首页>
外国专利>
PROTECTIVE RELAY APPARATUS FOR DETECTING HIGH-IMPEDANCE GROUND FAULTS
PROTECTIVE RELAY APPARATUS FOR DETECTING HIGH-IMPEDANCE GROUND FAULTS
展开▼
机译:用于检测高阻接地故障的保护继电器装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A protective relay for detecting high-impedance ground faults on a three-wire distribution system. The protective relay operates independently of the current in the ground path by using the positive and negative sequence currents to detect a fallen conductor. The ratio of the negative sequence to positive sequence current is calculated and when this ratio exceeds a predetermined value, a trip signal is produced.
展开▼