Inrush Inhibit Tests - GE T35 Instruction Manual
Transformer protection system
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CHAPTER 8: COMMISSIONING
Test
Phase
Injected current
W1 Current
Min Pickup
A
B
C
Min Pickup
A
B
C
Slope 1
A
B
C
Slope 1
A
B
C
Intermediate
A
Slope 1 & 2
B
C
Intermediate
A
Slope 1 & 2
B
C
Slope 2
A
B
C
Slope 2
A
B
C
8.5.2 Inrush inhibit tests
Table 8-6: Inrush inhibit test table
Phase
Injected
W1 Current
W1 2nd
(A)
Harmonic
(%)
A
B
C
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Displayed current
W2 Current
Differential
Displayed
W2 Current
W2 2nd
I
d
(A)
Harmonic
(%)
Restraint
(pu)
2nd
I
(pu)
r
Harmonic
(%)
BLANK TEST TABLES
Status
Status: ____________
I
= _______________
d
Status: ____________
I
= _______________
d
Status: ____________
I
I
/
= _____________
d
r
Status: ____________
I
I
/
= _____________
d
r
Status: ____________
I
I
/
= _____________
d
r
Status: ____________
I
I
/
= _____________
d
r
Status: ____________
I
/
I
= _____________
d
r
Status: ____________
I
/
I
= _____________
d
r
Status
(Block/Operate)
8-15
8
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