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liuxianhua
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12樓  發(fā)表于: 2011-03-30 20:05
老早時(shí)用過(guò)，是用電阻箱，而不是單用一個(gè)電阻；現在都不知道有沒(méi)有廠(chǎng)家生產(chǎn)，有的話(huà)多大的電機就有配套的的降壓電阻箱。如果沒(méi)有的話(huà)，還一定要串電阻啟動(dòng)，就只能自己計算了！把電拖的書(shū)找出來(lái)看下，不難的。
etdssdabb
只有學(xué)而知之，沒(méi)有生而知之
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13樓  發(fā)表于: 2011-04-01 12:56
是的，而且用的是鑄鐵電阻，有個(gè)經(jīng)驗公式。
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