IEEE C62.22a-2013

This guide covers the application of metal-oxide surge arresters (see IEEE Std C62.11TM-2005) to safeguard electric power equipment against the hazards of abnormally high voltage surges of various origins. This application guide does not cover the application of low-voltage surge protective devices below 1000 V alternating current (ac), except when applied to the secondary of a transformer.

Surge Protective Devices Committee (SPDC) WG 3.3.11 has been developing a switching surge energy capability test (thermal energy rating) for station and intermediate class arresters, a repetitive single-impulse withstand capability test, and incorporating the inductive voltage drop effects of the arrester leads (line and ground side) determined during the front-of-wave (FOW) discharge voltage test. These tests will be included in the next revision to C62.11. Therefore, C62.22 needs to be modified to incorporate these tests, plus any other tests that are introduced, into the arrester selection process.

Amendment Standard - Inactive-Reserved. New tests added to IEEE Std C62.11TM-2012: a switching surge energy capability test (thermal energy rating), a repetitive single-impulse withstand capability test, and the inductive voltage drop effects of the internal arrester metal current carrying components determined during the front-of-wave (FOW) discharge voltage test are included in this amendment to IEEE Std C62.22TM-2009.