Standard Details
This document supersedes IEEE Std 28-1972 (ANSI C62.1-1971) and revises many portions of
the previous edition. Three new significant design tests have been added to determine:
(1) The highest 1.2 x 50 standard impulse which the surge arrester will allow without sparkover
(2) The effect of external contamination on sparkover
(3) Surge arrester disconnector characteristics
Additional substantive changes include:
(1) New definition of prorated section
(2) Revision of Table 1 to include a 25 kV distribution surge arrester and special ratings for rotating
machine protection
(3) Increase in maximum rate-of-rise for front-of-wave sparkover test
(4) Expanded range of currents in the discharge voltage test
(5) Reduced high current test for station surge arresters to 65 kA
(6) Expanded Table 4 to include test values for 550 kV and 800 kV system surge arresters
(7) General revision of pressure-relief test
Status |
Superseded
|
Superseded by | |
Board Approval |
1974-09-05
|
History |
Published Date:1974-12-18
|
Working Group Details