1. HTR 3 cabinet-type high voltage thermostat is intended for the voltage-drop start of the high voltage squirrel-cage AC asynchronous motors and the asynchronously started high voltage synchronous motors. As an initialtion nationwide, the thermostat has superior start performances to such kinds of starters as reactor starters and autoconnection transformer starters for its small and cinstant start current as well as the soft start features of gradually increasing torque.

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