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1·The leakage current must be returned to the source, it will flow through any available thermocouple conductor, line pipe, pipeline, water or earth went to the source.

漏泄电流必需前往至源极，它将流经任何热电偶可用的导体、线管、管道、水或大地前往到源极。

2·The value of this current is limited by earth leakage resistance of the return circuit versus earth.

该电流值受回路对地的接地泄漏电阻限制。

3·Three methods to judge the electric leakage of flange are put forward, that is, current direction method, pipeline current method and earth resistance method.

就绝缘法兰是否漏电，提出了电流方向法、管道电流法及接地电阻法等判断方法。