| 多点接地时出现的异常现象 |
| 添加时间：2018/6/25 15:16:06 浏览次数： |
| 多点接地时出现的异常现象 Abnormal phenomena in multipoint grounding (1)在铁芯中产生涡流，铁损增加，铁芯局部过热。 (1) eddy current is generated in the iron core, and the iron loss increases, and the iron core is overheated locally. (2)多点接地严重时，又较长时间未处理，变压器连续运行将导致油及绕组也过热，使油纸绝缘逐渐老化。会引起铁芯叠片两片绝缘层老化而脱落，将引起更大的铁芯过热，铁芯将烧毁。 (2) when the multi point earthing is serious, and the long time is not yet processed, the continuous operation of the transformer will cause the oil and winding to overheat, so that the oil paper insulation will gradually become old. It will cause the core lamination of two insulation layers to fall off and will cause more iron core to overheat and iron core will burn down. (3)较长时间多点接地，使油浸变压器油劣化而产生可燃性气体，使气体继电器动作。 (3) long time multi point grounding causes the oil immersed transformer oil to deteriorate and produce inflammable gas, so that the gas relay acts. (4)因铁芯过热使器身中木质垫块及夹件碳化。 (4) because of the overheating of the iron core, the wood block and the clamping parts in the body are carbonized. (5)严重的多点接地会使接地线烧断，使变压器失去了正常的一点接地，后果不堪设想。 (5) severe multi point grounding will cause the grounding wire to burn down, which will cause the transformer to lose normal grounding and the consequences will be disastrous. (6)多点接地也会引起放电现象。 (6) multi point grounding will also cause the discharge phenomenon. |
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