MR VACUTAP VM-Ex, Installation And Commissioning Instructions

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5 Mounting
Maschinenfabrik Reinhausen GmbH 2020 55 5293079/01 EN VACUTAP
®
VM-Ex
Screening caps are available on request.
Figure 36: Selector connection contact with screening caps
In this case a locking washer must be placed below each screening cap. The
connection screws, nuts, and locking washers are not included in the scope
of delivery.
The through-holes of the connection contacts are either horizontal or verti-
cal, depending on the on-load tap-changer version (only horizontal for
VACUTAP® VM 300).
5.3.3.2 Tap selector connection contacts for multiple coarse tapping
arrangement
NOTICE Damage to the on-load tap-changer!
Tap-winding connecting leads situated too closely to the change-over selec-
tor's moving parts block the change-over selector and therefore result in
damage to the on-load tap-changer.
► Tap-winding connecting leads in the area of the change-over selector
have to be routed such that they are at a sufficient distance from the
change-over selector's moving parts.
In the case of multiple coarse change-over selectors, take care when routing
the cables for connecting to the tap selector connection contacts and the
multiple coarse change-over selector connection contacts. These cables
should be as far away as possible from neighboring connection contacts.
1. The tap selector connection contacts that face both multiple coarse
change-over selector columns must have at least 3 mm of paper insula-
tion to ensure dielectric strength.