ABB REJ603, Product Manual

Page: 14 / 24

Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
Revision: E
14 ABB
Table 24. Very high-set phase overcurrent protection, stage I>>> / 50-2
Parameter Value (Range)
Setting range of pick-up current ‘I >>>’ 0.2...32.0 x In in steps 0.001, infinite for CT variant
Operation accuracy
1)
± 3.0% x In for value < 1.2 In , ± 3.0% x I for value ≥ 1.2 In
Operation mode Definite time, Instantaneous
Operate time delay (DMT) ‘t >>>’ 0.04...64 s in steps of 0.01
Operation time accuracy
1)
± 2.0% of set value or ± 30 ms
Reset ratio 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.
Table 25. Low-set earth-fault protection, stage I0> / 51N
Parameter Value (Range)
Setting range of pick-up current ‘I0 >’ External earth measurement (through CBCT or residual connection) :
0.01...2.0 x In in steps 0.01, infinite
Internal earth measurement : 0.1...2.0 x In in steps 0.01, infinite
Operation accuracy
1)
External earth measurement : ± 3.0% x In for value < 1.2 In ,
± 3.0% x I for value ≥ 1.2 In
Internal earth measurement : ± 9.0% x In for value < 1.2 In ,
± 9.0% x I for value ≥ 1.2 In
Operate time delay (DMT) ‘t0 >’ 0.04...64 s in steps of 0.01
Operation time accuracy
1)
External earth measurement : ± 2.0% of set value or ± 30 ms
Internal earth measurement : ± 10.0% of set value or ± 30 ms
Operating curve type IEC 60255-151:
Normal inverse, Very inverse, Extremely inverse, Long-time inverse
ANSI C37.112:
Moderate inverse, Normal Inverse, Very inverse, Extremely inverse
Special curves:
RI inverse, HR fuse, FR fuse
Time multiplier setting ‘k0’ 0.02...1.6, in steps of 0.01
Operation time accuracy
1)

IEC, ANSI, HR, FR characteristics
 RI characteristics

IEC, ANSI, HR, FR characteristics

RI characteristics
External earth measurement : class E(5) or ± 30 ms
External earth measurement : class E(7.5) or ± 30 ms
Internal earth measurement : ± 5.0% of set value or ± 30 ms
Internal earth measurement : ± 10.0% of set value or ± 30 ms
Reset ratio IDMT : 0.96 and DT : 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.