT5 Output Power Derating vs Ambient Temperature @ 550VDC
5000
4000
3000
2000
1000
0
25
30
35
40
45
50
55
60
65
70
Temperature (C)
Figure A-1 Output Power vs. Ambient Temperature
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Specifications
Efficiency
Maximum efficiency
CEC efficiency
96.2%
95.5%
1 W
Night-time tare loss
GT5- Efficiency vs Output Power
98.00
97.00
96.00
95.00
94.00
93.00
92.00
91.00
90.00
240
300
480
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% of Rated Output Power
Figure A-2 Typical Efficiency
Environmental Specifications
Operating temperature range
Storage temperature range
Power derating
-25° to +65° C (-13° to +149° F)
-40° to +85° C (-40° to +185° F)
See Figure A-1 on page A–3
Tolerable relative humidity limit
Operating: <95%, non-condensing
Storage: 100% condensing
User Display
Type
Size
alphanumeric liquid crystal display with backlight
2 lines by 16 characters
A–4
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Mechanical Specifications
Display Accuracy
Instantaneous Power
Voltage
+/- (30 W + 1% of reading)
+/- (1% of rating + 1% of reading)
+/- (1% of rating + 1% of reading)
+/- 5%
Current
System Lifetime energy
Mechanical Specifications
Outdoor enclosure
NEMA 3R, Rainproof
Inverter dimensions
(H × W × D)
28.5 × 15.9 × 5.7 inches (72.4 × 40.3 × 14.5 cm)
Shipping dimensions
(H × W × D)
34.1 × 20.4 × 10.3 inches (86.6 × 51.8 × 26.2 cm)
Inverter weight
Shipping weight
58 lb (26.3 kg)
76 lb (34.5 kg)
2
Input and output
terminals
AC and DC terminals accept wire sizes of 2.5 to 16 mm
(#14 to #6 AWG)
Disconnect switch
Integrated switch, disconnects both AC and DC
(meets NEC article 690), rated @ 600 Vdc
Regulatory Approvals
The GT Inverter has complete on-board over-current, over-temperature and
anti-islanding protection, and meets U.S., Canadian and international safety
operating standards and code requirements:
•
UL 1741 1st Edition 2005 Revision – Standard for Inverters, Converters,
Controllers and Interconnection System Equipment for Use with Distributed
Energy Resources (Includes IEEE 1547 and 1547.1)
•
•
CSA C22.2 No. 107.1-01 General Use Power Supplies
IEEE C62.41.2 – IEEE Recommended Practice on the Characterization of
surges in Low-Voltage AC Power Circuits (Location Category B). Part of UL
1741-2005. Refer to approval certificate for details.
Note: This inverter is compliant with IEEE 1547 for those requirements referenced in
UL1741 (2005), section 46.1.1.:
A utility interactive inverter and interconnection system equipment (ISE) shall comply
with the Standard for Interconnecting Distributed Resources With Electric Power
Systems, IEEE 1547, and the Standard for Cofnformance Test Procedures for Equipment
Interconnecting Distributed Resources with Electric Power Systems, IEEE 1547.1,
excluding the requirements for Interconnection Installation Evaluation, Commissioning
Tests, and Periodic Interconnection Tests.
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Warranty and Return Information
Warranty
What does this warranty cover? This Limited Warranty is provided by Xantrex Technology Inc. ("Xantrex")
and covers defects in workmanship and materials in your Xantrex Grid Tie Solar Inverter. This warranty period lasts
for five years from the date of purchase at the point of sale to you, the original end user customer. You require proof
of purchase to make warranty claims.
This Limited Warranty is transferable to subsequent owners but only for the unexpired portion of the Warranty
Period. Subsequent owners also require proof of purchase.
What will Xantrex do? Xantrex will, at its option, repair or replace the defective product free of charge,
provided that you notify Xantrex of the product defect within the Warranty Period, and provided that Xantrex through
inspection establishes the existence of such a defect and that it is covered by this Limited Warranty.
Xantrex will, at its option, use new and/or reconditioned parts in performing warranty repair and building
replacement products. Xantrex reserves the right to use parts or products of original or improved design in the repair
or replacement. If Xantrex repairs or replaces a product, its warranty continues for the remaining portion of the
original Warranty Period or 90 days from the date of the return shipment to the customer, whichever is greater. All
replaced products and all parts removed from repaired products become the property of Xantrex.
