Load protecting switchgear.

Abstract

This project monitors voltage and provides breakpoint based low and high voltage tripping mechanism that avoids any damage to the load, various industrial and domestic systems consist of fluctuation in the AC mains. In tripping system, a quad comparator IC is used with two more comparators to be used as window comparator to it. When system deliver error the input voltage falls out of the window range. This trigger then operates a relay that cut off the load to avoid any damage to it. The lamp is used as load. The effects of voltage fluctuations to electric equipment in general and motors specifically are serious and can't be ignored. Overheating and insulation failure might happen when electric equipment's are subjected to under or over voltage conditions The protection circuit can be used to protect the costly electrical appliances from abnormal conditions like sag; swell, under voltage and over voltage and avoid appliances being affected from harmful effects.