Mounting When The Transformer Ratio Measurement Is Carried Out After Drying - ABB UCL Installation And Commissioning Manual

3.2.2 Mounting when the transformer ratio measurement
is carried out after drying
1. Assemble the diverter switch housing and the tap selector
according to Section 3.1.3, steps 1 and 4-12.
2. Follow the instructions according to Section 3.2.1,
steps 5-13.
3. Attach the lifting device LL 136 016-D according to
Fig. 15.
The lifting device must be tilted when attaching.
Lift the tap-changer onto the yoke fork. Place the tap-
changer in position for mounting the outer shaft system
(see transformer drawing). Insert the supplied guide bolts
DS 7 and insulating bushings (not included in delivery) in
the lower flange; see Fig. 11. The guide bolts must fit into
the holes in the yoke fork and be secured by punch marks
in the pins. When the tap-changer is in place, remove the
lifting device.
4. Mount the conductors between the transformer winding
and the tap selector according to Section 3.3.
5. The tap-changer is now ready for drying together with the
transformer. Follow the instructions in Chapter 4.
22 Installation and commissioning guide UCL/VUCL | 1ZSC000562-AAZ en
Lifting device
Fig. 15. Attachment of lifting device.
Max. 90°