1、注意振動盤電壓大小要求：

國家標準規定(ding)，并聯電(dian)(dian)(dian)容器工(gong)頻長(chang)時刻過(guo)電(dian)(dian)(dian)壓值(zhi)zui多不超越(yue)1.1倍額(e)定(ding)電(dian)(dian)(dian)壓。關(guan)于大中型異步變頻振動盤考(kao)慮(lv)到確(que)保必(bi)定(ding)的補償(chang)效果，而又(you)會出現較高過(guo)電(dian)(dian)(dian)壓，這時可選用壓敏器件限制過(guo)電(dian)(dian)(dian)壓。

2、注意振(zhen)動盤維持(chi)電壓時(shi)刻要(yao)求(qiu)：

關于(yu)需主動投(tou)切的變(bian)(bian)頻(pin)振動盤(pan)(pan)，或(huo)可逆運轉(zhuan)的變(bian)(bian)頻(pin)振動盤(pan)(pan)，從(cong)正轉(zhuan)狀態到(dao)反(fan)轉(zhuan)狀態的過(guo)渡時刻(ke)內(nei)，電(dian)(dian)容(rong)器的端電(dian)(dian)壓(ya)必須降到(dao)額定峰值(zhi)(初始值(zhi))電(dian)(dian)壓(ya)的10%以下，不(bu)然(ran)由于(yu)自勵磁的添(tian)加，變(bian)(bian)頻(pin)振動盤(pan)(pan)的端電(dian)(dian)壓(ya)將升高到(dao)不(bu)能允許的程度(du)。當選用主動投(tou)切時，投(tou)、切時刻(ke)間(jian)隔的時限(xian)應大(da)于(yu)或(huo)等于(yu)電(dian)(dian)容(rong)器放(fang)電(dian)(dian)時刻(ke)。

3、注意振動盤避免發作自(zi)勵磁(ci)和諧振：

為避免被補(bu)償變(bian)(bian)頻(pin)(pin)振(zhen)動盤發(fa)作自勵磁(ci)的情(qing)況發(fa)作，就地(di)補(bu)償的電容器容量選用應(ying)盡(jin)量不(bu)過(guo)(guo)補(bu)。由于變(bian)(bian)頻(pin)(pin)振(zhen)動盤堵截電源(yuan)后，其轉速不(bu)能(neng)當即降為零，電容器對(dui)變(bian)(bian)頻(pin)(pin)振(zhen)動盤繞組放電，使變(bian)(bian)頻(pin)(pin)電機得到勵磁(ci)，有可能(neng)造成短時過(guo)(guo)電壓。