Description
The 2-PPS(-220) Primary Power Supply is a switch-mode power source, which energizes system modules, monitors the AC line, and performs ground fault testing. In the event of a brownout or AC power failure, the primary power supply provides battery charging and automatic transfer to backup power. The power supply is designed to prevent total battery discharge, and automatically disables the battery charger during an alarm. MOVs and common mode choke protect the AC input voltage from transient spikes. The output also provides power for Notification Appliance Circuits (NACs) and four-wire smoke detectors.
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