VersaRupter MV Indoor Switch | Installation and Operation Manual 45
Replacement of Parts 5-27 kV
The VersaRupter is equipped with DMC insulators (glass
fiber-reinforced polyester) with self tapping screws to se-
cure the insulators and contacts.
The following procedure must be followed if the same in-
sulators and screws are to be used after replacing parts:
1. Unscrew the self tapping screws using a T40 Torx sock-
et carefully and brush them clean. Blow out any small
particles in the threaded holes with proper eye protec-
tion.
2. The screw must be reinstalled carefully into the
threads of the insulator and tightened with care. See
correct torque values in “Torque Values for Self Tap-
ping Screws”.
If a new insulator is being installed, the holes in the insula-
tor should be threaded about 10 mm deep by the self tap-
ping screw before mounting. Remove the screw and blow
the threaded holes clean. See the procedures on the fol-
lowing pages regarding installation.
Figure 106
Figure 107
These operations must be carried out by
specialists only! Improper installation may
result in serious injury or death.
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