7 Commissioning
Maschinenfabrik Reinhausen GmbH 202092 6385142/08 ENETOS
®
ED
7.2.4 Checking functional reliability
To ensure that the device is wired correctly, check its functional reliability.
NOTICE
Damage to device and system periphery
An incorrectly connected device can lead to damage to the device and sys-
tem periphery.
► Check the entire configuration before commissioning.
Check the following:
▪ The RUN LED on the CPU I assembly lights up.
The device is fully mounted and can be configured. The actions required for
this are described in the following chapter.
7.3 Tests on the transformer
Please contact Maschinenfabrik Reinhausen GmbH (MR) if any aspect of
the tests is not clear.
7.3.1 High-voltage tests on the transformer
Note the following points before performing high-voltage tests on the trans-
former:
▪ Ensure that the oil compartment of the on-load tap-changer is completely
filled with insulating fluid.
▪ Ensure that all protective devices for the on-load tap-changer are function-
ing correctly and are ready for use.
▪ Ensure that the ground connections on the motor-drive protective housing
and protective housing fastening are free of paint.
▪ Only perform high voltage test if motor-drive unit door is closed.
▪ Disconnect external connections to electronic components in the motor-
drive unit to prevent damage from overvoltage.
▪ When connecting the motor-drive unit's supply voltage, only use the cable
bushings in the protective housing base intended for lead insertion.
▪ Guide all ground connecting leads to one central connection point (estab-
lishment of suitable reference earth).
▪ Disconnect all electronic components before the high voltage test. Before
a dielectric test of the wiring, remove all devices with a withstand voltage
of < 1000V.
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