DIESEL LOCO – GFC CONTROL CIRCUIT

January 5, 2021, 8:08 PM
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GFC CONTROL CIRCUIT
 

 

To move the loco, field of Traction Alternator is to be excited by exciter generator. This work is done with the help of GFC contactor. It is electro magnetic contactor. To pickup this contactor GFC coil circuit is designed. This circuit starts from wire no. 13. When both control stand GFCO kept in close and MH closed (MH 1 – 8), the supply of wire no. 13 goes to wire no. 6 via wire no. 30E, 30C, and 30CC. Supply of wire no. 6 goes to GFC coil through following normally close interlocks
BKT (M)    NCI     6-6A
ECS(R)       NCI     6A-6
GFOLR      NCI     6B-6C

 

GR1           NCI     6C-6D
BKT (M)   NCI     6D-6E
TR             NCI     6E-6F
 CK3         NCI      6F-6H

GF coil will energize by wire 6H positive and wire 4 negative and GFC contactor pick up.
Other than this following interlocks are provided parallel to BKT (M) & TR (NCI).
NOI of P32 (6D-6F), NOI of P2 (6D-6F) will close at the time of parallel transition. MCO NOI (6D-6F) will close at the time of TM isolation.

 

 
 

 

 

 
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This entry was posted in 2 Railway Employee, 7 Study Material & Guide, Diesel Loco, Railway Employee