11.4
Instantaneous Current Curves (Ground Current Measured)
The following characteristics is available:
• DEFT – Definite Time-Overcurrent
Explanation
• t = Tripping delay
• IX = Fault current
• Pickup = If the pickup value is exceeded, the module/element starts to time out to
trip.
The ground current can be measured either directly via a zero sequence transformer or
detected by a residual connection.
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11 Appendix
11.4 Instantaneous Current Curves (Ground Current Measured)
