1、注意振動盤電壓大小要求：

國家標準規(gui)定，并聯(lian)電(dian)容(rong)器工(gong)頻(pin)(pin)長時刻過電(dian)壓(ya)值(zhi)zui多不超越(yue)1.1倍額定電(dian)壓(ya)。關于大中(zhong)型異(yi)步變(bian)頻(pin)(pin)振動盤(pan)考(kao)慮(lv)到(dao)確保(bao)必定的補償效果，而又會出現(xian)較高過電(dian)壓(ya)，這時可選用壓(ya)敏(min)器件限制過電(dian)壓(ya)。

2、注意振動盤維持電壓時(shi)刻要求：

關于(yu)需主(zhu)動(dong)投切的變(bian)頻(pin)(pin)振(zhen)動(dong)盤(pan)，或可逆運轉的變(bian)頻(pin)(pin)振(zhen)動(dong)盤(pan)，從(cong)正轉狀態(tai)到反轉狀態(tai)的過渡(du)時(shi)(shi)刻(ke)內，電容(rong)器(qi)的端電壓必須(xu)降到額定峰值(zhi)(初始值(zhi))電壓的10%以下，不然由于(yu)自勵磁(ci)的添加，變(bian)頻(pin)(pin)振(zhen)動(dong)盤(pan)的端電壓將升高到不能允許的程度。當選用主(zhu)動(dong)投切時(shi)(shi)，投、切時(shi)(shi)刻(ke)間隔的時(shi)(shi)限應大于(yu)或等于(yu)電容(rong)器(qi)放(fang)電時(shi)(shi)刻(ke)。

3、注意振動盤避免(mian)發作自(zi)勵磁和諧(xie)振：

為避免(mian)被(bei)補(bu)償變(bian)頻(pin)振動盤發作自勵磁(ci)的情況發作，就地補(bu)償的電(dian)(dian)(dian)(dian)容器容量選用應盡量不(bu)過(guo)補(bu)。由于變(bian)頻(pin)振動盤堵(du)截(jie)電(dian)(dian)(dian)(dian)源后，其轉速(su)不(bu)能當(dang)即降為零(ling)，電(dian)(dian)(dian)(dian)容器對(dui)變(bian)頻(pin)振動盤繞組(zu)放電(dian)(dian)(dian)(dian)，使變(bian)頻(pin)電(dian)(dian)(dian)(dian)機得到勵磁(ci)，有可能造(zao)成短時(shi)過(guo)電(dian)(dian)(dian)(dian)壓。