The apparatus of power traction and auxiliary circuits ASTVTS-01 is intended for transformation of constant voltage 550 V of contact network of electric rolling stock of urban electric transport into regulated three-phase voltage for speed control of two traction asynchronous motors, provision of set modes of movement, control and commutation of auxiliary circuits 550 V (heating, conversion devices) and provision of modes of charging/discharging of energy storage (optionally, in agreement with the manufacturer) on trams.
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