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Goals and Symptoms
Standard setting of angle for directionnal protection is in this case is 45° but incorrect operation ( (i.e. spurious tripping) can occur with this setting.
Facts and Changes
Key Words and Phrases:
unexpected trips, directional detection, undetected events, non-detection, unwarranted tripping
Causes and Fixes
Attached document explains which alternative settings can be used to avoid spurious tripping.
Last Revised: 13 June 2008 by DRM
Applies To: Operation of Sepam Protection Relays
Original Author: DM
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