首页>
外国专利>
Protective device for a feedback controlled engine starting system for phasing - asynchronous motors
Protective device for a feedback controlled engine starting system for phasing - asynchronous motors
展开▼
机译:用于相位控制的反馈控制发动机起动系统的保护装置-异步电动机
展开▼
页面导航
摘要
著录项
相似文献
摘要
The starting circuit protects a single-phase asynchronous motor main and starting windings during starting from overload if the rotor fails to rotate. A PTC resistor is connected in series with the starting winding across the supply and its increase in resistance protects the winding during the motor starting phase. When the resistor reaches its highest permissible temperature, it operates a thermally triggered circuit breaker which cuts out the supply to both the main and the starting windings. The PTC resistor consists of a flat disc between two electrodes. The circuit breaker lies in thermal contact with one of these electrodes. The whole circuit is conveniently contained in a single housing.
展开▼