6 Commissioning
Maschinenfabrik Reinhausen GmbH 2019
49
6107891/02 EN
ECOTAP
®
VPD
®
6 Commissioning
This chapter describes how to commission the device. Commissioning is
broken down into the following sections:
▪ Commissioning at the transformer manufacturer's site
▪ Transporting transformer to the operating site
▪ Commissioning at the operating site
6.1 Commissioning the on-load tap-changer at the transformer
manufacturer's site
WARNING
Flying parts and spraying of hot oil resulting from on-load tap-
changer overload!
The on-load tap-changer can switch currents of up to twice the rated
through-current. Higher currents occur when activating transformers (inrush
current impulse) or in the event of short-circuits, for example. Higher volt-
ages may occur due to transformer overexcitation following load shedding,
for example.
Danger of death or severe injury due to flying parts and spraying of hot oil!
► Ensure that the on-load tap-changer is not overloaded.
► Prevent on-load tap-change operations if higher currents arise.
► Ensure that the rated step voltage is not exceeded. The rated step volt-
age may be briefly exceeded by up to 10% as long as the rated through-
current is not exceeded.
► Ensure that the temperature limit values stated in the technical data are
not exceeded.
NOTICE
Damage to on-load tap-changer resulting from switching with-
out oil!
Performing too many operations without a complete transformer oil fill will
damage the on-load tap-changer!
► Do not perform more than 100 tap-change operations without a full oil fill.
► Only use emergency drive shaft to rectify faults [
and never operate with a drill.
Before starting to test the transformer, take the following steps, which are
described in detail in the operating instructions for the ECOTAP® VPD® mo-
tor-drive unit:
1. Mount and connect motor-drive unit and control unit.
2. Commission motor-drive unit and control unit.
3. Carry out automatic adjustment and trial tap-change operations.
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You can then start the transformer tests. Observe the description below.
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