The GM023 AUTOMATIC BATTERY CHARGER is a compact unit designed for internal switchboard mounting. The charging characteristic is initially a constant current which automatically tapers off to a very low level of trickle current as the battery voltage rises towards the charger float voltage output. The float voltage and maximum current output levels are easily preset by controls on the unit.
A boost condition can be introduced which causes the full constant current to flow (irrespective of battery voltage). A boost timer is incorporated which resets the charger to normal automatic float charging irrespective of the position of the boost switch, after four hours.
Battery undervoltage and overvoltage are monitored and individual relays are energized and LED lamps are illuminated when the battery voltage exceeds the preset limit. Isolated change over relay contacts are provided for both alarms. A low voltage delay timer can be set to 150 seconds to prevent nuisance low voltage alarms during engine cranking. Power Fail relay is energised when power is applied.
NOTE: Charger output must be turned off when batteries are disconnected.
SPECIFICATIONS
| Input supply: | mains 240V 50Hz (other voltages and frequency available) |
| Output voltage: | 12 or 24VDC (specify on order) |
| Output current: | 20A maximum continuous |
| Operational temperature range: | 0 – 60 C ambient |
| Relay contacts: | 10 A resistive, High Volts, Low Volts, Power fail |
| Control potentiometer 1: | Set float voltage (factory preset) |
| Control potentiometer 2: | Set maximum current (factory preset) |
| Control potentiometer 3: | Set low output voltage – battery charger fail (factory preset) |
| Control potentiometer 4: | Set high output voltage (factory preset) |
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