Xantrex covers both parts and labor necessary to repair the product, and return shipment to the customer via a
Xantrex-selected non-expedited surface freight within the contiguous United States and Canada. Alaska and Hawaii
are excluded. Contact Xantrex Customer Service for details on freight policy for return shipments outside of the
contiguous United States and Canada.
How do you get service? If your product requires troubleshooting or warranty service, contact your merchant. If
you are unable to contact your merchant, or the merchant is unable to provide service, contact Xantrex directly at:
Telephone: 1 800 670 0707 (toll free North America)
1 360 925 5097 (direct)
Fax:
1 360 925 5143 (direct)
Email:
Direct returns may be performed according to the Xantrex Return Material Authorization Policy described in your
product manual. For some products, Xantrex maintains a network of regional Authorized Service Centers. Call
Xantrex or check our website to see if your product can be repaired at one of these facilities.
What proof of purchase is required? In any warranty claim, dated proof of purchase must accompany the
product and the product must not have been disassembled or modified without prior written authorization by Xantrex.
Proof of purchase may be in any one of the following forms:
•
•
•
The dated purchase receipt from the original purchase of the product at point of sale to the end user, or
The dated dealer invoice or purchase receipt showing original equipment manufacturer (OEM) status, or
The dated invoice or purchase receipt showing the product exchanged under warranty
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Warranty and Return
What does this warranty not cover? This Limited Warranty does not cover normal wear and tear of the
product or costs related to the removal, installation, or troubleshooting of the customer's electrical systems. This
warranty does not apply to and Xantrex will not be responsible for any defect in or damage to:
a) the product if it has been misused, neglected, improperly installed, physically damaged or altered, either inter-
nally or externally, or damaged from improper use or use in an unsuitable environment;
b) the product if it has been subjected to fire, water, generalized corrosion, biological infestations, or input voltage
that creates operating conditions beyond the maximum or minimum limits listed in the Xantrex product specifi-
cations including high input voltage from generators and lightning strikes;
c) the product if repairs have been done to it other than by Xantrex or its authorized service centers (hereafter
"ASCs");
d) the product if it is used as a component part of a product expressly warranted by another manufacturer;
e) the product if its original identification (trade-mark, serial number) markings have been defaced, altered, or
removed.
Disclaimer
Product
THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED BY XANTREX IN CONNECTION WITH YOUR
XANTREX PRODUCT AND IS, WHERE PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES, CONDITIONS,
GUARANTEES, REPRESENTATIONS, OBLIGATIONS AND LIABILITIES, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE IN
CONNECTION WITH THE PRODUCT, HOWEVER ARISING (WHETHER BY CONTRACT, TORT, NEGLIGENCE, PRINCIPLES OF
MANUFACTURER'S LIABILITY, OPERATION OF LAW, CONDUCT, STATEMENT OR OTHERWISE), INCLUDING WITHOUT
RESTRICTION ANY IMPLIED WARRANTY OR CONDITION OF QUALITY, MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT
REQUIRED UNDER APPLICABLE LAW TO APPLY TO THE PRODUCT SHALL BE LIMITED IN DURATION TO THE PERIOD
STIPULATED UNDER THIS LIMITED WARRANTY.
IN NO EVENT WILL XANTREX BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES, LOSSES, COSTS OR EXPENSES HOWEVER ARISING WHETHER IN CONTRACT OR TORT INCLUDING WITHOUT
RESTRICTION ANY ECONOMIC LOSSES OF ANY KIND, ANY LOSS OR DAMAGE TO PROPERTY, ANY PERSONAL INJURY, ANY
DAMAGE OR INJURY ARISING FROM OR AS A RESULT OF MISUSE OR ABUSE, OR THE INCORRECT INSTALLATION,
INTEGRATION OR OPERATION OF THE PRODUCT.
Exclusions
If this product is a consumer product, federal law does not allow an exclusion of implied warranties. To the extent you
are entitled to implied warranties under federal law, to the extent permitted by applicable law they are limited to the
duration of this Limited Warranty. Some states and provinces do not allow limitations or exclusions on implied
warranties or on the duration of an implied warranty or on the limitation or exclusion of incidental or consequential
damages, so the above limitation(s) or exclusion(s) may not apply to you. This Limited Warranty gives you specific
legal rights. You may have other rights which may vary from state to state or province to province.
