The Characteristic of middle impedance relay was elaborated, as an example of bus differentialprotection of RADSS type.
以RADSS型母线差动保护为例，阐述了中阻抗型差动继电器的原理特点。
2
The scheme includes the transverse differentialprotection, the directional relay action on negative sequence power of fault component and the incomplete differentialprotection.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
3
Differentialrelay is the key protection for power transformer.