发电厂厂用低压断路器选用中的几个重点问题

Discussion on Selection of Low Voltage Circuit Breaker at Power Plant

扼要阐述了与低压断路器选型有关的某些术语、技术性能和参数。在此基础上,对涉及低压断路器选型的额定短路分断能力,过载、短路保护特性,短路故障回路功率因数对断路器分断能力的影响,使用中降容等问题,进行了重点说明和讨论。

This paper described some terms, technical performance and parameters related to the selection of low voltage circuit breaker. Based on it, a few questions were talked and discussed, such as rated short circuit breaking capacity, overload and short circuit protection feature, influense of fault short circuit power factor to breaking capacity of circuit breaker, capacity reduction in use.