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jiadian2468
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樓主  發(fā)表于: 2016-11-16 21:57
一臺引風(fēng)機250kw變頻器最開(kāi)始故障是欠壓，現場(chǎng)人說(shuō)在頻率上升到30赫茲后報欠壓，檢查整流模塊有個(gè)性能不好的，換后現在開(kāi)機頻率上升到42左右就報欠壓有時(shí)也報警f020.，，頻率低于30赫茲可以開(kāi)機，檢查變頻器也沒(méi)找到問(wèn)題，開(kāi)機檢測母線(xiàn)電壓正常，外面380v電源也沒(méi)問(wèn)題，請修過(guò)這問(wèn)題的高手幫幫忙  謝謝 ，，，，，，

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