DISEL LOCO – WDM 3A Locomotive

05-01-2021

WDM 3A Locomotive This is mixed service loco made for hauling more load. These are of two types one is rebuilt WDM2 and other is new one. New loco has 14000 series and rebuilt loco has 16, 17, 18 series. In WDM3A, 3 stands for 3000 and A for additional 100 HP hence the horse power engine is 3100 HP. It has fuel efficient kit & AC-DC transmission. Equipments of  Superstructure are similar to WDG3A loco and under truck are similar to WDM2 loco.   General Data   Engine Horse Power                                                     3100 HP   Loco Horse Power                                                       

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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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ACT (RS) ABB Loco (English) (13. HARMONIC FILTTER)
January 10, 2021

Harmonic Filter Line harmonic filter is connected with primary winding of main transformer which consist of resistances and capacitor. This harmonic filter reduces/suppressed the high frequency harmonics to avoid disturbances in signaling. If the harmonic filter get bypassed by the system, the speed of the loco / train will be automatically

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