ABB VersaRupter Installation, Operation And Maintanance Manual - page 52
Manual is about: MV Indoor Switch 4.76-38 kV, 200-1200 A, 40 & 61 kA
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VersaRupter MV Indoor Switch | Installation and Operation Manual
52
Replacement of Insulator on Fuse Base and Quick Make Earthing Switch
1. Using a T40 Torx socket, unscrew screws (4.2) and
detach the fuse clips and contact blocks respectively.
2. Unscrew screws at the base (4.3) of the insulator and
detach the insulator.
3. Attach the new insulator to the frame by the two self
tapping screws (4.3).
4. Attach the fuse clips and contact block to the top of
the insulator and secure with screws (4.2).
Figure 122