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023海洋之星
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樓主  發(fā)表于: 2024-09-16 11:37
基本參數(來(lái)自說(shuō)明書(shū)):
  (1)  電機:4.4kw 三相380V,額定電流16.5A。
(2)配套驅動(dòng)器:額定輸入電流12A,額定輸出電流16.5A,最大輸出電流41.25A。



問(wèn)題1:按照說(shuō)明書(shū),4.4kw 三相380V,線(xiàn)纜推薦3×5.27,這個(gè)線(xiàn)徑選取依據是那個(gè)電流參數呢?    4.4kw電機,這個(gè)線(xiàn)徑怎么感覺(jué)有點(diǎn)大呢? 況且推薦進(jìn)線(xiàn)側斷路器  20A,線(xiàn)徑為啥這么大。

問(wèn)題2:線(xiàn)徑5.27、額定電流40A左右,難道是按照驅動(dòng)器最大輸出電流設計?   可是驅動(dòng)器輸入側的線(xiàn)徑,為啥按輸出側設計,而不是按照輸入側呢?

問(wèn)題3:驅動(dòng)器額定輸入電流  和 額定輸出電流不相等,那么 輸入側的功率  和輸出側功率 也不相等,是否存在功率不守恒呢?況且是輸入側<輸出側,怎么解釋呢?

問(wèn)題4:驅動(dòng)器最大輸出電流,這個(gè)應該是考慮過(guò)載能力。那假設 驅動(dòng)器工作時(shí)  達到了最大電流,那此時(shí)輸入電流 是什么情況呢?相應增大?增大到多少呢?
[ 此帖被023海洋之星在2024-09-17 10:45重新編輯 ]

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