DIESEL LOCO – GFC CONTROL CIRCUIT

05-01-2021

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) 

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ACT (RS) ABB Loco (English) (17. DRIVING / BRAKING)
January 10, 2021

Driving 1.After creating MR pressure above 6.4 kg/cm2 and node information no. 570. 2.Move the reverser into desired position. 3.Release the parking brake if applied 4.Put A9 to ‘RUN’ position & ensure BP 5 kg/cm2 5.Check AFI is not deviating. 6.Set the TE/BE throttle to desire position. 7.Put SA9 handle to

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ACT (RS) ABB Loco (English) (18. OPERATION OF THROTTLE)
January 10, 2021

Operation Of Throttle TE/BE Throttle  The TE/BE throttle controls traction and the electric braking effort of the locomotive with angle transmitter and auxiliary contacts. The TE/BE throttle has the following three end positions:  For Traction  Position 1/3                                 33% tractive

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ACT (RS) ABB Loco (English) (16. OPERATION OF REVERSER)
January 10, 2021

Operation Of Reverser  Reverser has following 3 positions. Position ‘F’ = Forward Position ‘O’ = Neutral Position ‘R’ = Reverse Throttle and reverser are interlocked

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ACT (RS) ABB Loco (English) (15. OPERATION OF BL KEY)
January 10, 2021

Operation Of BL Key BL key is operated for following mode: 1. DRIVING MODE :- ( Off - D ) 2. SELF HOLD MODE .- ( D - Off ) 3. Switching OFF control electronics: ( D - Off - C - Off ) 4. COOLING MODE:-- ( D - Off - C - Off - C ) Driving Mode: This mode is used to drive the loco. To achieve this mode driver has to: 1) Insert BL key

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ACT (RS) ABB Loco (English) (12. AUXILIARY POWER CIRCUIT)
January 10, 2021

Auxiliary Converter    General:-    The motors used for the auxiliary circuits are 3-phase squirrel cage motors. The cost of maintenance is therefore low. There are total 12 auxiliaries run by 3-phase, 415 V AC supply. This 3- phase 415 V, AC supply is obtained by Auxiliary converter to feed different 3-phase auxiliaries and one battery

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ACT (RS) ABB Loco (English) (14. HOW TO ENERGISE THE LOCO)
January 10, 2021

How To Energies The Loco 1.Check the machine room and cubicle HB1/2,SB1/2 and pneumatic panel and ensure that all Circuit breakers, rotating switches and cock at Pn. Panel are at Normal position and ensure that key ‘IG-38’ is provided on pneumatic panel. Also ensure that panto selector switch is at normal position.  2 compartment

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