ABB REL 356

ABB REL 356 Current Differential Protection
5-6
Testing
STEP 4
Remove the inner chassis.
a) Note factory settings of jumpers on the Opto-isolated Input module.
b) Make sure that the jumpers are set for the desired battery voltage.
STEP 5
Insert and secure the inner chassis. Power the unit up.
STEP 6
Verify relays response to all types of relay faults by applying the test quantities per the following table. Note: apply all
of the fault currents suddenly. Adjust value up or down to find the point where relay just trips. Three different cases are
presented, only one needs to be performed.
REL 356 Test Tables V 1.20
The measuring error is 10% of calculated pick-up value or 0.250 A, whichever is greater.
Test Conditions: Case 1 - C0=0, C1=0.1, C2=0.7, OTH=0.50 (OTH=0.70 for V1.15 or lower)
Test Table 1
Fault Type
I
Amps
Ð
Angle
Calculated
Pickup Value
Current
Pickup range
AG
I
A
= 4.17
Ð
0
I
B
= 0
Ð
-120
I
C
= 0
Ð
-240
4.17A 3.15 – 4.59A
BG
I
A
= 0
Ð
0
I
B
= 3.31
Ð
-120
I
C
= 0
Ð
-240
3.31A 2.98 – 3.64A
CG
I
A
= 0
Ð
0
I
B
= 0
Ð
-120
I
C
= 3.31
Ð
-240
3.31A 2.98 – 3.64A
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 – 9.16