BOSCH Pln-24ch12 24v Battery Charges

The PLN-24CH12 and PRS-48CH12 Battery Chargers are designed for public address and emergency sound systems, to assure that the system batteries are always charged. Rack mountable, the unit charges lead-acid batteries and simultaneously provides 24 V or 48 V for system components that use 24 V or 48 V exclusively. These chargers are fully compliant and certified to EN 54-4. The battery chargers are premium quality, intelligent, microprocessor controlled devices.

Performance
The maximum charger current is 12 A for charging the battery. The maximum battery capacity, according to EN 54-4, is therefore 225 Ah, minimum size is 86 Ah. The maximum output of the back-up power system is 150 A. The charger has an input voltage range of 195 V to 264 V, and a power factor corrector. The charger features automatic shutoff when the battery voltage is too low, to prevent battery damage. It also features over-voltage protection, protection against wrong battery polarity and short-circuit protection. The outputs are protected by fuses. The power supply takes a resistance measurement of the battery including connections every 4 hours. The charger comes with a temperature sensor that is used to adjust the charging voltages. The charger has additional 24 V or 48 V (depending on model) auxiliary outputs, to supply power to equipment that needs 24 V or 48 V as primary power. The current capacity of these outputs is 5 A per output. The charger has relay outputs to signal a mains fault, battery fault and charger output voltage fault.