1、注意振動盤電壓大小要求：

國家標準規(gui)定，并聯電(dian)容器工頻(pin)長(chang)時(shi)刻過電(dian)壓(ya)值zui多不(bu)超越(yue)1.1倍額定電(dian)壓(ya)。關于大(da)中型異步(bu)變(bian)頻(pin)振動盤(pan)考慮到(dao)確保必定的(de)補(bu)償(chang)效(xiao)果，而又會出(chu)現較(jiao)高過電(dian)壓(ya)，這時(shi)可選用壓(ya)敏(min)器件限制過電(dian)壓(ya)。

2、注意振(zhen)動盤維持電(dian)壓時刻要求：

關(guan)于(yu)需主動(dong)(dong)(dong)投(tou)切(qie)的(de)(de)(de)(de)變頻振(zhen)動(dong)(dong)(dong)盤，或可逆運轉(zhuan)的(de)(de)(de)(de)變頻振(zhen)動(dong)(dong)(dong)盤，從正轉(zhuan)狀態到反轉(zhuan)狀態的(de)(de)(de)(de)過(guo)渡時刻內，電(dian)容器的(de)(de)(de)(de)端(duan)電(dian)壓(ya)必(bi)須降到額定峰(feng)值(zhi)(初始值(zhi))電(dian)壓(ya)的(de)(de)(de)(de)10%以下，不然由于(yu)自勵磁(ci)的(de)(de)(de)(de)添加，變頻振(zhen)動(dong)(dong)(dong)盤的(de)(de)(de)(de)端(duan)電(dian)壓(ya)將(jiang)升高(gao)到不能允許的(de)(de)(de)(de)程度。當(dang)選用主動(dong)(dong)(dong)投(tou)切(qie)時，投(tou)、切(qie)時刻間隔的(de)(de)(de)(de)時限應大于(yu)或等(deng)于(yu)電(dian)容器放電(dian)時刻。

3、注意振(zhen)動盤避(bi)免發作自勵磁和諧振(zhen)：

為(wei)避免被補償(chang)變頻(pin)(pin)振(zhen)動盤(pan)(pan)發作(zuo)自勵磁的(de)情況發作(zuo)，就地補償(chang)的(de)電(dian)(dian)(dian)(dian)容(rong)(rong)器容(rong)(rong)量選用應盡量不(bu)(bu)過補。由于變頻(pin)(pin)振(zhen)動盤(pan)(pan)堵截電(dian)(dian)(dian)(dian)源后，其轉速(su)不(bu)(bu)能當即降為(wei)零，電(dian)(dian)(dian)(dian)容(rong)(rong)器對變頻(pin)(pin)振(zhen)動盤(pan)(pan)繞組放(fang)電(dian)(dian)(dian)(dian)，使變頻(pin)(pin)電(dian)(dian)(dian)(dian)機得到勵磁，有可能造成短時過電(dian)(dian)(dian)(dian)壓。