Warning: Limitations On Use
Please refer to your product manual for limitations on uses of the product.
SPECIFICALLY, PLEASE NOTE THAT THE XANTREX GRID TIE SOLAR INVERTER SHOULD NOT BE USED IN CONNECTION
WITH LIFE SUPPORT SYSTEMS OR OTHER MEDICAL EQUIPMENT OR DEVICES. WITHOUT LIMITING THE GENERALITY OF
THE FOREGOING, XANTREX MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE USE OF THE XANTREX
XANTREX GRID TIE SOLAR INVERTER IN CONNECTION WITH LIFE SUPPORT SYSTEMS OR OTHER MEDICAL EQUIPMENT
OR DEVICES.
WA–2
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Warranty and Return
Return Material Authorization Policy
Before returning a product directly to Xantrex you must obtain a Return Material Authorization (RMA) number and
the correct factory "Ship To" address. Products must also be shipped prepaid. Product shipments will be refused and
returned at your expense if they are unauthorized, returned without an RMA number clearly marked on the outside of
the shipping box, if they are shipped collect, or if they are shipped to the wrong location.
When you contact Xantrex to obtain service, please have your instruction manual ready for reference and be prepared
to supply:
•
•
•
•
The serial number of your product
Information about the installation and use of the unit
Information about the failure and/or reason for the return
A copy of your dated proof of purchase
Record these details in on page WA–4.
Return Procedure
1. Package the unit safely, preferably using the original box and packing materials. Please ensure that your product
is shipped fully insured in the original packaging or equivalent. This warranty will not apply where the product is
damaged due to improper packaging.
2. Include the following:
•
•
•
•
The RMA number supplied by Xantrex Technology Inc. clearly marked on the outside of the box.
A return address where the unit can be shipped. Post office boxes are not acceptable.
A contact telephone number where you can be reached during work hours.
A brief description of the problem.
3. Ship the unit prepaid to the address provided by your Xantrex customer service representative.
If you are returning a product from outside of the USA or Canada In addition to the above, you MUST
include return freight funds and are fully responsible for all documents, duties, tariffs, and deposits.
If you are returning a product to a Xantrex Authorized Service Center (ASC) A Xantrex return
material authorization (RMA) number is not required. However, you must contact the ASC prior to returning the
product or presenting the unit to verify any return procedures that may apply to that particular facility.
Out of Warranty Service
If the warranty period for your Xantrex Grid Tie Solar Inverter has expired, if the unit was damaged by misuse or
incorrect installation, if other conditions of the warranty have not been met, or if no dated proof of purchase is
available, your product may be serviced or replaced for a flat fee.
To return your Xantrex Grid Tie Solar Inverter for out of warranty service, contact Xantrex Customer Service for a
Return Material Authorization (RMA) number and follow the other steps outlined in “Return Procedure” on
page WA–3.
Payment options such as credit card or money order will be explained by the Customer Service Representative. In
cases where the minimum flat fee does not apply, as with incomplete units or units with excessive damage, an
additional fee will be charged. If applicable, you will be contacted by Customer Service once your unit has been
received.
975-0320-01-01
WA–3
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Warranty and Return
Information About Your System
As soon as you open your Xantrex Grid Tie Solar Inverter package, record the following information and be sure to
keep your proof of purchase.
Product Number
Your Model Number
Serial Number
864-0118
___________________________________________________
___________________________________________________
___________________________________________________
___________________________________________________
Purchased From
Purchase Date
If you need to contact Customer Service, please record the following details before calling. This information will help
our representatives give you better service.
Inverter Details
Type of installation (e.g. Residential/Commercial)
Length of time inverter has been installed
AC wiring size and length
__________________________________
__________________________________
__________________________________
__________________________________
__________________________________
DC wiring size and length
Description of fault messages and/or indicators on front panel
_______________________________________________________________________________________
_______________________________________________________________________________________
Description of problem
__________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
PV Details
Solar Panel Mount:
Roof
Pole
Ground
Solar Panel Brand and Model:
Nominal Voltage Range:
Peak Open Circuit Voltage:
Nominal Current Rating:
Maximum Current Rating:
Solar Tracker?
