10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020354 6385142/08 ENETOS
®
ED
Characteristics/details Cause Remedy
Limit value M7/M8 > exceeded
▪ Event No. 1831 or 1833
Error in the motor-drive unit power
supply
Check whether a voltage interruption or voltage
drop occurred across one or more phases of
the power supply during the tap-change opera-
tion.
If yes, you can acknowledge this event. If this
event does not reoccur, you can continue to
operate the on-load tap-changer.
Drive shafts sluggish Check the ease of operation of the drive shafts
and gears.
With on-load tap-changer
OILTAP® M, OILTAP® R or
VACUTAP® VR: final locking de-
vice defective.
Export the service data and contact Maschi-
nenfabrik Reinhausen GmbH.
Other cause or if the event reoc-
curs
Export the service data and contact Maschi-
nenfabrik Reinhausen GmbH.
Limit value M1 to M6 >> ex-
ceeded
▪ Event No. 1820, 1822, 1824,
1826, 1828 or 1830
Error in the motor-drive unit power
supply
Check whether a voltage interruption or voltage
drop occurred across one or more phases of
the power supply during the tap-change opera-
tion.
If yes, you can acknowledge this event. If this
event does not reoccur, you can continue to
operate the on-load tap-changer.
Drive shafts sluggish Check the ease of operation of the drive shafts
and gears.
Other cause or if the event reoc-
curs
Do not acknowledge the event.
Export the service data and contact Maschi-
nenfabrik Reinhausen GmbH.
Limit value M7/M8 >> exceeded
▪ Event No. 1832 or 1834
Error in the motor-drive unit power
supply
Check whether a voltage interruption or voltage
drop occurred across one or more phases of
the power supply during the tap-change opera-
tion.
If yes, you can acknowledge this event. If this
event does not reoccur, you can continue to
operate the on-load tap-changer.
Drive shafts sluggish Check the ease of operation of the drive shafts
and gears.
With on-load tap-changer
OILTAP® M, OILTAP® R or
VACUTAP® VR: final locking de-
vice defective.
Export the service data and contact Maschi-
nenfabrik Reinhausen GmbH.
Other cause or if the event reoc-
curs
Do not acknowledge the event.
Export the service data and contact Maschi-
nenfabrik Reinhausen GmbH.
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