Protkarsh Kumar's video: WAG9HC - Three phaser 6100HP Electric Locomotive Idle Sound Stereo Audio

The Indian locomotive class WAG9 is a class of 25 kV AC electric locomotives that was developed in 1995 by ABB Group (ABB) for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Goods traffic (G), 9th generation (9) locomotive. They entered service in 1996. A total of 3134 WAG9 have been built at Chittaranjan Locomotive Works (CLW), with more units being built at Banaras Locomotive Works (BLW), Bharat Heavy Electricals Limited (BHEL) and Patiala Locomotive Works (DMW). It was the most powerful freight locomotive of its fleet until the formal introduction of the WAG12. The WAG9 is one of the most successful locomotives of Indian Railways serving freight trains for over 26 years. A passenger variant of the WAG9 was developed namely the WAP7 locomotive by modifying the gear ratio to pull lighter loads at higher speeds. The subclass ‘C’ signifies that this loco is equipped with conventional brake rigging system. The G9 locomotives have an arrangement called TBU (Tread Braking Unit) to apply the loco brakes. This is a somewhat heavy unit which can apply individual brake on any wheel. Probably the original intention was to enable selective braking on any axle to provide better adhesion through wheel slip control. However, in reality, the TBU system has been an issue since long like that of vibration of TBUs and TBUs getting dislodged/dislocated. To be more specific when brakes are applied using effective cylinder pressure, then brake shoe try to stop the wheels. Now with this conventional brake rigging system, after application of brakes, the axle set and wheel dismantling will not happen. Also, the magnitude of Braking Force can be obtained from the DDU (Driver Display Unit) with this system in place. Thus, this WAG9 HC is Heavier Load with Conventional Brake Rigging. The conventional brake rigging is cheaper and easier to maintain, weighs less and is mostly trouble free in operation. From now on, probably all new WAG9s will belong to the HC class.