1、注意振動盤電壓大小要求：

國家標準規定，并聯電(dian)(dian)(dian)容器(qi)工頻長時(shi)刻過電(dian)(dian)(dian)壓(ya)(ya)值zui多不(bu)超越(yue)1.1倍額定電(dian)(dian)(dian)壓(ya)(ya)。關(guan)于(yu)大中(zhong)型異步(bu)變頻振動(dong)盤考慮到確(que)保必定的補償效果(guo)，而又(you)會出現較(jiao)高過電(dian)(dian)(dian)壓(ya)(ya)，這(zhe)時(shi)可選用(yong)壓(ya)(ya)敏器(qi)件限制過電(dian)(dian)(dian)壓(ya)(ya)。

2、注意振動盤維持電(dian)壓(ya)時刻要求：

關于需主(zhu)動(dong)(dong)投切的變頻振動(dong)(dong)盤，或可(ke)逆運轉的變頻振動(dong)(dong)盤，從正轉狀態到(dao)反轉狀態的過渡(du)時刻(ke)內，電(dian)(dian)容器的端電(dian)(dian)壓(ya)必(bi)須降到(dao)額定(ding)峰值(初始值)電(dian)(dian)壓(ya)的10%以(yi)下，不然由于自勵磁的添加，變頻振動(dong)(dong)盤的端電(dian)(dian)壓(ya)將升(sheng)高到(dao)不能允(yun)許的程度。當(dang)選用主(zhu)動(dong)(dong)投切時，投、切時刻(ke)間(jian)隔(ge)的時限(xian)應大(da)于或等于電(dian)(dian)容器放電(dian)(dian)時刻(ke)。

3、注意(yi)振(zhen)動盤避免發作自勵磁和諧振(zhen)：

為避免(mian)被補(bu)償變(bian)頻(pin)振動(dong)盤(pan)發作自勵(li)(li)磁的情況(kuang)發作，就地補(bu)償的電(dian)容器容量(liang)選用(yong)應盡量(liang)不過補(bu)。由于變(bian)頻(pin)振動(dong)盤(pan)堵(du)截電(dian)源后(hou)，其轉速不能當即降為零，電(dian)容器對變(bian)頻(pin)振動(dong)盤(pan)繞組放(fang)電(dian)，使變(bian)頻(pin)電(dian)機得到(dao)勵(li)(li)磁，有可能造成短時過電(dian)壓。