MR VACUTAP VR-Ex, Инструкции по установке и вводу в эксплуатацию

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7 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020 224 7545652/00 EN VACUTAP
®
VR-Ex
93025 Regensburg
Germany
Phone: +49 94140 90-0
Fax: +49 9 41 40 90-7001
E-mail: service@reinhausen.com
Internet: www.reinhausen.com
Fault description Action
Tripping of protective relay (for example RS-Ex) See "Tripping of the protective relay and re-commissioning
the transformer".
Also contact MR.
Activation of rupture disk in on-load tap-changer head
cover On-load tap-changer and transformer must be checked.
Depending on the cause of tripping, take measurements /
carry out checks on the transformer.
Contact MR to check the on-load tap-changer.
Tripping of motor protective switch in motor-drive unit See the "Fault elimination" chapter in the operating instruc-
tions of the TAPMOTION® ED-Ex motor-drive unit.
Tripping of signaling contact that indicates that the oil level
has fallen below the minimum oil level in the on-load tap-
changer oil conservator Check pipe system (pipes etc.) and on-load tap-changer
head for leaks. Check oil level and oil quality of diverter
switch oil in accordance with operating instructions for on-
load tap-changer. If the fill level has fallen below the limit
values, also contact MR.
On-load tap-changer not changing tap position (sluggish-
ness, Raise keys / Lower keys not working, no audible di-
verter switch action) Contact MR.
No change in voltage on transformer despite change in po-
sition on motor-drive unit Contact MR.
Tap position indicator on motor-drive unit and on-load tap-
changer different Contact MR.
Noises on drive shaft or motor-drive unit when changing
tap position Ensure proper mounting of the drive shaft in accordance
with its operating instructions. Check that hose clips and
protective covers are seated correctly. Contact MR in the
event of noise from the motor-drive unit.
Red message on monitoring unit If possible read out database and send to MR along with
error code.
Warning or tripping of Buchholz relay on transformer Notify manufacturer of transformer.
Deviation from desired value when measuring winding re-
sistance of transformer Contact manufacturer of transformer and, if necessary,
MR, and provide measured values.
Deviation from desired value during dissolved gas analysis
(transformer oil) Contact manufacturer of transformer and, if necessary,
MR, and provide measured values.
Deviation from desired value during transformer ratio test Contact manufacturer of transformer and, if necessary,
MR, and provide measured values.
Deviation from limit value for insulating fluids Carry out insulating fluid change, check oil conservator
breather of on-load tap-changer.
Table 14: Fault elimination