How to check the connection correctness of "l", "n", "s" lines is discussed on the shortcomings of on-loadtest 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。
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This paper mainly discusses the two operating points for the test of synchronous machines, no-load point and zero power loading point.