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CHAPTER 5: SETPOINTS
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
W2 PHASE C CURRENT
MESSAGE
MAGNITUDE: 1.0 x CT
W2 PHASE C CURRENT
MESSAGE
ANGLE: 0°
W2 GROUND CURRENT
MESSAGE
MAGNITUDE: 0.0 x CT
W2 GROUND CURRENT
MESSAGE
ANGLE: 0°
W3 PHASE A CURRENT
MESSAGE
MAGNITUDE: 1.0 x CT
W3 PHASE A CURRENT
MESSAGE
ANGLE: 0°
W3 PHASE B CURRENT
MESSAGE
MAGNITUDE: 1.0 x CT
W3 PHASE B CURRENT
MESSAGE
ANGLE: 0°
W3 PHASE C CURRENT
MESSAGE
MAGNITUDE: 1.0 x CT
W3 PHASE C CURRENT
MESSAGE
ANGLE: 0°
W3 GROUND CURRENT
MESSAGE
MAGNITUDE: 0.0 x CT
W3 GROUND CURRENT
MESSAGE
ANGLE: 0°
VOLTAGE INPUT
MESSAGE
MAGNITUDE: 1.0 x VT
VOLTAGE INPUT
MESSAGE
ANGLE: 0° Lag
FREQUENCY:
MESSAGE
60.00 Hz
•
W1(W3) PHASE A(C) CURRENT MAGNITUDE: Enter the winding 1(3) phase A(C) current
magnitude (in terms of the winding full load current) while in fault mode.
•
W1(3) PHASE A(C) CURRENT ANGLE: Enter the winding 1(3) phase A(C) current angle
(with respect to the winding 1 phase A current phasor) while in fault mode. Note that
the winding 1 phase A current angle cannot be edited and is used as a reference for
the other phase angles.
•
W1(3) GROUND CURRENT MAGNITUDE: Enter the winding 1(3) ground current
magnitude (in terms of the winding FLC) while in fault mode. Note that ground refers
to the measured CT current in the connection between transformer neutral and
ground. As such, this message only appears for wye or zig-zag connected windings.
•
W1(3) GROUND CURRENT ANGLE: Enter the winding 1(3) ground current angle (with
respect to the winding 1 phase A current phasor). This message only appears for wye
or zig-zag connected windings.
S6 TESTING
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 40.0 x CT in steps of 0.1
Range:
0 to 359° in steps of 1
Range:
0.0 to 2.0 x VT in steps of 0.1
Range:
0 to 359° Lag in steps of 1
Range:
45.00 to 60.00 Hz in steps of
0.01
5–111
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