PFU4 Filter card/unit
The PFU4 board suppresses interference from the -48 V power supply to the cabinet. The PFU4 is equipped with four 10 A filters. Feed voltage -48 V is distributed to the DC/DC-converters, REU and magazine from the AC/DC-converter, to the PFU-board via the distribution unit. Internal and/or peripheral batteries are connected to the distribution unit.
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