摘要
为了保证断路器脱扣特性与断路器承受内热应力和电动应力的能力一致,制造厂在确定脱扣特性时应考虑瞬时动作电流整定范围上限、延时保护特性等几方面的问题,以满足国家标准的要求。
In order to assure the trip feature of the circuit breaker and the capabilities of internal thermal stress and electrodynamic stress in uniformity, the manufacturer should take considerations of the upper limmit for instantaneous action current setting range, delay protective feature etc several aspects while in determining trip feature, so as to meet the requirements of the national standard.
关键词
断路器
过电流保护特性
长延时
短延时
瞬时
circuit breaker
over-current protective feature
long delay
short delay
instantaneous
