DC power supply for communication equipment. One or more single core cables are needed for one main standby
DC power supply for communication equipment is one main and one standby, actually double power supply.
The equipment rack also requires a separate protective ground wire, and now the individual new equipment racks require 2 separate protective ground wires.In this way, the communication equipment with DC power supply, one main, one standby, usually need to put 5 single core cable, 2 separate protection ground wire, always need 6.
Each power supply needs two single core cables, one is the work ground wire, and the other is the -48V power line. One main, one standby, two way power supply is 4 single core cables.
