How to check the connection correctness of "l", "n", "s" lines is discussed on the shortcomings of on-load test for zero-sequence power direction component.
针对当前零序功率方向元件带负荷试验的不足之处，讨论了如何检查“L”、“N”及“S”线的接线正确性。
This device use the principle of additional DC power supply in main feeding switch, and use the principle of direction of zero sequence power in branch feeding switch.
该装置在总馈电开关处的漏电保护装置使用附加直流电源原理，在分支馈电开关处的漏电保护装置使用零序功率方向式保护原理。
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。
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。
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