1、注意振動盤電壓大小要求：

國家標準規(gui)定(ding)，并聯電容(rong)器工(gong)頻(pin)長時刻過(guo)電壓值(zhi)zui多不超越1.1倍額(e)定(ding)電壓。關于大中(zhong)型(xing)異步(bu)變頻(pin)振動(dong)盤考(kao)慮到確保必定(ding)的補償效果，而又(you)會(hui)出現較高(gao)過(guo)電壓，這(zhe)時可選用壓敏器件限制過(guo)電壓。

2、注(zhu)意振動盤維持電壓時刻要求：

關于(yu)需主(zhu)動(dong)(dong)投(tou)(tou)切(qie)的變(bian)頻(pin)振動(dong)(dong)盤(pan)，或可逆運轉的變(bian)頻(pin)振動(dong)(dong)盤(pan)，從正轉狀(zhuang)態(tai)到反轉狀(zhuang)態(tai)的過渡時刻內，電(dian)(dian)容器的端電(dian)(dian)壓(ya)必須(xu)降到額定(ding)峰值(初始值)電(dian)(dian)壓(ya)的10%以下，不然由(you)于(yu)自勵磁的添加，變(bian)頻(pin)振動(dong)(dong)盤(pan)的端電(dian)(dian)壓(ya)將升高到不能允許的程度(du)。當選用主(zhu)動(dong)(dong)投(tou)(tou)切(qie)時，投(tou)(tou)、切(qie)時刻間隔(ge)的時限(xian)應(ying)大(da)于(yu)或等于(yu)電(dian)(dian)容器放電(dian)(dian)時刻。

3、注意振動盤避免(mian)發作自(zi)勵磁和(he)諧振：

為(wei)避免(mian)被補償變(bian)(bian)頻(pin)振(zhen)動盤(pan)(pan)(pan)發作自(zi)勵磁(ci)(ci)的情況發作，就地補償的電容(rong)器(qi)容(rong)量選用應盡(jin)量不過(guo)補。由于(yu)變(bian)(bian)頻(pin)振(zhen)動盤(pan)(pan)(pan)堵(du)截電源后(hou)，其轉速不能當即降(jiang)為(wei)零，電容(rong)器(qi)對(dui)變(bian)(bian)頻(pin)振(zhen)動盤(pan)(pan)(pan)繞組放電，使(shi)變(bian)(bian)頻(pin)電機得到勵磁(ci)(ci)，有可能造成短(duan)時過(guo)電壓(ya)。