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What are the minimum currents to detect a fault?

Example for Over-current (DT curves) :

Minimum threshold for detecting phase-to-phase faults: 0.02 In-4 In
Minimum threshold for detecting zero sequence Faults : 0.008 In-1.6 In

Released for: Schneider Electric USA

Published on:7/9/2018Last Modified on:4/22/2026