1、注意五金塑料件振動盤電壓大小要求：

國家標準(zhun)規定(ding)(ding)，并聯(lian)電(dian)(dian)容器工(gong)頻(pin)長時(shi)刻過電(dian)(dian)壓值zui多不超(chao)越1.1倍(bei)額定(ding)(ding)電(dian)(dian)壓。關于大中型異步變頻(pin)振(zhen)動盤考慮到確保必定(ding)(ding)的補償效果，而又(you)會出(chu)現較高過電(dian)(dian)壓，這時(shi)可選用壓敏(min)器件限(xian)制過電(dian)(dian)壓。

2、注意振動(dong)盤維持(chi)電壓時刻要求：

關于需(xu)主(zhu)動(dong)投(tou)切(qie)的(de)(de)(de)變(bian)頻振動(dong)盤，或(huo)可(ke)逆運轉(zhuan)的(de)(de)(de)變(bian)頻振動(dong)盤，從正轉(zhuan)狀(zhuang)態到(dao)反轉(zhuan)狀(zhuang)態的(de)(de)(de)過渡時(shi)(shi)(shi)刻(ke)內，電容(rong)(rong)器的(de)(de)(de)端電壓(ya)必(bi)須降到(dao)額定峰值(初始值)電壓(ya)的(de)(de)(de)10%以下，不然由于自(zi)勵磁的(de)(de)(de)添加(jia)，變(bian)頻振動(dong)盤的(de)(de)(de)端電壓(ya)將升高到(dao)不能允許的(de)(de)(de)程度(du)。當(dang)選(xuan)用主(zhu)動(dong)投(tou)切(qie)時(shi)(shi)(shi)，投(tou)、切(qie)時(shi)(shi)(shi)刻(ke)間隔(ge)的(de)(de)(de)時(shi)(shi)(shi)限應(ying)大(da)于或(huo)等于電容(rong)(rong)器放電時(shi)(shi)(shi)刻(ke)。

3、注意振動盤(pan)避免發作(zuo)自勵磁(ci)和(he)諧振：

為避免被補(bu)償(chang)變(bian)頻(pin)振動盤(pan)發(fa)作自(zi)勵磁(ci)的(de)(de)情況發(fa)作，就地補(bu)償(chang)的(de)(de)電(dian)(dian)(dian)容(rong)器容(rong)量(liang)選用應盡量(liang)不過(guo)補(bu)。由于(yu)變(bian)頻(pin)振動盤(pan)堵截電(dian)(dian)(dian)源后，其轉速不能(neng)當即降為零(ling)，電(dian)(dian)(dian)容(rong)器對(dui)變(bian)頻(pin)振動盤(pan)繞組放(fang)電(dian)(dian)(dian)，使(shi)變(bian)頻(pin)電(dian)(dian)(dian)機(ji)得到(dao)勵磁(ci)，有可能(neng)造(zao)成(cheng)短時(shi)過(guo)電(dian)(dian)(dian)壓。