1、注意振動盤電壓大小要求：

國家標準規定(ding)，并聯電(dian)容器工頻長(chang)時(shi)刻過(guo)電(dian)壓(ya)值zui多不超(chao)越1.1倍(bei)額定(ding)電(dian)壓(ya)。關于大中型異(yi)步(bu)變頻振動盤考慮到確保必(bi)定(ding)的補償效果，而又(you)會(hui)出(chu)現(xian)較高過(guo)電(dian)壓(ya)，這時(shi)可選用(yong)壓(ya)敏器件限制過(guo)電(dian)壓(ya)。

2、注意振(zhen)動盤(pan)維(wei)持(chi)電壓(ya)時刻要求：

關于(yu)(yu)需主動(dong)(dong)(dong)投切的(de)變頻(pin)振動(dong)(dong)(dong)盤，或可逆運(yun)轉的(de)變頻(pin)振動(dong)(dong)(dong)盤，從正(zheng)轉狀態(tai)到反轉狀態(tai)的(de)過渡時(shi)刻(ke)(ke)內，電(dian)(dian)容(rong)器的(de)端(duan)電(dian)(dian)壓必須降(jiang)到額定峰值(初始(shi)值)電(dian)(dian)壓的(de)10%以下，不然由于(yu)(yu)自(zi)勵磁的(de)添加，變頻(pin)振動(dong)(dong)(dong)盤的(de)端(duan)電(dian)(dian)壓將(jiang)升高到不能允許的(de)程度。當選用主動(dong)(dong)(dong)投切時(shi)，投、切時(shi)刻(ke)(ke)間隔的(de)時(shi)限應大于(yu)(yu)或等于(yu)(yu)電(dian)(dian)容(rong)器放(fang)電(dian)(dian)時(shi)刻(ke)(ke)。

3、注意振動盤避免(mian)發作自勵(li)磁(ci)和諧振：

為避免被補償變頻(pin)振動盤發(fa)作(zuo)自勵(li)磁的情況發(fa)作(zuo)，就(jiu)地補償的電(dian)(dian)(dian)容(rong)器容(rong)量選用應(ying)盡量不過補。由于變頻(pin)振動盤堵截電(dian)(dian)(dian)源后，其轉速不能(neng)當即降為零(ling)，電(dian)(dian)(dian)容(rong)器對(dui)變頻(pin)振動盤繞組放電(dian)(dian)(dian)，使變頻(pin)電(dian)(dian)(dian)機得到(dao)勵(li)磁，有可能(neng)造成(cheng)短時(shi)過電(dian)(dian)(dian)壓。