Solid Signal > Commercial Equipment > Racks and Enclosures > DuraComm BMS-12-75
The Model BMS-12-75 is a complete battery management system for installations, which already have a primary power supply. Smart Charging with Low Voltage Disconnect maintains battery protection by preventing battery failures caused by over-charging or excessively deep discharging. Dual Schottky diodes provide smooth transfer to battery power and seamlessly auto-revert back to the main AC powered source.
- AC Input Voltage: 120 V
- AC Input Voltage Range: 90-264 V
- Output Voltage: 12 V
- Output Banks: 1
- Thermal Overload Circuit: N/A
- Rated Charging Output: 75 A
- Mfg. Warranty: 3 Years
The Smart Charger is designed to auto-charge and maintain Gelled electrolyte (Gel-Cell) and liquid electrolyte lead-acid 12 volt batteries from 60 to 120 Amp Hour. The charger is a constant current monitoring charger for the charging and maintenance of fixed location UPS, emergency lighting systems, and telecommunications battery backup systems.
The charger is protected against over loading, over-voltage, over-temperature, short circuit and reverse polarity by auto shut down. The charger auto-recovers after fault condition(s) are removed.
The Model BMS-12-75 incorporates an automatic Low Voltage Disconnect that monitors battery voltage and disconnects the load when the battery voltage drops below 11.5 VDC. The LVD has been adjusted and calibrated at the factory for correct voltage disconnect and re-connect. No adjustment is required.
The LVD is pre-set to disconnect the load at 11.5 VDC. However, to prevent premature or false disconnect when the battery voltage drops below the 11.5 volt threshold a 2 minute timer is started. If the battery recovers to above 11.5 volts, the timer resets and waits. The battery can and will recover if the system is a repeater or remote base station or similar equipment that has a varying demand that fluctuates from low to high current. The timed delay ensures the battery is not disconnected until necessary to prevent damage.
After the AC main power is restored and the battery is recharging, the LVD will reconnect the load when the battery voltage exceeds 12.5 volts.
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