GE 745 TRANSFORMER MANAGEMENT RELAY User Manual

5-90 745 Transformer Management Relay GE Power Management
5.8 S6 TESTING 5 SETPOINTS
5
5.8.6 FAULT VALUES
This section contains the settings to configure fault mode simulation.
5.8.7 FACTORY SERVICE
This section contains settings intended for factory use only, for calibration, testing, and diagnostics. The mes-
sages can only be accessed by entering a factory service passcode in the first message.
y FAULT VALUES
y
[ENTER] for more
This message indicates the start of the
FAULT VALUES
section. To continue
these setpoints press or press for the next section.
W1 PHASE A CURRENT
MAGNITUDE: 1.0 x CT
Range: 0.0 to 40.0 (steps of 0.1)
Enter the Winding 1 (2/3) phase A (B/C) current magnitude (in terms of the
winding full load current) while in
Fault Mode
.
W1 PHASE A CURRENT
ANGLE: 0
°
Range: 0 to 359 (steps of 1)
Enter the Winding 1 (2/3) phase A (B/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 GROUND CURRENT
MAGNITUDE: 0.0 x CT
Range: 0.0 to 40.0 (steps of 0.1)
Enter the Winding 1 (2/3) 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 GROUND CURRENT
ANGLE: 0
°
Lag
Range: 0 to 359 (steps of 0.1)
Enter the Winding 1 (2/3) ground current angle (with respect to the Winding
1 phase A current phasor). This message only appears for wye or zig-zag
connected windings.
VOLTAGE INPUT
MAGNITUDE: 1.0 x VT
Range: 0.0 to 2.0 (steps of 0.1)
Enter the voltage magnitude (in terms of the nominal VT secondary voltage)
while in
Prefault Mode
.
VOLTAGE INPUT
ANGLE: 0
°
Lag
Range: 0 to 359 (steps of 1)
Enter the voltage angle (with respect to the winding 1 phase A current
phasor) while in
Fault Mode
.
FREQUENCY:
60.00 Hz
Range: 45.00 to 60.00 (steps of 0.01)
Enter the system frequency (in Hz) while in
Fault Mode
.
y FACTORY SERVICE
y
[ENTER] for more
This message indicates the start of the
FACTORY SERVICE
section. To continue
these setpoints press or press for the next section.
ENTER FACTORY
PASSCODE:
(Restricted Access For Factory Personnel Only)
ENTER
MESSAGE
ENTER
MESSAGE

GE 745 TRANSFORMER MANAGEMENT RELAY Specifications

General

Brand	GE
Model	745 TRANSFORMER MANAGEMENT RELAY
Category	Relays
Language	English