MR COMTAP ARS, Руководство по эксплуатации, Страница: 30 / 50

7 Fault elimination
Maschinenfabrik Reinhausen GmbH 2016 30 4434052/01 EN COMTAP® ARS
Error pattern Action
COMTAP® ARS not changing tap position (slug-
gishness, Raise keys/Lower keys not working) Contact MR.
No change in voltage on transformer despite
change in position on motor-drive unit Contact MR.
Tap position indicator on motor-drive unit and
COMTAP® ARS different Contact MR.
Noises on drive shaft or motor-drive unit when
changing tap position Ensure proper mounting of the drive shaft in ac-
cordance with its operating instructions. Check that
hose clips and protective covers are seated cor-
rectly. Contact MR in the event of noise from the
motor-drive unit.
Warning or tripping of Buchholz relay on transform-
er Notify manufacturer of transformer.
Deviation from desired value when measuring
winding resistance of transformer Contact manufacturer of transformer and, if neces-
sary, MR and provide measured values.
Deviation from desired value during dissolved gas
analysis (transformer oil) Contact manufacturer of transformer and, if neces-
sary, MR and provide measured values.
Deviation from desired value during transformer ra-
tio test Contact manufacturer of transformer and, if neces-
sary, MR and provide measured values.
Table 6: Fault elimination