BPL power supply unit is designed for power supply of auxiliary equipment circuits of mine contact electric locomotives and converts constant voltage 250 V into stabilised constant voltage 12 V with load current up to 2,5 A and voltage 24 V with load current up to 2,5 A. In addition, the source can be used for low voltage power supply of automation, communication, information transmission and other devices in mines and mines not dangerous by gas, steam or dust.
Built-in rechargeable battery provides the ability to automatically switch from 12V to battery power supply when the supply mains voltage disappears.This modification is a modernised version of BPL 275-12, including the functions of BPL 275-12 and voltage limiter ON-375.
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