摘要
本文论证了断相运行是烧坏三相异步电动机的主要原因。分析了热继电器对断相保护的不可靠性。提出了几种断相保护方案，论证了其可行性、可靠性、先进性、经济性。
This paper demonstrates the major cause which leads to the burn out of a three phase asynchronous motor with one phase failure. The paper analyses why thermal relay protection is unreliabale with one phase failure. At the same time it provides several protection schemes for one phase failure and proves that these schemes are feasible, reliable, advanced and economical.
出处
《山东科学》
CAS
1997年第3期19-26,共8页
Shandong Science
关键词
三相
异步电动机
热继电器
断相
保护
过载
短路
three phase asynchronous motor
thermal relay, a phase power off
protection, overload
short circuit
