摘要
本文介绍了一种带人为旁路接地,有三级选择性的漏电保护系统。该系统由磁力起动器内装DXL-660C型漏电保护单元、分支馈电开关内装DXL—660Q型漏电保护单元及与总馈电开关配套的BJJ_4隔爆型带人为旁路接地总桥漏继电器所组成。具有安全、可靠及选择性好等优点。特别适合于老系统原有装置的改造。
This article introdures a kind of leakage protection system with man-made by pass earthing and three-stage selectivity. This system consists of huilt-in model DXL-600C leakage protection unit in magnetic stanter, built-in model DXL-660(?) teakage protection unit in branh feeding switch and the main feeding switch completed with type BJJ5 flame proof main leakage deterling relay with man made hy-pass earthing. It posses advantages of excellent safely, reliahitity and setertivity and it is particularly snitable to the modifieation of the original device in existing system.
出处
《煤矿机电》
北大核心
1992年第4期5-8,共4页
Colliery Mechanical & Electrical Technology
