ABB Relion REB500, Product Manual, Page: 37 / 50

Distributed busbar protection REB500 1MRK 505 352-BEN
Product version: 8.2 Issued: 2016-03-01
Revision: -
ABB 37
Station level functions (applicable for nominal frequencies of 50 and 60 Hz)
Table 26. Busbar protection 87B (PDIF)
Function/ Parameter Range/ Value Accuracy
Min. fault current pick-up setting (I
kmin
) 200 to 6000 A in steps of 100 A ±5% of I
N
at I
kmin
< I
N
±5% of I
kmin
at I
kmin
> I
N
*)
Neutral current detection 100 to 6000 A in steps of 100 A ±5% of I
N
at I
kmin
< I
N
±5% of I
kmin
at I
kmin
> I
N
Stabilizing factor (k) 0.7 to 0.9 in steps of 0.05 -
Differential current alarm operate current 5 to 50% x I
kmin
in steps of 5% -
Differential current alarm time delay 2 to 50 s in steps of 1 s -
Isolator alarm time delay 0.5 to 90 s -
Typical tripping time
typically 15 ms at I
Diff
³
5 x I
k,min
; for
f
N
= 50, 60 Hz, incl. tripping relays
-
CT ratio per feeder 50 to 10 000/1 A,
50 to 10 000/5 A,
adjustable via HMI -
Reset time
40 to 100 ms at I
Diff
³
1 I
k,min
for f
N
= 50, 60 Hz
-
*) For details about pickup accuracy see 1KHL020789-Aen-Verification-Pickup-Value
Table 27. Breaker failure protection 50BF (PBRF)
Function/ Parameter Range/ Value Accuracy
Operate current 0.1 to 2 x I
N
in steps of 0.1 x I
N
±5% of I
N
Timer t1
10 to 5000 ms in steps of 10 ms -
Timer t2
0 to 5000 ms in steps of 10 ms
-
Remote trip pulse 100 to 2000 ms in steps of 10 ms
-
Reset ratio
80% of I
k
at I
k
³
5 x I
N
80% of I
N
at I
k
£
5 x I
N
±5% of I
N
Table 28. End-fault protection 51/62EF (PTOC)
Function/ Parameter Range/ Value Accuracy
Operate current
0.1 to 2 x I
N
in steps of 0.1 I
N
±5% of I
N
at I
Set
< I
N
±5% of I
Set
at I
Set
³
I
N
Time delay 100 to 10,000 ms in steps of 100 ms
-
Pick up time 50..100 ms
Reset ratio 95%
±4% of I
N
at I
Set
£
I
N
-±1% of I
Set
at I
Set
³
I
N
Reset time
70 to 140 ms at I
k
= 1.2 – 20 x I
N
for f
N
= 50, 60 Hz
-