GE 745 - 6.3 A2 Metering; 6.3.1 Current; 6.3.1.1 Main Menu

CHAPTER 6: ACTUAL VALUES A2 METERING
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–7
6.3 A2 Metering
6.3.1 Current
6.3.1.1 Main Menu
PATH: ACTUAL VALUES
 A2 METERING  CURRENT
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.
 CURRENT []  W1 CURRENT []
See below.
MESSAGE
 W2 CURRENT []
See below.
MESSAGE
 W3 CURRENT []
See below.
MESSAGE
 POSITIVE []
SEQUENCE
See page 6–8
MESSAGE
 NEGATIVE []
SEQUENCE
See page 6–8
MESSAGE
 ZERO SEQUENCE []
See page 6–9
MESSAGE
 DIFFERENTIAL []
See page 6–9
MESSAGE
 RESTRAINT []
See page 6–9
MESSAGE
 GROUND []
DIFFERENTIAL
See page 6–10