Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Gapped Arresters Revisited: A Solution to Cascade Coordination



A. Mansoor, Francois D. Martzloff, K. O. Phipps


This paper provides a brief perspective on how the coordination of cascaded surge-protective devices (SPDs) has become an issue. We propose an approach where the 'ancient' technology of gapped arresters may well be the answer to the dilemma of the incompatibility of a service-entrance SPD having relatively high limiting voltage with the proliferation of built-in or plug-in SPDs having relatively low limiting voltage inside the buildings. The solution involves providing a gapped arrester at the service entrance and gapless SPDs inside the building. An example is given of such a combination, with experimental verification of the proposed solution and computer modeling that allows a parametric evaluation of the significant factors in any candidate combination of SPDs.
IEEE Transactions on Power Quality


arresters, surge-protective devices (SPDs)


Mansoor, A. , Martzloff, F. and Phipps, K. (1998), Gapped Arresters Revisited: A Solution to Cascade Coordination, IEEE Transactions on Power Quality, [online], (Accessed April 14, 2024)
Created September 30, 1998, Updated October 12, 2021