1、注意振動盤電壓大小要求：

國家標準規定(ding)，并聯(lian)電(dian)容器(qi)工(gong)頻長時刻過電(dian)壓值zui多不超越(yue)1.1倍額(e)定(ding)電(dian)壓。關(guan)于大(da)中型異步變(bian)頻振動盤考(kao)慮到(dao)確保必定(ding)的補(bu)償效果(guo)，而又會(hui)出現較高過電(dian)壓，這時可(ke)選用壓敏器(qi)件限制過電(dian)壓。

2、注(zhu)意振動盤維持電壓時刻要(yao)求：

關于需主(zhu)動(dong)(dong)(dong)(dong)投切(qie)(qie)的(de)(de)(de)(de)變頻(pin)(pin)振動(dong)(dong)(dong)(dong)盤，或(huo)(huo)可逆(ni)運(yun)轉的(de)(de)(de)(de)變頻(pin)(pin)振動(dong)(dong)(dong)(dong)盤，從正(zheng)轉狀態到(dao)反轉狀態的(de)(de)(de)(de)過(guo)渡時(shi)刻(ke)內，電(dian)容器(qi)的(de)(de)(de)(de)端電(dian)壓(ya)必須降到(dao)額定峰值(初(chu)始值)電(dian)壓(ya)的(de)(de)(de)(de)10%以下(xia)，不然由于自勵磁的(de)(de)(de)(de)添加，變頻(pin)(pin)振動(dong)(dong)(dong)(dong)盤的(de)(de)(de)(de)端電(dian)壓(ya)將升高到(dao)不能允許的(de)(de)(de)(de)程度。當選用(yong)主(zhu)動(dong)(dong)(dong)(dong)投切(qie)(qie)時(shi)，投、切(qie)(qie)時(shi)刻(ke)間隔的(de)(de)(de)(de)時(shi)限應(ying)大于或(huo)(huo)等于電(dian)容器(qi)放電(dian)時(shi)刻(ke)。

3、注(zhu)意(yi)振動盤避免發作自勵磁和諧振：

為(wei)避免(mian)被補(bu)償變頻(pin)振(zhen)動(dong)盤(pan)發作自勵磁的(de)情況發作，就地補(bu)償的(de)電(dian)(dian)(dian)容器容量選(xuan)用應盡量不(bu)過補(bu)。由(you)于變頻(pin)振(zhen)動(dong)盤(pan)堵截(jie)電(dian)(dian)(dian)源后，其轉(zhuan)速(su)不(bu)能當(dang)即降為(wei)零，電(dian)(dian)(dian)容器對變頻(pin)振(zhen)動(dong)盤(pan)繞(rao)組放電(dian)(dian)(dian)，使變頻(pin)電(dian)(dian)(dian)機得到勵磁，有可能造成短時過電(dian)(dian)(dian)壓。