ABB REL300 Instruction Manual page 164

I.L. 40-385.7
1.1.3 Input Transformer (I P ) Check
Step 6.
1.1.4 OPTO-Input Check
Step 7.
(SBP) input test. On the Microprocessor module, remove JMP12 (spare) and place it in the
B-2
Apply forward fault current I
4A ± 5%. The display should show "Z1G AG".
Repeat for B and C phases per the following table:
Phase B
70 ∠120°
V =
A
30 ∠0°
V =
B
70 ∠-120°
V =
C
4 ∠-75°
I =
B
Change the settings from Table B-1as follows:
ZIP = OUT
ZIG = OUT
DIRU = DUAL
GBCV = CO-8
GBPU = 0.5
GDIR = YES
GTC = 24
For a dual polarizing ground directional unit (DIRU = DUAL) test, connect the test
circuit shown in Figure B-4. Apply I
apply a balanced 3-phase voltage (70 Vac) to Va, Vb, Vc, and Vn. Apply Ia = 4A to
terminals 6 (+) and 5 (-). The relay should trip at the following angles:
• -3°
• -90° (± 87°)
• -177°
The relay should not trip at the following angles:
• +3°
• +90° (± 87°)
• +177°
Change the settings back to Table B-1.
Before applying the input voltages, check the jumper positions on the Inter-connect
module for the rated voltage selections and check JMP7 and JMP9 for the STUB
JMP5 position.
∠-75° suddenly. The relay should trip for I
A
Phase C
70 ∠-120°
V =
A
70 ∠120°
V =
B
30 ∠0°
V =
C
4 ∠-75°
I =
C
= 1.0A ∠−90° to terminals 12(+) and 11(-), and
P
=
A