MPL-B1520U-VJ72AA
电动机的功率因数无功补偿提高功率因数,减少功率损耗是无功补偿的主要目的。功率因数等于有功功率与视在功率之比,通常,功率因数低,会造成电流过大,对于一个给定的负荷,当供电电压时,则功率因数越低,电流就越大。因此功率因数尽量的高,以节约电能。
绕线式电动机液体调速液体电阻调速技术是在传统产品液体电阻起动器的基础上发展而成的。仍以改变极板间距调节电阻的大小达到无级调速的目的。这使它同时具有良好的起动性能,它长期通电,带来了发热升温问题,由于采用了的结构和合理的热交换系统,其工作温度被限定在合理的温度之下。
绕线电机用液体电阻调速技术,以其工作可靠、安装方便、节能幅度大、易维护及投资低等优点,得到了迅速推广,对于一些调速精度要求不高,调速范围要求不宽,并且不频繁调速的绕线式电动机,如风机、水泵等设备的大中型绕线式异步电动机采用液体调果显著。
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