This paper discusses production of excitation surge and the excitation surge effects on a transformer.

主要讨论了励磁涌流的产生和其对变压器的影响。

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At the secondary side of the transformer there is a varistor and Zener diodes which act to stepwise reduce the surge pulse.

在变压器的次级一侧有一个变阻器和齐纳二极管，它们起到进一步减小冲击脉冲的作用。

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This paper introduced the new IEC60076 -4 test guidance of lightning surge and switching surge for power transformer and reactor, which is the new edition of IEC722 (1982).

介绍了新的IEC60076—4电力变压器和电抗器雷电冲击和操作冲击试验导则，它是IEC722（1982）的新版，比原导则增加与完善了新的内容。

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There seems to have been a sequence of technical faults (reportedly, a problematic transformer, false alarms, failed signals and an apparent power surge) at about the same time in a small area of the power grid serving London.

ECONOMIST: Power industry