23
1ZSE 5492-129 en, Rev. 6
3.1.4 Procedure
WARNING
Before any work is carried out on the on-load tap-changer:
Make sure that the transformer is disconnected and that earthing is properly carried
out. Obtain a signed certicate from the engineer in charge.
The oil in the diverter switch housing may be hot. Be cautious!
Clamps, washers and screws
TC_00151
Fig. 8c.
Tap-changer from above
Position indicator
Bolts and tightening washers
Red point
Exact position
Tolerances
Position indicator
Fig. 8b. Gear box,
UCG, UCC, UCD
Fig. 8a. Gear box, UCL
Position indicator
Locking device
TC_00257
TC_00156
3. Repairs and adjustment
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