Application

QX4 series star triangle starter cabinet is suitable for three-phase AC 50HZ/380V, three-phase squirrel cage motor with power below 135KW, used to control the start, run and stop of the stator winding of the motor from "star" to "triangle". Have motor overload and break equal protection function.

Main fucntions and features

When the starter starts the motor, the voltage applied to each phase of the stator winding is reduced to 57.7% of the voltage in the circuit at the start, the current is 1/3 of the direct start, and the starting torque is also reduced directly to 1/3 of the start. The working system of the starter cabinet is a discontinuous long-term working system or a repeated short-time working system. The operating frequency under repeated short-time work is 30 times per hour, and the interval between continuous operation starts is 90 seconds.