How is the protection of the lightning arrester at the neutral point of the transformer carried out?

For transformers operating in a system with an effectively grounded neutral point, if the neutral point is not grounded, a lightning arrester should be installed at the neutral point. Similarly, for transformers operating in a system with a non-grounded neutral point, consideration should also be given to adding a lightning arrester at the neutral point. If the neutral point is grounded through a surge arrester, in order to eliminate the overvoltage that may occur at the end of the surge arrester, it is possible to install a lightning arrester in parallel with the surge arrester.

LuShan, est. 1975, is a Chinese professional manufacturer specializing in power transformers and reactors for 49 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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