WDG-3A – ब्रेक सिस्टम (BRAKE SYSTEM )

04-01-2021

 BRAKE SYSTEM  Braking: dissipation of amount of kinetic energy into heat energy so as to retard wheel motion is called breaking. IRAB-1 brake system - Locomotive fitted with IRAB-1 brake system can work only on air brake stock. Various valves and cocks are provided in IRAB1 brake system A9 Valve -  It is pressure reducing, pressure maintaining and self lapping valve. It is provided on both control stands; it reduced main reservoir pressure 8-10 kg/cm² to 5 kg/cm² and has 4 ports 30, 5, 1 and exhaust. Its handle has 5 positions - 1. Release 2. Minimum reduction 3. Full service 4. Over reduction 5. Emergency SA9 Valve - It is pressure reducing, pressure

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WDG-3A – ट्रांजिशन ( Transition )
January 4, 2021

 Transition  Combination of traction motors are changed automatically on predetermined speed of Loco is called Transition. It is required to increase traction motor speed so that Loco speed can be increased. Back EMF of traction motor restrict Loco speed even on eighth notch. To increase speed Back EMF is controlled by following method

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WDG-3A – प्रप्लशन कंट्रोल सर्किट ( Propulsion Control Circuit )
January 4, 2021

 Propulsion Control Circuit  To move the locomotive, supply of Traction Alternator is send to traction motor through Power contactor, BKT, Reverser. This circuit is design to pickup above electro pneumatic contactor as and when require. In this circuit as per speed of locomotive two combination of traction motor are changed and during

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WDG-3A – इंजिन स्पीड कंट्रोल ( Engine Speed Control (WW Governor)
January 4, 2021

 Engine Speed Control (WW Governor) Throttle and DMR circuit - This circuit starts from wire no. 50 which energizes when MB2 is kept ON. Supply of wire no. 50 goes to wire no.16D - 16A when MCB1 & 2 kept ON. Supply of wire no.16A goes to 16 through MH Idle & MH in Motoring position of both control stands. When wire no.16 gets

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WDG-3A – इंजिन स्टार्टिंग सर्किट (Engine starting circuit )
January 4, 2021

 Engine starting circuit  Traction alternator armature shaft is connected to main crank shaft with the help of flange joint. On the other end of Traction alternator armature shaft bull gear is fitted. This bull gear is massed with auxiliary generator and exciter generator gear. Rotation of main crank shaft by auxiliary generator and exciter

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WDG-3A – बैटरी (Battery and Battery charging circuit )
January 4, 2021

Battery and Battery charging circuit  Battery Battery - It is a device which converts chemical energy into electrical energy. It is a combination of two or more cells.   Primary Cell – It can not be recharged. Secondary Cell – It can be recharged. Charging – During this process electrical energy is converted into chemical

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WDG-3A इलेक्ट्रिकल रोटेटिंग मशीन (Electrical Rotating Machines )
January 4, 2021

Electrical Rotating Machines  There are 11 rotating machines provided on loco. 1. Traction Alternator 2. Auxiliary Generator 3. Exciter Generator 4. Techo Generator 5. Axle Generator 6. Traction Motor 7. Fuel Pump Motor 8. Crank Case Exhauster Motor 9. Dynamic Braking Blower Motor 10. Eddy Current Clutch Coil 11. Cyclonic

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