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發(fā)布日期:2022-04-18 點(diǎn)擊率:52
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電動(dòng)機(jī)所帶負(fù)載過(guò)重時(shí),轉(zhuǎn)子轉(zhuǎn)速下降,電動(dòng)機(jī)的轉(zhuǎn)差率增大,這時(shí)電動(dòng)機(jī)的定子電流將增大。當(dāng)定子電流較長(zhǎng)時(shí)間超過(guò)額定值運(yùn)行時(shí),發(fā)熱量的增加將使電動(dòng)機(jī)溫度升高,使絕緣過(guò)熱加速老化,甚至于燒毀電動(dòng)機(jī)。
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