1 DC System DC AC Circuit at The Sub Station
1 DC System DC AC Circuit at The Sub Station
1 DC System DC AC Circuit at The Sub Station
Stations
Boost Charger
The Battery unit consists of number of Secondary Cells
(Storage Cells).
Secondary Cells
c) Interlock Circuits
•Interlock Between Breakers and Isolators
•Interlock Between Breakers
DC CIRCUITS
2) Indication and •Breaker close Indication Circuit
Alarm Circuits •Breaker Open Indication Circuit
•Healthy Trip Indication Circuit
•Spring Charge Indication Circuit
•Sema Phore circuit
•Breaker Trip alarm circuit
•Over Current/Earthfault relay trip Alarm
•Transformer Alarm Circuits, Oil Temp
Circuit
AC CIRCUITS
1) CT Circuits •C.T Circuit for metering
•C.T Circuit for Distance Protection
•C.T Circuit for Transformer
of Power Transformers
•L.T Supply to Battery Charger
•L.T Supply to Air Compressors
•L.T Supply to Yard Lighting
•L.T Supply for Sub Station Control
(Individual)
•Simultaneous Remote tap