______________ Vdc
______________ Vdc
______________ Adc
______________ Adc
Yes
No
String #1:
String #2:
String #3:
String #4:
# of Panels: ______________
# of Panels: ______________
Series
Series
Series
Series
Parallel
Parallel
Parallel
Parallel
# of Panels: ______________
# of Panels: ______________
WA–4
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Index
fuse, location of ground fault protection 6–5
A
abbreviations and acronyms iv
AC circuit breaker requirements 3–4
AC grounding requirements 3–1
AC output voltage ratings A–2
AC wiring instructions 3–10
acceptable wire sizes A–5
G
general maintenance 6–3
ground clearance required for installation 2–2, 2–7
ground fault protection fuse 3–3
replacing 6–4
accessing AC and DC terminals 3–5
adjusting utility disconnect settings A–3
grounding requirements 3–1
GT-View 3–15, 5–10
C
H
checking AC utility voltage 4–2
checking PV array DC voltage 4–2
communication between multiple inverters 3–12
communications cabling 3–13
installing for inverters in parallel 3–15
standard CAT 5 wiring 3–14
Customer Service
humidity limits A–4
I
information about your system form WA–4
installation
ground clearance 2–2, 2–7
grounding requirements 3–1
location concerns 2–2
mounting 2–7
options 2–1
PV array requirements 2–3
inverter
features and options 1–2
removing from wiring box 6–6
serial number WA–4
preparing to call WA–4
D
DC wiring instructions 3–7
derating chart A–3
dimensions A–5
display accuracy A–5
E
efficiency chart A–4
electrical specifications A–2
enclosure type A–5
error messages and solutions 6–9
L
LEDs, See status LEDs
M
maintenance, general 6–3
maximum power point tracking, See MPPT
mechanical specifications A–5
messages, See front panel display
model number WA–4
MPPT
operational window 2–3
technology 1–2
multiple inverters
F
fault conditions and solutions 6–9
FCC information to the user viii
features and options 1–2
front panel display 1–2, 5–1
fault messages 5–8
normal operation messages 5–4
offline mode messages 5–6
reading messages 5–2
special messages 5–10
startup messages 5–2
AC and DC wiring 3–11
communication between 3–12
communications wiring 3–15
975-0320-01-01
IX-1
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Index
configuration 2–1
messages in normal operation 5–5
messages in offline mode 5–6
start the inverter 4–3
status LEDs
description 5–11
do not illuminate 6–9
red LED is on 6–9
O
operation
T
factors affecting performance 6–1
inverter startup 4–3
temperature
messages at startup 5–2
reassembling the unit 4–2
startup procedure 4–1
affecting PV array performance 6–1
range for locating inverter 2–2
terminal blocks in wiring box 3–6
terminators, male network 3–13
thermal derating chart A–3
torque values for wires 3–7
troubleshooting the inverter 6–9
P
parallel configuration
communication between inverters 3–12
communications wiring 3–15
power derating A–4
proof of purchase WA–4
purchase date WA–4
U
utility disconnect settings 5–3, A–3
PV arrays
angle of the sun 6–2
W
warranty
checking DC voltage 4–2
effect of shade on performance 6–2
factory ratings 6–1
temperature affecting performance 6–1
types of modules 2–3
voltage requirements 2–3
out of warranty service WA–3
terms and conditions WA–1
weight A–5
wiring
acceptable wire sizes A–5
PV array to Xantrex GT Inverter 3–7
torquing 3–7
wire sizes 3–4
wiring box
R
RJ45 ports
communication between inverters 3–13
location in wiring box 3–6
RS-232 port 3–13, 3–15, 5–8
description 1–3
removing the cover 3–5
removing the inverter from 6–6
RJ45 connectors 3–6
terminal block location 3–6
S
safety instructions vii
serial number WA–4
specifications
X
Xanbus technology 3–12
Xantrex web site v
electrical A–2
mechanical A–5
standard features and options 1–2
standard test condition 6–1
startup procedure
check PV array DC voltage 4–2
check utility AC voltage 4–2
monitor front panel display 5–1
overview 4–1
replace wiring box cover 4–2
IX–2
975-0320-01-01
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Xantrex Technology Inc.
1 800 670 0707 Tel toll free NA
1 360 925 5097 Tel direct
1 360 925 5143 Fax direct
customerservice@xantrex.com
975-0320-01-01
Printed in China
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