功率单元A5E38977502变频器可议价
功率单元A5E38977502变频器可议价
功率单元A5E38977502变频器可议价
功率单元A5E38977502变频器参数表
功率单元A5E38977502变频器说明书
A5E38977502变频器功率的选用
系统效率等于变频器效率与电动机效率的乘积,只有两者都处在较高的效率下工作时,则系统效率才较高。
A5E38977502从效率角度出发,在选用变频器功率时,要注意以下几点:
A5E38977502变频器功率值与电动机功率值相当时·合适,以利变频器在高的效率值下运转。
A5E38977502在变频器的功率分级与电动机功率分级不相同时,则变频器的功率要尽可能接近电动机的功率,但应略大于电动机的功率。
A5E38977502当电动机属频繁起动、制动工作或处于重载起动且较频繁工作时,可选取大一级的变频器,以利用变频器长期、·全地运行。
A5E38977502经测试,电动机实际功率确实有富余,可以考虑选用功率小于电动机功率的变频器,但要注意瞬时峰值电流是否会造成过电流保护动作。
A5E38977502当变频器与电动机功率不相同时,则·须相应调整节能程序的设置,以利达到较高的节能效果。
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