수배전반 ( incoming panel ) - pinesys.co.kr

1 ( 1) ( 2) ( 3) ( 4) ( 5) ( incoming panel ) , , ( ) , .. 1,000 KVA (CB) CB 300 KVA (PF) (LBS) . , 22kv 20 , 33kv 30 , 66kv 50 , 154kv 140 . 5,000 KVA 2 . 30.

2 CT 5 . 3 .. 4 . ( supervisory control ) , , , (DCS) . ALTS (automatic load transfer switch: ) .. 3 .. ASS (ASS) (automatic section switch) 3 4.

3 RECLOSER , CB Recloser . 1982 12 28 2000kVA , 4000kV 500kVA (ASS) DS 900(A) . (reclosing relay) . GR PAS (pole mounted air switch : ) .. 1.

4 LBS (load breaker switch: ) , . 3 (Trip Device) 3 . ( ) 3 . , , , . 100 , 15 200 .. ` MOF ( metering out fit : ) . , .. MOF.

5 PT CT . MOF .. 3 ( ) , 3 . 98 .. 30 . PT ( potential transformer : ) .. , , , , PT 1 2 110V . 1 1A PT PT PT PT PT.

6 1 ( ) 50(VA) , , 200(VA) . , ( , , ), , ( , ), . 100 , 15 . GPT ( Grounding Potential Transformer : ) ( ) (OVGR: Overvoltage Ground Relay) , , , . ( , ) , ( ) ( ) , 3 4 1 GPT OCGR CT . ZCT( ) (1 30-40VA).

7 , . CT ( current transformer : ) PT PT CT . , . 1 2 2 . CT 1 2 2 ( ) 1 2 , . CT PT .. 1 K , L 2 k, l . 50VA . PT , 100 , 15 . , . (meter) : .. ZCT ( zero current transformer : ).

8 ZCT . ZCT . 0 1 ( ) 0 ZCT ZCT ( ) ( ) ZCT . 1 200mA,2 . SGR SGR ZCT 1 200mA . ZCT ZCT .. 2 2 .. DS (disconnecting switch : ) .. ( ).

9 ( ) (2 ). , , , , . 500 , 20 1,000 . VCB ( vacuum circuit breaker : ) , . : . : : , .. : . : .. : , : . : ( ).

10 3 , , , , , .. ( ) . 520 MVA 500 , (630A ) 10,000 , (630A ) 20,000 , 20 . ACB ( air circuit breaker : ) . 1,000V . ABB ((air blast circuit breaker : ) 10-30 / g . , V . GCB ( gas circuit breaker : ) SF6.)