瀏覽導航
瀏覽導航
用來保(bao)護線路和風機的過載及短路。
本電(dian)(dian)控箱電(dian)(dian)源為三相五線制供電(dian)(dian)，三相電(dian)(dian)源可(ke)上進，也可(ke)下進。接至(zhi)電(dian)(dian)控箱底部的端子排中，裝設的自動空氣開關QF作雙速風機短路保(bao)護，熱繼電(dian)(dian)器FR用作低(di)速過載(zai)保(bao)護。
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