1、注意振動盤電壓大小要求：

國家標準規定(ding)，并聯電(dian)(dian)容器工頻長(chang)時(shi)刻(ke)過電(dian)(dian)壓(ya)(ya)(ya)值zui多不超越1.1倍(bei)額(e)定(ding)電(dian)(dian)壓(ya)(ya)(ya)。關于大中型異步變頻振動盤考慮到(dao)確保必定(ding)的(de)補償效果，而又會出(chu)現較(jiao)高過電(dian)(dian)壓(ya)(ya)(ya)，這時(shi)可選用壓(ya)(ya)(ya)敏器件限制(zhi)過電(dian)(dian)壓(ya)(ya)(ya)。

2、注意振(zhen)動盤維持電壓時(shi)刻要求：

關于(yu)(yu)需主(zhu)動(dong)(dong)投(tou)切的(de)(de)變頻(pin)振動(dong)(dong)盤(pan)，或(huo)可逆運轉(zhuan)(zhuan)的(de)(de)變頻(pin)振動(dong)(dong)盤(pan)，從(cong)正轉(zhuan)(zhuan)狀態到(dao)反(fan)轉(zhuan)(zhuan)狀態的(de)(de)過渡(du)時(shi)(shi)刻內，電(dian)(dian)容器(qi)的(de)(de)端電(dian)(dian)壓(ya)必須降到(dao)額定峰值(初始值)電(dian)(dian)壓(ya)的(de)(de)10%以下，不然由于(yu)(yu)自勵磁的(de)(de)添加，變頻(pin)振動(dong)(dong)盤(pan)的(de)(de)端電(dian)(dian)壓(ya)將升高到(dao)不能允許的(de)(de)程度。當選用主(zhu)動(dong)(dong)投(tou)切時(shi)(shi)，投(tou)、切時(shi)(shi)刻間(jian)隔的(de)(de)時(shi)(shi)限應大于(yu)(yu)或(huo)等于(yu)(yu)電(dian)(dian)容器(qi)放電(dian)(dian)時(shi)(shi)刻。

3、注(zhu)意振(zhen)動盤避免發(fa)作自勵磁和諧振(zhen)：

為避免被補償(chang)變頻振動(dong)盤(pan)發(fa)作(zuo)自勵(li)磁的情況發(fa)作(zuo)，就地補償(chang)的電(dian)(dian)容器容量(liang)(liang)選(xuan)用(yong)應盡量(liang)(liang)不過(guo)補。由于(yu)變頻振動(dong)盤(pan)堵截電(dian)(dian)源后，其(qi)轉速不能當即降為零，電(dian)(dian)容器對變頻振動(dong)盤(pan)繞組放電(dian)(dian)，使變頻電(dian)(dian)機得到勵(li)磁，有(you)可能造成短(duan)時過(guo)電(dian)(dian)壓。