6 Commissioning
Maschinenfabrik Reinhausen GmbH 2020
213
7545652/00 EN
VACUTAP
®
VR-Ex
1. Ground the on-load tap-changer. To do this, only connect the grounding
terminal on the on-load tap-changer head with the transformer cover.
Figure 247: Grounding terminal on on-load tap-changer head
2. Ground the motor-drive unit. To do this, only connect the motor-drive
unit's ground connection with protection against twisting to the trans-
former's ground connection.
Figure 248: Grounding screw on motor-drive unit
3. Connect housing of temperature sensor with grounding screw on on-load
tap-changer head.
6.1.3 Checking motor-drive unit
NOTICE
Damage to the on-load tap-changer / de-energized tap-changer!
Damage to the on-load tap-changer / de-energized tap-changer due to actu-
ation of the on-load tap-changer / de-energized tap-changer without insulat-
ing fluid.
► Ensure that the selector / de-energized tap changer is fully immersed in
insulating fluid and that the oil compartment of the on-load tap-changer is
completely filled with insulating fluid.
Содержание VACUTAP VR-Ex
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