DIESEL LOCO – Duties of Assistant

05-01-2021

DIESEL LOCO - Duties of AssistantLoco Pilot General duties1. While report on duty he must be in proper uniform and well disciplined.2. He should be aware of rules related to his duty, whether he is in possession or not a copy of rules or translated copy of rules.3. He should be present on the time, at the place for duty which is assigned by administration, more ever if required on other place and time for his services. He should always alert and cautious while on duty.4. In all conditions he should obey all lawful orders of his loco pilot.5. He should have the knowledge of the following -a. Lay out of all types of loco, its system and their sub systems, its subsidiary equipment with

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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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ACT (RS) ABB Loco (English) (11. TRACTION POWER CIRCUIT)
January 10, 2021

Traction Power Circuit ( WAG-9 & WAP-7)    Traction Power Circuit:  Power from the overhead Catenary is directed to the main transformer, mounted on the locomotive under frame, via the pantograph. The traction circuit is split into two separate circuits after the main transformer. The traction converters can

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ACT (RS) ABB Loco (English) (10. MAIN TRANSFORMER )
January 10, 2021

Main Transformer    General: 25 KV, 1-phase, AC Supply is taken from OHE catenary/ contact wire through pantograph, roof equipment and VCB (DJ). The same supply is fed to charge the “ parallel induction transformer” where it is stepped down to different operating voltage. .   The tank is filled with transformer oil:    • In

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ACT (RS) ABB Loco (English) (8. PANTO & MCPA)
January 10, 2021

Pantograph    Two pantographs are provided on either end of loco. Design of pantograph is same as other AC locos. For raising and lowering of pantograph one switch ‘ZPT’ is provided on panel ‘A’ having 3 positions, UP , Off and DOWN.    When we press switch down ward (i.e. position UP) and release - panto will up.    When we

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ACT (RS) ABB Loco (English) (9. POTENTIAL TRANSFORMER)
January 10, 2021

TRACTION POWER    Potential transformer-.The primary voltage transformer is situated on the converter roof hatch and attached to the pantograph via the roofline. The primary voltage transformer reduces the catenary voltage, approximately 25 KV, to 200 volts AC. A resistor is placed across the primary voltage TFP to provide a reference load.

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ACT (RS) ABB Loco (English) (7. BATTERY)
January 10, 2021

Battery    In ABB loco NiCD Battery is used. There are total 78 cells in the batteries which are placed in 2 boxes at either side of the locomotive. Each box contains 39 cells and each battery has 3 cells. Capacity of battery is 199 A-H and output is 110 V. To charge the battery, one battery charger is provided with circuit breaker no. 110

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