1、注意振動盤電壓大小要求：

國家標準規定(ding)，并聯電(dian)(dian)容器工頻長時(shi)刻過電(dian)(dian)壓(ya)(ya)值zui多不超越1.1倍額定(ding)電(dian)(dian)壓(ya)(ya)。關(guan)于大(da)中(zhong)型異步變頻振動盤考(kao)慮到確保必定(ding)的補償效(xiao)果，而又會出(chu)現(xian)較高過電(dian)(dian)壓(ya)(ya)，這時(shi)可選用壓(ya)(ya)敏器件限制過電(dian)(dian)壓(ya)(ya)。

2、注(zhu)意振動盤維持電壓時刻(ke)要求：

關于(yu)需主(zhu)動投(tou)(tou)切的(de)(de)(de)變(bian)頻振(zhen)動盤(pan)，或可逆(ni)運轉(zhuan)的(de)(de)(de)變(bian)頻振(zhen)動盤(pan)，從正轉(zhuan)狀態(tai)到反轉(zhuan)狀態(tai)的(de)(de)(de)過渡時刻(ke)(ke)內，電(dian)(dian)(dian)容(rong)器的(de)(de)(de)端電(dian)(dian)(dian)壓(ya)必須降到額定峰值(zhi)(初始(shi)值(zhi))電(dian)(dian)(dian)壓(ya)的(de)(de)(de)10%以下，不然由于(yu)自勵磁的(de)(de)(de)添加，變(bian)頻振(zhen)動盤(pan)的(de)(de)(de)端電(dian)(dian)(dian)壓(ya)將升高到不能允許的(de)(de)(de)程度。當選用主(zhu)動投(tou)(tou)切時，投(tou)(tou)、切時刻(ke)(ke)間隔的(de)(de)(de)時限應大于(yu)或等于(yu)電(dian)(dian)(dian)容(rong)器放電(dian)(dian)(dian)時刻(ke)(ke)。

3、注意振動盤避免發作自勵磁(ci)和諧振：

為避(bi)免被補償變(bian)頻振(zhen)動(dong)盤(pan)發作自勵磁(ci)的情況發作，就地補償的電(dian)(dian)容器容量選用應盡量不過補。由于變(bian)頻振(zhen)動(dong)盤(pan)堵截電(dian)(dian)源后，其轉速不能(neng)當即(ji)降為零(ling)，電(dian)(dian)容器對變(bian)頻振(zhen)動(dong)盤(pan)繞組(zu)放(fang)電(dian)(dian)，使變(bian)頻電(dian)(dian)機得到勵磁(ci)，有可能(neng)造成短時過電(dian)(dian)壓。