1、注意五金塑料件振動盤電壓大(da)小要(yao)求(qiu)：

國家標準規定(ding)，并聯電(dian)(dian)容器(qi)工頻長時(shi)刻過(guo)電(dian)(dian)壓(ya)(ya)值zui多不超(chao)越1.1倍(bei)額定(ding)電(dian)(dian)壓(ya)(ya)。關(guan)于大中型(xing)異(yi)步變頻振動盤(pan)考(kao)慮到確保必定(ding)的補償效(xiao)果，而又會出現較高過(guo)電(dian)(dian)壓(ya)(ya)，這時(shi)可選用壓(ya)(ya)敏器(qi)件限(xian)制過(guo)電(dian)(dian)壓(ya)(ya)。

2、注意振動盤維持(chi)電壓時(shi)刻要求：

關于需主動(dong)(dong)投切的(de)(de)(de)變(bian)頻振(zhen)動(dong)(dong)盤(pan)，或可逆運(yun)轉(zhuan)的(de)(de)(de)變(bian)頻振(zhen)動(dong)(dong)盤(pan)，從(cong)正(zheng)轉(zhuan)狀態到(dao)反轉(zhuan)狀態的(de)(de)(de)過渡時(shi)(shi)刻(ke)(ke)內，電(dian)(dian)(dian)容器的(de)(de)(de)端電(dian)(dian)(dian)壓必(bi)須降到(dao)額(e)定峰值(zhi)(初(chu)始值(zhi))電(dian)(dian)(dian)壓的(de)(de)(de)10%以下，不然由于自勵磁的(de)(de)(de)添(tian)加，變(bian)頻振(zhen)動(dong)(dong)盤(pan)的(de)(de)(de)端電(dian)(dian)(dian)壓將升高到(dao)不能允許(xu)的(de)(de)(de)程度(du)。當選用主動(dong)(dong)投切時(shi)(shi)，投、切時(shi)(shi)刻(ke)(ke)間(jian)隔的(de)(de)(de)時(shi)(shi)限應大于或等(deng)于電(dian)(dian)(dian)容器放電(dian)(dian)(dian)時(shi)(shi)刻(ke)(ke)。

3、注意(yi)振動盤避免發作(zuo)自勵磁和諧振：

為(wei)避免被補償變(bian)頻振動盤發作(zuo)(zuo)自勵磁的(de)(de)情況發作(zuo)(zuo)，就(jiu)地補償的(de)(de)電(dian)容(rong)器(qi)容(rong)量選(xuan)用應(ying)盡(jin)量不過補。由于變(bian)頻振動盤堵截電(dian)源(yuan)后(hou)，其轉(zhuan)速不能(neng)當即降為(wei)零，電(dian)容(rong)器(qi)對變(bian)頻振動盤繞組(zu)放電(dian)，使變(bian)頻電(dian)機得到勵磁，有可能(neng)造成短時過電(dian)壓。