GE Multilin 745, Instruction Manual

Page: 168 / 242

S6 Testing 745
Transformer Management Relay
Se
tpoints
http://www.GEindustrial.com/multilin
5–94
GE Multilin
A logic input, programmed to the "Simulate Fault" function, can be used to
trigger the transition from the "Prefault Mode" to the "Fault Mode", allowing
the measurement of element operating times.
– “Playback Mode”: Select
Playback Mode
to play back a sampled waveform
data file which has been pre-loaded into the relay. In this mode, the normal
inputs are replaced with 16-cycles of waveform samples downloaded into
the 745 by the enerVista 745 Setup program (from an oscillography data
file in the IEEE Comtrade file format).
A logic input, programmed to the "Simulate Playback" function, can be used
to trigger the transition from the "Prefault Mode" to the "Playback Mode",
allowing the measurement of element operating times.
• BLOCK OPERATION OF OUTPUTS : Select the output relays which must be
blocked from operating while in simulation mode. An operator can use the
simulation feature to provide a complete functional test of the protection
features, except for the measurement of external input values. As this feature
may be used for on site testing, provision is made (with this setpoint) to block
the operation of output relays during this testing, to prevent the operation of
other equipment. Note that the default setting blocks the operation of all output
relays.
• START FAULT MODE SIGNAL : Select any logic input which, when asserted,
initiates Fault Mode simulation. This signal has an effect only if the 745 is
initially in Prefault Mode.
• START PLAYBACK MODE SIGNAL : Select any logic input which, when
asserted, initiates Playback Mode simulation. This signal has an effect only if the
745 is initially in Prefault Mode.
c) Prefault Values
PATH: SETPOINTS
!"
S6 TESTING
!"
SIMULATION
!"
PREFAULT VALUES
• W1 to W3 PHASE ABC CURRENT MAGNITUDE : Enter the Winding 1(3)
phase current magnitude (in terms of the winding full load current) while in
Prefault Mode.
• VOLTAGE INPUT MAGNITUDE : Enter the voltage magnitude (in terms of the
nominal VT secondary voltage) while in Prefault Mode.
d) Fault Values
PATH: SETPOINTS !" S6 TESTING !" SIMULATION !" FAULT VALUES
!
PREFAULT [
!
]
VALUES
W1 PHASE ABC CURRENT
MAGNITUDE:
1.0 x CT
Range: 0.0 to 40.0 x CT in steps of 0.1
MESSAGE
W2 PHASE ABC CURRENT
MAGNITUDE:
1.0 x CT
Range: 0.0 to 40.0 x CT in steps of 0.1
MESSAGE
W3 PHASE ABC CURRENT
MAGNITUDE:
1.0 x CT
Range: 0.0 to 40.0 x CT in steps of 0.1
MESSAGE
VOLTAGE INPUT
MAGNITUDE: 1.0 x VT
Range: 0.0 to 2.0 x VT in steps of 0.1
!
FAULT [
!
]
VALUES
W1 PHASE A CURRENT
MAGNITUDE:
1.0 x CT
Range: 0.0 to 40.0 x CT in steps of 0.1
MESSAGE
W1 PHASE A CURRENT
ANGLE: 0°
Range: 0 to 359° in steps of 1
MESSAGE
W1 PHASE B CURRENT
MAGNITUDE:
1.0 x CT
Range: 0.0 to 40.0 x CT in steps of 0.1
MESSAGE
W1 PHASE B CURRENT
ANGLE: 0°
Range: 0 to 359° in steps of 1