2) single-pole-to-earth fault
单极对地短路
3) single-phase earth fault
单相接地短路
1.
The characteristics of the zero-sequence voltage,zero-sequence current and zero-sequence power during a single-phase earth fault in a solidly earthed neutral system are expounded;the principles of conventional zero-sequence directional protection and microcomputer based zero-sequence directional protection are compared and analyzed.
阐述了中性点直接接地系统单相接地短路时零序电压、零序电流、零序功率的特点,对常规零序方向保护和微机型零序方向保护的原理进行了对比分析,指出LG-12型功率方向继电器以及WXH-11型、CSL-160型零序方向保护中零序功率方向的正确接线方式。
4) single-phase earthing short circuit
单相接地短路
1.
The calculations of short circuit current,contact voltage and step voltage when the Ling ao nuclear power plant 500kV switchgear station occurs single-phase earthing short circuit are introduced.
主要介绍了广东岭澳核电站500 kV开关站母线发生单相接地短路时,站内短路电流、接触电压和跨步电压差的计算。
5) single phase short circuit
单相短路
1.
On the basis of investigation in the scene of the faults, data analysis, calculation and study, the causes of the stator single phase short circuit faults of generating unit 2 of power plant in Shajiao C,Guangzhou, were analyzed.
在现场调研和资料分析、计算、研究的基础上，分析了广州沙角Ｃ电厂２ 号机组定子单相短路事故的原因。
补充资料：单相短路电流
分子式：
CAS号：
性质：一相导体与保护导体发生短路时流经相-零回路的电流。单相短路电流是评价和设计保护接零系统设计的基本要素。保护接零系统的单相短路电流不应小于低压断路器瞬时动作或短延时动作过电流脱扣器的整定电流的1.5倍；不应小于低压熔断器熔体额定电流的4倍。
CAS号：
性质：一相导体与保护导体发生短路时流经相-零回路的电流。单相短路电流是评价和设计保护接零系统设计的基本要素。保护接零系统的单相短路电流不应小于低压断路器瞬时动作或短延时动作过电流脱扣器的整定电流的1.5倍；不应小于低压熔断器熔体额定电流的4倍。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条