WDG-3A – рдмреНрд░реЗрдХ рд╕рд┐рд╕реНрдЯрдо (BRAKE SYSTEM )

04-01-2021

┬аBRAKE SYSTEM┬а Braking: dissipation of amount of kinetic energy into heat energy so as to retard wheel motion is called breaking. IRAB-1 brake system┬а- 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 -┬а 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/cm┬▓ to 5 kg/cm┬▓ 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┬а- It is pressure reducing, pressure

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WDG-3A – рдЯреНрд░рд╛рдВрдЬрд┐рд╢рди ( Transition )
January 4, 2021

┬аTransition┬а 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 – рдкреНрд░рдкреНрд▓рд╢рди рдХрдВрдЯреНрд░реЛрд▓ рд╕рд░реНрдХрд┐рдЯ ( Propulsion Control Circuit )
January 4, 2021

┬аPropulsion Control Circuit┬а 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 – рдЗрдВрдЬрд┐рди рд╕реНрдкреАрдб рдХрдВрдЯреНрд░реЛрд▓ ( Engine Speed Control (WW Governor)
January 4, 2021

┬аEngine Speed Control (WW Governor) Throttle and DMR circuit -┬аThis 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 – рдЗрдВрдЬрд┐рди рд╕реНрдЯрд╛рд░реНрдЯрд┐рдВрдЧ рд╕рд░реНрдХрд┐рдЯ (Engine starting circuit )
January 4, 2021

┬аEngine starting circuit┬а 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 – рдмреИрдЯрд░реА (Battery and Battery charging circuit )
January 4, 2021

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

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WDG-3A рдЗрд▓реЗрдХреНрдЯреНрд░рд┐рдХрд▓ рд░реЛрдЯреЗрдЯрд┐рдВрдЧ рдорд╢реАрди (Electrical Rotating Machines )
January 4, 2021

Electrical Rotating Machines┬а 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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