1、注意振動盤電壓大小要求：

國家標(biao)準(zhun)規定(ding)，并聯電容器(qi)工(gong)頻(pin)長時(shi)(shi)刻過電壓(ya)(ya)值zui多(duo)不超越1.1倍額定(ding)電壓(ya)(ya)。關于大中型(xing)異步變頻(pin)振動盤考慮到(dao)確(que)保必(bi)定(ding)的補償(chang)效果(guo)，而又(you)會(hui)出現(xian)較高(gao)過電壓(ya)(ya)，這時(shi)(shi)可(ke)選用壓(ya)(ya)敏器(qi)件限制(zhi)過電壓(ya)(ya)。

2、注意振動盤(pan)維持(chi)電壓時刻要求：

關(guan)于需主(zhu)動(dong)(dong)投(tou)切(qie)的(de)(de)(de)變(bian)(bian)頻(pin)振(zhen)動(dong)(dong)盤，或(huo)可(ke)逆運轉(zhuan)的(de)(de)(de)變(bian)(bian)頻(pin)振(zhen)動(dong)(dong)盤，從正轉(zhuan)狀態到反轉(zhuan)狀態的(de)(de)(de)過渡時刻內，電(dian)容(rong)器(qi)(qi)的(de)(de)(de)端電(dian)壓(ya)必(bi)須降(jiang)到額定峰值(zhi)(zhi)(初(chu)始值(zhi)(zhi))電(dian)壓(ya)的(de)(de)(de)10%以下，不(bu)然(ran)由于自(zi)勵磁的(de)(de)(de)添加，變(bian)(bian)頻(pin)振(zhen)動(dong)(dong)盤的(de)(de)(de)端電(dian)壓(ya)將升高(gao)到不(bu)能允許的(de)(de)(de)程度。當選用主(zhu)動(dong)(dong)投(tou)切(qie)時，投(tou)、切(qie)時刻間隔的(de)(de)(de)時限應大于或(huo)等于電(dian)容(rong)器(qi)(qi)放電(dian)時刻。

3、注(zhu)意振動盤(pan)避(bi)免發作自勵磁和諧振：

為避免被補(bu)償變頻(pin)振(zhen)動(dong)(dong)盤(pan)發作自(zi)勵磁的(de)情(qing)況發作，就(jiu)地(di)補(bu)償的(de)電(dian)(dian)(dian)容(rong)(rong)器容(rong)(rong)量選用應盡(jin)量不過補(bu)。由于(yu)變頻(pin)振(zhen)動(dong)(dong)盤(pan)堵截電(dian)(dian)(dian)源(yuan)后，其轉(zhuan)速不能當即降(jiang)為零，電(dian)(dian)(dian)容(rong)(rong)器對(dui)變頻(pin)振(zhen)動(dong)(dong)盤(pan)繞組(zu)放電(dian)(dian)(dian)，使變頻(pin)電(dian)(dian)(dian)機得(de)到勵磁，有可能造成短時過電(dian)(dian)(dian)壓。