ABB REB500 - 3.6 Configuration Menu

1MRK 505 350-UEN Section 4
Busbar protection
Technical Manual 33
Distributed busbar protection REB500
Section 4 Busbar protection
4.1 Configuration
In the busbar protection settings dialog, there are three tabs for setting parameters
for the different operating characteristics. Table 31 lists the allowed ranges for
these parameters.
Table 31 Busbar protection settings
Operating
characteristic
Parameter Min. Max. Default Step Unit
L1, L2, L3
I
Kmin
2
00
6000
1000
100
A
k’
0.7
0.9
0.80
0.05
Differential current alarm
5
50
10
5
%
I
Kmin
Delay (Differential current alarm)
1
50
5
1
s
L0
I
Kmin
100
6000
300
100
A
k
0.7
0.9
0.80
0.05
Differential current alarm
5
50
10
5
%
I
Kmin
Delay (Differential current alarm)
1
50
10
1
s
Check
-
Zone
I
Kmin
2
00
6000
1000
100
A
k
0
0.9
0.25
0.05
Differential current alarm
5
50
10
5
%
I
Kmin
Delay (Differential current alarm)
2
50
5
1
s
The operating characteristic shown in Figure 6 only applies for the restrained
current amplitude comparison algorithm. There are no settings for the phase
comparison algorithm.
The tab “L1, L2, L3 operating characteristic” is for entering the parameters
applicable to the phase fault operating characteristic; “L0 operating characteristic”
for setting the ground fault characteristic. This tab is only available if a neutral
current measurement has been configured.
The third tab “Check Zone operating characteristic” is only available if a check
zone protection has been configured.