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Troubleshooting
35319 C
MGG155/210 Operating Manual
49
BOC L1, L2 or L3 over
Generator L1, L2 or L3 voltage was over the
Gen >V BOC
limit for
Gen V del
time
.
Over-
voltage protections are based on
Gener protect
:
Gen >V BOC
and
Gen V del
setpoints.
This alarm is issued if voltage protections are based on phase to neutral voltages. It
means that
Basic settings
:
FixVoltProtSel
is set to PHASE-NEUTRAL.
Sd L1, L2 or L3 over
Generator L1, L2 or L3 voltage was over the
Gen >V SD
limit for
Gen V del
time
.
Over-
voltage protections are based on
Gener protect
:
Gen >V SD
and
Gen V del
setpoints.
This alarm is issued if voltage protections are based on phase to neutral voltages. It
means that
Basic settings
:
FixVoltProtSel
is set to PHASE-NEUTRAL.
BOC L12, L23 or L31 under
Generator L12, L23 or L31 voltage was under the
Gen <V BOC
limit for
Gen V del
time
.
Undervoltage protections are based on
Gener protect
:
Gen <V BOC
and
Gen V del
set-
points. This alarm is issued if voltage protections are based on phase to phase voltages.
It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-PHASE.
BOC L12, L23 or L31 over
Generator L12, L23 or L31 voltage was over the
Gen >V BOC
limit for
Gen V del
time
.
Overvoltage protections are based on
Gener protect
:
Gen >V BOC
and
Gen V del
set-
points. This alarm is issued if voltage protections are based on phase to phase voltages.
It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-PHASE.
Sd L12, L23 or L31 over
Generator L12, L23 or L31 voltage was over the
Gen >V SD
limit for
Gen V del
time
.
Overvoltage protections are based on
Gener protect
:
Gen >V SD
and
Gen V del
set-
points. This alarm is issued if voltage protections are based on phase to phase voltages.
It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-PHASE.
BOC fgen under
Generator frequency was under the
Gen <f
limit for
Gen f del
time
.
Under frequency pro-
tection is based on
Gener protect
:
Gen <f
and
Gen f del
setpoints.
BOC fgen over
Generator frequency was over the
Gen >f
limit for
Gen f del
time
.
Over frequency protec-
tion is based on
Gener protect
:
Gen <f
and
Gen f del
setpoints.
BOC ReversePwr
This alarm is issued by the reverse power protection. This protection is based on
Gener
protect
:
Reverse power
and
ReversePwr del
setpoints. This alarm means that either
engine speed/power control does not work properly or generator current transformers
(CT’s) are connected in a wrong way.
MP L1, L2 or L3 under
Mains L1, L2 or L3 voltage was under the
Mains <V MP
limit for
Mains V del
time
.
Under-
voltage protections are based on
Mains protect
:
Mains <V MP
and
Mains V del
set-
points. This alarm is issued if voltage protections are based on phase to neutral voltages.
It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-NEUTRAL.
MP L1, L2 or L3 over
Mains L1, L2 or L3 voltage was over the
Mains >V MP
limit for
Mains V del
time
.
Over-
voltage protections are based on
Mains protect
:
Mains >V MP
and
Mains V del
set-
points. This alarm is issued if voltage protections are based on phase to neutral voltages.
It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-NEUTRAL.
MP L12, L23 or L31 under
Mains L12, L23 or L31 voltage was under the
Mains <V MP
limit for
Mains V del
time
.
Undervoltage protections are based on
Mains protect
:
Mains <V MP
and
Mains V del
setpoints. This alarm is issued if voltage protections are based on phase to phase volt-
ages. It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-PHASE.
MP L12, L23 or L31 over
Mains L12, L23 or L31 voltage was over the
Mains >V MP
limit for
Mains V del
time
.
Overvoltage protections are based on
Mains protect
:
Mains >V MP
and
Mains V del
setpoints. This alarm is issued if voltage protections are based on phase to phase volt-
ages. It means that
Basic settings
:
FixVoltProtSel
is set to PHASE-PHASE.
Table 8 - Digital Controller List of Alarms
NT
Alarm/History
Record
Description
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