ABB REL 356

ABB REL 356 Current Differential Protection
5-7
Testing
Test Conditions: Case 2 - C0=0, C1=0.1, C2=0.7, OTH=0.50 (OTH=0.70 for V1.15 or lower)
Test Table 2
Fault Type
I
Amps
Ð
Angle
Calculated
Pickup Value
Current
Pickup range
AG
I
A
= 1.56
Ð
0
I
B
= 0
Ð
-120
I
C
= 0
Ð
-240
1.56A 1.31 – 1.81A
BG
I
A
= 0
Ð
0
I
B
= 2.54
Ð
-120
I
C
= 0
Ð
-240
2.54A 2.28 – 2.79A
CG
I
A
= 0
Ð
0
I
B
= 0
Ð
-120
I
C
= 2.54
Ð
-240
2.54A 2.28 – 2.79A
AB
I
A
= 2.20
Ð
0
I
B
= 2.20
Ð
-180
I
C
= 0
Ð
-240
2.20A 1.95 – 2.45A
BC
I
A
= 0
Ð
0
I
B
= 1.80
Ð
-120
I
C
= 1.80
Ð
-300
1.80A 1.55 – 2.05A
CA
I
A
= 2.20
Ð
-60
I
B
= 0
Ð
-120
I
C
= 2.20
Ð
-240
2.20A 1.95 – 2.45A
ABC
I
A
= 8.33
Ð
0
I
B
= 8.33
Ð
-120
I
C
= 8.33
Ð
-240
8.83A 7.50 – 9.16A
Test Conditions: Case 3 - C0=2.5, C1=0.1, C2=0.7, OTH=0.50 (OTH=0.70 for V1.15 or lower)
Test Table 3
Fault Type
I
Amps
Ð
Angle
Calculated
Pickup Value
Current
Pickup range
AG
I
A
= 0.81
Ð
0
I
B
= 0
Ð
-120
I
C
= 0
Ð
-240
0.81A 0.56 – 1.06A
BG
I
A
= 0
Ð
0
I
B
= 1.08
Ð
-120
I
C
= 0
Ð
-240
1.08A 0.83 – 1.33A
CG
I
A
= 0
Ð
0
I
B
= 0
Ð
-120
I
C
= 1.08
Ð
-240
1.08A 0.83 – 1.33A
AB
I
A
= 2.20
Ð
0
I
B
= 2.20
Ð
-180
I
C
= 0
Ð
-240
2.20A 1.95 – 2.45A
BC
I
A
= 0
Ð
0
I
B
= 1.80
Ð
-120
I
C
= 1.80
Ð
-300
1.80A 1.55 – 2.05A
CA
I
A
= 2.20
Ð
-60
I
B
= 0
Ð
-120
I
C
= 2.20
Ð
-240
2.20A 1.95 – 2.45A
ABC
I
A
= 8.33
Ð
0
I
B
= 8.33
Ð
-120
I
C
= 8.33
Ð
-240
8.33A 7.50 – 9.16A