摘要
针对旋转电机由于冷却系统故障或超高的环境温度等与电流无关的因素而引发的过高的温升 ,提供基于监控温度的原则对电机进行保护的热保护系统。该系统由一个特性变化的热检测器和一个关联的控制单元组成。IEC SC17B为此起草了一份产品标准IEC6 0 94 7 8《低压开关设备和控制设备 旋转电机内置式热保护控制单元》。
Thermal protection system which are based on the principle of monitoring the temperature of the protected parts provide a protection for rotating electrical machines against the excessive temperautre rise caused by faults in the cooling system or excessively high ambient temperature. The thermal protection system consists of a characteristic change thermal detector and an associated control unit. So IEC/SC17B drafted out a product standard which is IEC60947 8 《Low voltage switchgear and controlgear Control units for built in thermal protection for rotating electrical machines》.
出处
《低压电器》
2003年第3期54-56,共3页
Low Voltage Apparatus
