Das Szenario
A substation needs a 120V DC auxiliary power single-line diagram showing a station battery bank, two battery chargers, a common DC distribution bus, and separately protected feeders for protection relays, SCADA, and control circuits.
Was diese Zeichnung zeigt
Die dahinterstehenden Entscheidungen verstehen.
01
Represent battery chargers as DC source nodes feeding the 120V DC bus through dedicated output breakers
02
Connect the station battery to the same bus through a battery breaker so chargers and battery share the distribution panel
03
Protect each protection-relay and control feeder with an individual breaker to isolate faults without losing the whole DC bus
Use for substation DC auxiliary system design, relay panel power distribution, or as-built documentation of a 120V DC station service panel.