ABB Relion Technical Manual page 284

Section 8
Current protection
278
Current Pickup Level
PickupCurr
VDepFact * PickupCurr
ANSI10000124 V1 EN
Figure 127: Example for current pickup level variation as function of measured
voltage magnitude in Step mode of operation
This feature simply changes the set overcurrent pickup level in accordance with
magnitude variations of the measured voltage. This feature also affects the pickup current
value for the calculation of operate times for IDMT curves (the overcurrent with IDMT
curve operates faster during low voltage conditions).
VHighLimit
ANSI10000124-1-en.vsd
1MRK 502 048-UUS A
VBase
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