1、注意振動盤電壓大小要求：

國家標(biao)準規定，并聯電(dian)(dian)容器工頻長時(shi)刻(ke)過(guo)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(xing)異步(bu)變頻振動盤考(kao)慮(lv)到確保必定的補償效果，而又會出現較高過(guo)電(dian)(dian)壓(ya)，這時(shi)可選用壓(ya)敏器件限制過(guo)電(dian)(dian)壓(ya)。

2、注(zhu)意振動(dong)盤(pan)維持電(dian)壓時刻要求：

關(guan)于需主(zhu)動(dong)投(tou)切的(de)(de)變(bian)頻(pin)振(zhen)(zhen)動(dong)盤(pan)，或可逆運轉(zhuan)的(de)(de)變(bian)頻(pin)振(zhen)(zhen)動(dong)盤(pan)，從正轉(zhuan)狀態(tai)到(dao)反轉(zhuan)狀態(tai)的(de)(de)過渡(du)時(shi)(shi)(shi)刻(ke)內，電(dian)容器的(de)(de)端電(dian)壓必須降到(dao)額(e)定(ding)峰(feng)值(初始值)電(dian)壓的(de)(de)10%以(yi)下，不(bu)然由于自勵磁的(de)(de)添加(jia)，變(bian)頻(pin)振(zhen)(zhen)動(dong)盤(pan)的(de)(de)端電(dian)壓將升高到(dao)不(bu)能允許的(de)(de)程度。當選用主(zhu)動(dong)投(tou)切時(shi)(shi)(shi)，投(tou)、切時(shi)(shi)(shi)刻(ke)間隔的(de)(de)時(shi)(shi)(shi)限(xian)應大于或等于電(dian)容器放電(dian)時(shi)(shi)(shi)刻(ke)。

3、注意振動盤避(bi)免發作自勵磁和諧振：

為(wei)避(bi)免被(bei)補償變(bian)頻振(zhen)動盤(pan)發(fa)作自勵磁的(de)情況發(fa)作，就地補償的(de)電(dian)(dian)(dian)容(rong)器(qi)容(rong)量選用應盡(jin)量不過補。由于變(bian)頻振(zhen)動盤(pan)堵截(jie)電(dian)(dian)(dian)源后，其轉速不能(neng)當即降為(wei)零，電(dian)(dian)(dian)容(rong)器(qi)對變(bian)頻振(zhen)動盤(pan)繞組放電(dian)(dian)(dian)，使(shi)變(bian)頻電(dian)(dian)(dian)機(ji)得到勵磁，有可(ke)能(neng)造(zao)成短時過電(dian)(dian)(dian)壓。