When the top sleeve is reversing-rotated, the contact piece leaves the inclining surface, the upright rod is bounced back upwards, and the motorcircuit is cut off.
反向转动顶套时，触片离开斜面，竖杆向上弹回，马达电路被断开。
2
The configuration program of incoming loop, bus coupler circuit, feeder circuit, motorcircuit, reactive power compensation and the control power in switchgear was described.
阐述了开关柜中受电回路、母联回路、馈电回路、电动机回路、无功补偿和控制电源的配置方案。
3
The article describes a soft starter suitable for high power motor, its control circuit and different control modes.