GE 745 Instruction Manual page 215

CHAPTER 6: ACTUAL VALUES
6.3 A2 Metering
6.3.1 Current
6.3.1.1 Main Menu
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CURRENT
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
PATH: ACTUAL VALUES
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For each monitored winding, the fundamental frequency magnitude and phase angle of
phase A, B, C and ground currents are recalculated every half-cycle for use in differential
and overcurrent protection. From these values, neutral, positive, negative and zero-
sequence as well as differential, restraint and ground differential currents are calculated.
These are displayed and updated approximately twice a second for readability.
A2 METERING CURRENT
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W1 CURRENT [ ]
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W2 CURRENT [ ]
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W3 CURRENT [ ]
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POSITIVE [ ]
SEQUENCE
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NEGATIVE [ ]
SEQUENCE
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ZERO SEQUENCE [ ]
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DIFFERENTIAL [ ]
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RESTRAINT [ ]
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GROUND [ ]
DIFFERENTIAL
A2 METERING
See below.
See below.
See below.
See page 6–8
See page 6–8
See page 6–9
See page 6–9
See page 6–9
See page 6–10
6–7