井下低压电网漏电保护的分析研究

Analyses of Leakage Protection of Underground Low-tension Network

为了摸清国内外漏电保护装置的现状,总结经验教训,达到取长补短的目的,我们便从这些漏电保护装置的性能分析入手,着重进行摸拟试验和理论分析,在此基础上,再结合实际情况,对我国今后的漏电保护工作,提出一些初浅的看法。一、国产检漏继电器的性能分析这里仅就其中的三种(JY82型、JL80型和JJKB30型)进行性能分析,尽管这些产品在结构和性能上已有某些方面的改进和提高,但在一些带根本性问题上仍没有多大变化。

-This paper consists of three parts: l. analysis of leakage detection relays made in this country including functions of JY 82 type, JL 80 type and JJKB 30 type relays and their merits and disadvantages; 2. evaluation of functions of leakage protection devices abroad, mainly those made in West Germany and UK; 3. discussion of grounding with neutral point.