BCX03 Battery Chargers
Capricorn Controls
DA01BCX1-1 Data & Application Note
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BCX03 Battery Chargers
Genset Controls - Timers - Monitors - Trips - Battery Charging - Spares & Accessories - Custom Products
The BCX03/12 & BCX03/24 are 3 Amp, CONSTANT POTENTIAL solid state battery chargers which allow
maintenance free charging of Lead-Acid batteries, over a wide ambient temperature range.
OPERATION : The electronic circuitry ensures that the battery is
maintained at the correct ‘Float Voltage’ with negligible ‘gassing’. As the
battery is charged it’s internal resistance rises, “tapering” the charge
current accordingly, until the battery terminal voltage approaches the
charger reference voltage, whereupon the battery is trickle charged to the
“constant potential” float level.
Although the output current is not controlled electronically, it is limited
by virtue of the transformer design. However, the output current can
initially rise upto 6A, for a short duration.
An auto-resetting ‘Thermal-Trip’ is positioned to monitor the
temperature of the secondary winding & transformer laminations and is
used to disconnect the primary winding.
VOLTAGE THRESHOLD : Unless specified otherwise, all units are
pre-set at : 2.3V/Cell ‘Float’ level. The potentiometer is factory calibrated
(at centre scale) and should not normally require adjustment.
CHARGE INHIBIT : This prevents the charger from switching on when the terminal voltage is below (approx.)
half its ‘Float’ level, thus protecting it from short circuit and reverse polarity fault conditions.
OVERRIDE (O/RIDE) TERMINALS : Linking these terminals - defeats the ‘charge inhibit’ protection (see
above), enabling the charger to operate, even into a ‘short-circuit’ ! If these terminals are to be permanently linked
it is recommended that this is done AFTER commissioning and an Output fuse is added (6Amp Anti-Surge).
CHARGER ON (LAMP) TERMINAL : A +Ve output to a Charge Failure Monitor (CFM400) & / or an
external ‘Charger On’ lamp (100mA max. load).
CHARGING TERMINAL : A +Ve output for an external (incandescent) ‘Charging’ lamp (100mA max. load).
This is not suitable to drive a relay.
LEAKAGE CURRENT : Approx. 2mA
CONSTRUCTION : Mild steel (1mm) zinc plated and gold passivated base plate, frame transformer, aluminium
heatsink, and printed circuit board assembly. The charger should be mounted so that the natural air-flow passes
through the transformer core.
INDICATORS : “Power-On” LED.
“ Charging” LED
SUPPLY VOLTAGE : 115 +/- 20% 50/60HZ
(Specify on order)
230 +/- 20% 50/60HZ
TEMPERATURE RANGE :
-10 deg C to +55 deg C (operating)
-20 deg C to +70 deg C (storage)
DIMENSIONS :
80mm (H) x 90mm (W) x 106mm (D) overall
54mm x 72mm x M4 fixing centres
WEIGHT : 1.2 Kg
BASE PLATE : Fitted as standard
Designed & manufactured in England by Capricorn Controls
Telephone: +44 (0) 1295 272360 Fax: +44 (0) 1295 264766 E-mail: sales@capricorn-controls.com
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Connections
‘Charger On’ Lamp
Do not use LED types
W
Mount
horizontally
H
Fit Link for
Charge Inhibit
‘Override’
‘Charging’
+Ve Output
Natural air flow
5A A/S
Red LED
‘Charger On’
Output
Fuse
B+
B-
A.C.
Supply
Notes:
1. Fit ‘Override’ link after commissioning or to charge batteries < ½ Float Level.
2. The fuse is for protection from a reverse polarity battery and is not designed for short-circuits
CAPRICORN CONTROLS LIMITED
INDUSTRIAL ELECTRONIC ENGINEERS
SPECIALIST CONTROLS FOR ENGINE APPLICATIONS
Thorpe Close, Banbury, Oxon., OX16 4SW. England
Tel: +44 (0) 1295 272360 Fax: +44 (0) 1295 264766
E-mail: sales@capricorn-controls.com Web: www.capricorn-controls.com
Keystart, Remote Start, Start-on-Demand, Mains Failure, Mutual Standby & Multi-set Controllers.
Annunciators and Lamp Modules. Voltage, Current, Frequency, Speed, and Temperature Monitors.
Timers. Transport Refrigeration Spares. Batteries, Battery Chargers and Power Supplies. Spares and
Accessories. Customised Products and Bespoke Designs.
E. & O. E.
The Proven Solution to Power Controls
DA01BCX1-1
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