To realize the buck/Enhance feature, everything is necessary is two individual switches so the AC enter might be connected to one of the two Key taps, whilst the load is connected to the opposite, As a result using the major transformer's primary windings as an autotransformer. Your browser isn’t supported https://andrequvut.blogoxo.com/33991810/new-step-by-step-map-for-uninterruptible-power-supply-ups