1、注意五金塑料件振動盤電壓大小要求：

國家標準規(gui)定(ding)(ding)，并聯電(dian)容器(qi)工(gong)頻(pin)長時刻過電(dian)壓值zui多不超越1.1倍(bei)額定(ding)(ding)電(dian)壓。關于大中型異步變頻(pin)振(zhen)動盤考慮到確保(bao)必定(ding)(ding)的補償效(xiao)果，而又會出現(xian)較高過電(dian)壓，這時可選用壓敏器(qi)件限制過電(dian)壓。

2、注(zhu)意振動盤維持電(dian)壓時(shi)刻要求：

關于(yu)需主(zhu)動(dong)(dong)投切的(de)變(bian)(bian)頻(pin)(pin)振動(dong)(dong)盤(pan)，或可(ke)逆(ni)運(yun)轉的(de)變(bian)(bian)頻(pin)(pin)振動(dong)(dong)盤(pan)，從正轉狀態(tai)到反(fan)轉狀態(tai)的(de)過(guo)渡時(shi)刻內，電(dian)容(rong)器(qi)的(de)端(duan)電(dian)壓必須降到額定峰值(初始(shi)值)電(dian)壓的(de)10%以下，不(bu)然由于(yu)自勵磁的(de)添加，變(bian)(bian)頻(pin)(pin)振動(dong)(dong)盤(pan)的(de)端(duan)電(dian)壓將(jiang)升(sheng)高到不(bu)能允許的(de)程(cheng)度。當選用主(zhu)動(dong)(dong)投切時(shi)，投、切時(shi)刻間隔的(de)時(shi)限應大(da)于(yu)或等于(yu)電(dian)容(rong)器(qi)放電(dian)時(shi)刻。

3、注(zhu)意(yi)振動(dong)盤避免發作自勵磁和(he)諧振：

為避免被補(bu)償變(bian)頻振(zhen)(zhen)動(dong)盤發(fa)作自勵磁(ci)的情(qing)況發(fa)作，就地(di)補(bu)償的電(dian)(dian)容(rong)器(qi)(qi)容(rong)量選(xuan)用應盡量不過補(bu)。由于變(bian)頻振(zhen)(zhen)動(dong)盤堵截電(dian)(dian)源后，其轉速不能當即降為零，電(dian)(dian)容(rong)器(qi)(qi)對變(bian)頻振(zhen)(zhen)動(dong)盤繞(rao)組(zu)放電(dian)(dian)，使變(bian)頻電(dian)(dian)機得到勵磁(ci)，有可能造成短時(shi)過電(dian)(dian)壓。