Start up excitation of biogas generator is a professional term in the field of generator. It refers to the working process of voltage set up by generator from idle state. Sometimes the generator can not be excited. How to check the cause of the fault?

側刀閘、起勵電源開關是否均合上。然后再檢查是否有起勵電源，PT保險是否熔斷，PT回路的接線是否松動。

Whether the side knife switch and excitation power switch are all closed. Then check whether there is a build-up excitation power supply, whether the PT fuse is blown, and whether the wiring of the PT circuit is loose.

如果這些都正常，就需要另換一個通道起勵。如果能夠正常起勵了那么就說明是調節器通道內的原因;如果沼氣發電機組還是無法正常起勵，則應當檢查起勵回路、脈沖公共回路、可控硅整流器、轉子回路是否有接地或者短路等。

If all of these are normal, another channel is needed to make excitation. If the excitation can be started normally, it indicates that it is the reason in the channel of the regulator; if the biogas generator set is still unable to start excitation normally, check whether there is grounding or short circuit in the excitation circuit, pulse common circuit, silicon controlled rectifier and rotor circuit.

如果調節器沒有發出“起勵失敗”的信號，但沼氣發電機組仍然無法自動起勵，那么可以在勵磁盤附近起勵或者遠方人工起勵如果遠近方都無法人工起勵，應當檢查發電機組頻率是否沒有達到45HZ以上。

If the regulator doesn't send out the signal of "excitation failure", but the biogas generator set still can't start excitation automatically, then the excitation can be started near the excitation disk or the remote manual excitation can be started. If the manual excitation cannot be started in the far and near places, it should be checked whether the frequency of the generator set does not reach more than 45Hz.

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