This site uses third-party website tracking technologies to provide and continually improve our services, and to display advertisements according to users' interests. I agree and may revoke or change my consent at any time with effect for the future.
Recognized as an American National Standard (ANSI)
IEEE Std 242-1986
(Revision of IEEE Std 242-1975)
IEEE Recommended Practice for
Protection and Coordination of Industrial
and Commercial Pow