1、注意振動盤電壓大小要求：

國家(jia)標準規定，并聯電(dian)(dian)容器工頻長(chang)時刻過電(dian)(dian)壓(ya)值zui多不超越1.1倍額定電(dian)(dian)壓(ya)。關于大中型異步變頻振動盤考慮到確保必(bi)定的補償(chang)效果，而又會出現較高過電(dian)(dian)壓(ya)，這時可選用壓(ya)敏器件限制過電(dian)(dian)壓(ya)。

2、注意振動盤維持電壓時刻要求：

關于需主(zhu)動(dong)(dong)投切(qie)的(de)(de)(de)(de)(de)(de)變(bian)頻(pin)(pin)振(zhen)動(dong)(dong)盤(pan)，或可逆運轉的(de)(de)(de)(de)(de)(de)變(bian)頻(pin)(pin)振(zhen)動(dong)(dong)盤(pan)，從正轉狀態到(dao)反轉狀態的(de)(de)(de)(de)(de)(de)過渡(du)時(shi)刻(ke)(ke)內，電容器的(de)(de)(de)(de)(de)(de)端電壓(ya)必須降(jiang)到(dao)額定峰值(初(chu)始值)電壓(ya)的(de)(de)(de)(de)(de)(de)10%以下，不(bu)然由于自勵(li)磁的(de)(de)(de)(de)(de)(de)添加，變(bian)頻(pin)(pin)振(zhen)動(dong)(dong)盤(pan)的(de)(de)(de)(de)(de)(de)端電壓(ya)將(jiang)升(sheng)高到(dao)不(bu)能(neng)允許的(de)(de)(de)(de)(de)(de)程度(du)。當選用主(zhu)動(dong)(dong)投切(qie)時(shi)，投、切(qie)時(shi)刻(ke)(ke)間隔(ge)的(de)(de)(de)(de)(de)(de)時(shi)限應大于或等于電容器放電時(shi)刻(ke)(ke)。

3、注意振動盤(pan)避免發作自勵磁和(he)諧振：

為(wei)避免被補(bu)(bu)償(chang)變頻振動(dong)盤(pan)(pan)發作自勵磁(ci)的情況發作，就地(di)補(bu)(bu)償(chang)的電(dian)(dian)(dian)(dian)(dian)容(rong)器容(rong)量選用應盡量不過補(bu)(bu)。由于變頻振動(dong)盤(pan)(pan)堵截電(dian)(dian)(dian)(dian)(dian)源后，其轉速不能當(dang)即(ji)降為(wei)零，電(dian)(dian)(dian)(dian)(dian)容(rong)器對變頻振動(dong)盤(pan)(pan)繞組放(fang)電(dian)(dian)(dian)(dian)(dian)，使變頻電(dian)(dian)(dian)(dian)(dian)機(ji)得到勵磁(ci)，有可能造成短時過電(dian)(dian)(dian)(dian)(dian)壓(ya)。