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在低压电机电子保护器中,特别是断相保护的检测元件广泛采用MXO-2000型磁环。就磁环磁路状态来讲,可分为非饱和型和饱和型两种。本刊1979年6期和1980年2期先后刊登的保护器大都是饱和型的。本文仅对其工作原理及有关计算问题加以说明。
In the low-voltage motor electronic protectors, especially the detection of phase-failure protection widely used MXO-2000-type magnetic ring. Magnetic ring state on the state, can be divided into two types of non-saturation and saturation. Articles published in 1979 6 and 1980 2 has published the protectors are mostly saturated type. This article only describes its working principle and related computing issues.