by
Mohamed Lahdhiri , Marketing And Sales Consultant , EBM Doha Factory for Paints and Chemicals
Definition: Zone Selective Interlocking (ZSI) :A method which allows two or more ground fault breakers to communicate with each other so that a short circuit or ground fault will be cleared by the breaker closest to the fault in the minimum time. The primary goal of ZSI is to switch off the fault current within the shortest possible time under consideration of full selectivity, regardless of the location of the fault.
Function: Selective tripping with minimum short-circuit duration, irrespective of the grading level in which the short-circuit occurs.
