M020101
Issue 4, revised 07/98
Catalogue section 75
R
The Generator Controls Division of
BC700/701 series
AUTOMATIC BATTERY CHARGERS
3 AMP CONSTANT CURRENT
The Modex range of 3 Amp constant current chargers
provide for the fully automatic monitoring and charging of
standby diesel generator battery packs.
The advantages of this type of charger are primarily:–
·
·
·
Rapid recovery of battery charge, equivalent to a
considerably higher rating ‘taper’ type charger.
Protection from overcharging. The unit switches off
automatically once the batteries are fully charged.
Prolonged battery life, from the reduction of gassing
and continual exercising of the cells.
When connected, the charger measures the battery
terminal voltage. If this is below a pre-calibrated threshold,
the unit outputs a series of charge pulses to the battery,
regulating the average current to a constant 3 Amps.
Product Specifications
Power supply:
BC700
BC701
Between charge pulses, the BC700 continues to monitor
the battery terminal voltage. When the measured voltage
has climbed to a suitable threshold the charger turns off,
allowing the battery to decay back to the lower voltage
threshold before the cycle is repeated. The ‘switch off’
and ‘switch on’ voltage thresholds are factory calibrated
according to the type of battery used:–
Nominal voltages
Voltage ranges
Frequency range
Power consumption
110 or 230 V AC (pin selectable)
95 – 135 V AC or 190 – 270 V AC
45 – 65 Hz.
< 80 VA
< 160 VA
DC charge output:
Charge current
Switch off threshold range
Switch on/off hysteresis
3 Amps
13.0 – 15.9 V DC 26.1 – 31.9 V DC
approx. 1 V DC approx. 2 V DC
BC700 (12 V)
Lead Ni-Cd
BC701 (24 V)
Lead Ni-Cd
Charge fail output:
Calibration:
Acid 9 cell 10 cell Acid 18 cell 20 cell
Type/rating
– ve DC (open collector transistor)
max. 150 mA @ 33 V DC
Normal operation:
Switch on, VDC
Switch off, VDC
12.6 12.3 13.8 25.4 24.7 27.6
13.7 13.2 14.8 27.4 26.6 29.5
General:
Weight
Ambient temperature range
EMC emission/immunity
approx. 1.75 kg
–10 to +55 oC
to EN50081-2/EN50082-2
approx. 2.55 kg
Boost operation:
Switch on, VDC
Switch off, VDC
14.9 13.6 15.0 29.5 27.2 29.9
15.7 14.5 15.9 31.5 28.9 31.9
Connection
The rate of the charge/decay cycle depends on the
capacity and condition of the battery and the static load
across it (the charger itself presents negligible load).
charge
fail
RCF
The ‘boost’ mode of operation may be selected by
linking two terminals, either through a remote panel
switch, relay or timer. This increases the switch on and
switch off voltage thresholds, and may be used for short
periods to increase the battery charge level.
Charge
Fail
230V
AC
+
–
+
battery
–
110V
supply
BC700/701
N
E
Boost
The charge cycle state is indicated by two LEDs:
amber for ‘on charge’ and green for ‘charge complete’.
Two –ve DC (open collector transistor) outputs are provided
for the remote signalling of ‘on charge’ and ‘charger fail’
conditions.
Boost switch/timer
Dimensions (mm)
The BC700 series uses an open-chassis, metal cased
design, suitable for bolt or stud mounting in an enclosed
panel. Electrical connection is by ¼" blade terminals on
the main PCB.
BC700
BC701
When ordering, please specify:–
a) Product type: BC700 (12V) or BC701 (24V)
b) Battery type: lead acid, or number of Ni-Cd cells,
or special calibration requirements
Accessories:–
CVT502/506 Battery voltage trips, DIN rail mounted
CVT102/106 Battery voltage trips, 11 pin plug-in
Frank W. Murphy Ltd.
Frank W. Murphy Ltd. en France
Frank W. Murphy Southern Division
Murphek Pty. Ltd.
Incorporating Modex Automation
Church Road, Laverstock, Salisbury U.K.
Tel: +33 (1) 30 76 26 26 Fax: +33 (1) 30 76 39 89 PO Box 1819, Rosenberg, Texas 77471, USA
1620 Hume Highway, Campbellfield, Vic. 3061 Australia
Tel: + 61 3 9358 5555 Fax: + 61 3 9358 5558
Direct usine Tel: + 44 1722 410697
Tel: + 1 281 342 0297 Fax: + 1 281 341 6006
email: sales@fwmurphy.com
Since 1939
Pour service en Français, tél: + 44 1722 410697
Frank W. Murphy Manufacturer
PO Box 470248, Tulsa, Oklahoma 74147, USA
Tel: + 1 918 627 3550 Fax: + 1 918 664 6146
email: sales@fwmurphy.com
Frank W. Murphy Pte, Ltd.
Murphy Switch of California
Murphy de Mexico S.A. de C.V.
email: sales@fwmurphy.co.uk
No. 2 Tuas South Street 2, Sprintecs Building
PO Box 900788, Palmdale, California 93590, USA Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
02-01/02, Singapore 637895
Tel: + 1 805 272 4700 Fax: + 1 805 947 7570
email: sales@murphyswitch.com
San Luis Potosí, S.L.P. México 78384
Tel: + 52 48 206264 Fax: + 52 48 206336
email: murmexsl@sanluis.podernet.com.mx
Tel: + 65 863 1398 Fax: + 65 863 0208
email: fwmsales@fwmurphy.com.sg
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