Manual 26174
EGCP-2 Engine Generator Control Package
Woodward
163
Reactive Load Control
Problem Probable
Cause
Corrective
Action
Phase power factors do not
agree. Two of the three
phases are extremely far
out of range
CT’s are connected to
incorrect phase inputs
Verify CT’s are connected
to the appropriate input
terminals.
Engine generator set
must be off to safely open
circuit a current
transformer.
Unit carries improper
proportion of reactive load
during isochronous load
sharing
Rated kVA set point in the
configuration menu is set at
incorrect value
Appropriately set the Rated
kVA set point in the
configuration menu. See
description of set points.
Generator A phase PT
input(s) are improperly
calibrated
Calibrate the Generator A
phase PT input(s) of the
generator set(s). See
calibration of control inputs
and outputs.
Reactive load control is
unstable when paralleled
with the mains source
Reactive load control
dynamics in the reactive
load control menu are
improperly set up
Tune the Reactive load
control dynamics in the
reactive load control menu.
See description of set
points.
Unit maintains a constant
VAR load rather than a
constant power factor when
paralleled with the mains
source
VAR/PF set point in the
reactive load control menu
is set to VAR CONTROL
Appropriately set the
VAR/PF set point in the
reactive load control menu.
See description of set
points.
Unit maintains a constant
power factor load rather
than a constant VAR when
paralleled with the mains
source
VAR/PF set point is set to
PF CONTROL
Appropriately set the
VAR/PF set point in the
reactive load control menu.
See description of set
points.
Multiple generator sets are
unstable when VAR/PF
sharing at light loads
VOLTS RAMP TIME set
point in reactive load control
menu is not adjusted
properly
Appropriately set the
VOLTS RAMP TIME set
point in reactive load control
menu. See description of
set points.
Droop Current Transformer
not properly connected to
AVR
Verify the connection of the
Droop Current Transformer
to the AVR. See AVR
manufacturer’s instruction
manual for more details.