6 Commissioning
Maschinenfabrik Reinhausen GmbH 2021
60
8209941/00 EN
ECOTAP
®
VPD
®
III 30D-24 / MD&C
Figure 38: Example: Shield with cable screw connections
6.3.3.3 Requirements for the power supply circuit
Power supply during commissioning tests
DANGER
Danger of explosion!
An incorrect position of the on-load tap-changer or the motor drive shaft can
lead to malfunction and, consequently, to an overload of the on-load tap-
changer. This overload can lead to an explosion in the transformer.
► Carry out automatic adjustment and trial tap-change operations on a volt-
age-free transformer.
► Supply the controller and motor-drive unit via a separate voltage source
during these tests.
► If a separate voltage source is not available, it is imperative that the cor-
rect position of the on-load tap-changer and motor-drive unit be checked
again according to the section "Mounting the motor drive" before these
tests.
Ensure the correct position of motor-drive unit: The feather key
of the mo-
tor shaft must be facing the mark
:
Figure 39:
Check the position of the motor-drive unit
Summary of Contents for ECOTAP VPD 3 30D-24
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