TP-6953 7/19142 Section 7 Troubleshooting
7.12 Troubleshooting—Paralleling
Symptom Potential Causes Troubleshooting
System voltage high
A generator in the system is
configured to an incorrect, lower
voltage setting.
Verify that all generators in the system are configured so that their system voltage matches the site requirements.
This generator is configured to an
incorrect, higher voltage setting.
Verify that all generators in the system are configured so that their system voltage matches the site requirements.
System voltage low
A generator in the system is
configured to an incorrect, higher
voltage setting.
Verify that all generators in the system are configured so that their system voltage matches the site requirements.
This generator is configured to an
incorrect, lower voltage setting.
Verify that all generators in the system are configured so that their system voltage matches the site requirements.
System frequency
high
A generator in the system is
configured to 50 Hz in a 60 Hz
application.
Verify that all generators in the system are configured so that their system frequency matches the site requirements. It is
possible that one of the generators will have to be reconfigured to operate at a different speed.
This generator is configured to
60 Hz in a 50 Hz application.
Verify that all generators in the system are configured so that their system frequency matches the site requirements. It is
possible that one of the generators will have to be reconfigured to operate at a different speed.
System frequency
low
A generator in the system is
configured to 60 Hz in a 50 Hz
application.
Verify that all generators in the system are configured so that their system frequency matches the site requirements. It is
possible that one of the generators will have to be reconfigured to operate at a different speed.
This generator is configured to
50 Hz in a 60 Hz application.
Verify that all generators in the system are configured so that their system frequency matches the site requirements. It is
possible that one of the generators will have to be reconfigured to operate at a different speed.
System phase
connection mismatch
A generator in the system is
configured to an incorrect phase
connection (single-phase, delta, or
wye).
Ensure that all generators in the system have an identical phase connection and that the connection matches the site
requirements. Note: Single-phase dog-leg should not be used as a phase connection type.
This generator is configured to an
incorrect phase connection
(single-phase, delta, or wye).
Ensure that all generators in the system have an identical phase connection and that the connection matches the site
requirements. Note: Single-phase dog-leg should not be used as a phase connection type.
Generator
Management
mismatch
(on the Decision-
Makerr 3500
controller:
Generator
Management
Enabled:
Erroneous Data
Received)
The Generator Management Stable
Delay is different on at least one of
the nodes in the system.
Either change the Generator Management Stable Delay on one generator in the paralleling system (which will update all of
them) or check each generator to determine the one that doesn’t match.
The Generator Management Min
Gens Online parameter is different
on at least one of the nodes in the
system.
Either change the Generator Management Min Gens Online parameter on one generator in the paralleling system (which will
update all of them) or check each generator to determine the one that doesn’t match.
The Generator Management
Minimum Load Shed Priority
parameter is different on at least
one of the nodes in the system.
Either change the Generator Management Minimum Load Shed Priority parameter on one generator in the paralleling system
(which will update all of them) or check each generator to determine the one that doesn’t match.
The Generator Management
Runtime Threshold is different on at
least one of the nodes in the
system.
Either change the Generator Management Runtime Threshold on one generator in the paralleling system (which will update
all of them) or check each generator to determine the one that doesn’t match.
The Generator Management Fuel
Difference Threshold is different on
at least one of the nodes in the
system
Either change the Generator Management Fuel Difference Threshold on one generator in the paralleling system (which will
update all of them) or check each generator to determine the one that doesn’t match.