ABB REF601 CEI - Protection functions

1MDU07205-YN rev. F
REF601 CEI
User’s manual
19
Technical data
Protection functions
Three-phase non-directional overcurrent protection
Low-set stage I > Setting range of pick-up
current
0.2...1.2 x In in steps of 0.05,
Excludable
Setting range of time multipler
‘ k ‘
0.1...1.6, in steps of 0.1
Inverse time characteristics IEC 60255-3:
Very inverse,
Accuracy of pick-up current NA (Only VI Curve)
Accuracy of operate time
IDMT characteristic class E(5) or ± 30 msec
Reset ratio IDMT : 0.96
High-set stage I >> Setting range of pick-up
current
0.2...5 x In in steps of 0.1,
Excludable
Operation mode Defi nite time
Operate time t >> 0.05...1 sec in steps of 0.05
Accuracy of pick-up current ± 10% of set value
Accuracy of operate time ± 5% of set value or ± 30 msec
Reset ratio 0.98
Very High-set stage
I >>>
Setting range of pick-up
current
0.8...15 x In in steps of 0.2,
Excludable
Operation mode Defi nite time
Operate time t >>> 0.05...0.2 sec in steps of 0.05
Accuracy of pick-up current ± 10% of set value
Accuracy of operate time ± 5% of set value or ± 30 msec
Reset ratio 0.98