Blank Test Tables - GE T60 Instruction Manual
Transformer protection system
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BLANK TEST TABLES
sets its frequency high or low to allow the T60 sample clock to catch-up or wait as necessary to reach synchronism with
the power system.
8.6 Blank test tables
8.6.1 Differential restraint tests
Table 8-5: Differential characteristic test table
Test
Phase
Balanced
A
Condition
B
C
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
8
B
C
8-16
Injected current
W1 Current
W2 Current
Displayed current
Differential
Restraint
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 8: COMMISSIONING
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