How to solve the loss of excitation

The generator is not a long time, leading to the factory with the core remanence lost excitation coil can not be established due magnetic field, when the engine is running properly, but unable to pay electricity, such phenomenon new machine. Or long-term crew not more.

Treatment methods:
1) Excitation button click exciting button
2) non-excitation button with battery its magnetization
3) with a light bulb load into overdrive for a few seconds.

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