1.
directioal earth-leakage relay
对地漏电方向继电器
2.
three-phase power directional relay
三相功率方向继电器
3.
The positive-sequence fault components based directional relay is a new type of unit for recognizing fault direction.
基于正序故障分量的方向继电器是一种新型故障方向判别元件。
4.
It mainly focuses on analysis and determining method of zero sequence power direction relay.
重点介绍零序功率方向继电器的分析及判定方法。
5.
Protection for these isolated systems has been a relatively simple task, which is carried out using over current directional relays with selectivity.
采用具有选择性的过电流方向继电器,对这种相互分隔直流系统的保护相对就简单。
6.
directional comparison microwave relay
方向比较微波继电器
7.
directional comparison carrier relay
方向比较载波继电器
8.
Analysis of Characteristics for Impedance Relay in Sudden Change Variable Grounding Direction
突变量接地方向阻抗继电器性能分析
9.
electronic valve type power directional relay
电子管功率定向继电器
10.
high speed directional overcurrent relay
高速定向过流继电器
11.
Remove relay by lifting straight up.
垂直向上地拆下继电器。
12.
single-phase directional short circuit relay
单相定向短路继电器
13.
voltage drop compensation directional relay
压降补偿式定向继电器
14.
induction type power directional relay
感应式功率定向继电器
15.
induction disc type directional relay
感应圆盘式定向继电器
16.
ectronic valve type power directional relay
电子管功率定向继电器;电子管式功率定向继电器
17.
There is no operative" voltage dead zone", and the definite directionality exists.
同时,继电器不存在动作的“电压死区”,具有明确的方向性。
18.
1-way repeater (includes telephone repeater). One or two line can be specified.
单向中继器（包括电话中继器）。可指定单线或双线。