ACT (RS) ABB Loco (English) (12. AUXILIARY POWER CIRCUIT)

10-01-2021

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 charger.    The auxiliary circuits are controlled as required. The traction motor and oil cooling blowers run only when required. The control electronics adjusts the blower speeds depending on measured operating temperatures, nominal traction values and speed.  Transformer and traction converter oil pumps work continuously whenever the

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