GE T60 Instruction Manual page 532
Transformer protection system ur series
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Also See for T60:
- Instruction manual (796 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (486 pages)
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8.2 DIFFERENTIAL CHARACTERISTIC TEST EXAMPLES
TEST
PHASE
Slope 2
A
B
C
Slope 2
A
B
C
8
8-12
INJECTED CURRENT
W1 CURRENT
W2 CURRENT
0 0°
0 0°
0.315 –90°
8.33 –270°
0.315 –270°
8.33 –90°
0 0°
0 0°
0.18 –90°
8.33 –270°
0.18 –270°
8.33 –90°
T60 Transformer Protection System
DISPLAYED CURRENT
DIFFERENTIAL
RESTRAINT
0 0°
0 0°
7.77 –270°
8.33 –270°
7.77 –90°
8.33 –90°
0 0°
0 0°
8 –270°
8.33 –270°
8 –90°
8.33 –90°
8 COMMISSIONING
STATUS
Block
I
I
/
= 93.2%
d
r
< Slope 2 = 95%
Operate
I
I
/
= 96%
d
r
> Slope 2 = 95%
GE Multilin
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