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EGCP-2 Engine Generator Control Package
Manual 26174
160
Woodward
Synchronization
Problem Probable
Cause
Corrective
Action
Unit never adequately
matches phase
Synchronizer Mode set
point in synchroscope menu
set to PERMISSIVE
Set synchronizer Mode to
appropriate setting. See
description of set points.
Synchronizer dynamics in
synchroscope menu are
improperly set up
Tune synchronizer
dynamics. See description
of set points.
Synchronizer displays small
phase difference, but
measured phase difference
is large
Generator A phase PT input
is L-L and bus A phase PT
input is L-N or vice versa
Verify that Generator A
phase PT input bus A
phase PT input are the
same form (i.e. L-N or L-L).
Bus and/or generator PT
inputs are not A phase
Verify that Bus and
generator PT inputs are A
phase.
synchronizer
improperly
calibrated
Calibrate synchronizer. See
calibration of control inputs
and outputs.
Synchronizer matches
phase, but never closes
breaker/contactor
Synchronizer Mode set
point in synchroscope menu
is set to CHECK
Set synchronizer Mode to
appropriate setting. See
description of set points.
Dwell time set point in
synchroscope menu is too
large
Reduce Dwell Time set
point in synchroscope
menu. See description of
set points.
Synchronizer displays
matched phase, but
measured phase difference
is ~180 degrees, or when
breaker closes it crash
parallels the set 180
degrees out of phase
Generator or bus PT is
reversed polarity (faulty
wiring)
Verify correct polarity of
Generator and bus PT
inputs.
Unit won’t close to dead bus Multiple unit system with
DEADBUS CLOSING set
point in configuration menu
set to DISABLED
ENABLE DEADBUS
CLOSING set point in
configuration menu. See
description of set points.
Synchronizer set point is set
to CHECK
Set synchronizer Mode to
appropriate setting. See
description of set points.
Synchronizer won’t voltage
match
VOLTAGE MATCHING set
point in synchroscope menu
is DISABLED
ENABLE the VOLTAGE
MATCHING set point in
synchroscope menu. See
description of set points.
Synchronizer does not
voltage match within spec.
Generator A phase PT
and/or Bus A phase PT
input(s) are inadequately
calibrated
Calibrate the Generator A
phase PT and Bus A phase
PT inputs. See calibration of
control inputs and outputs.
Voltage matching tolerance
set point in synchroscope
menu is too large
Appropriately set the
Voltage matching tolerance
set point in synchroscope
menu. See description of
set points.