Assembly/Pre-Assembly Of Hvi Conductors; Mounting The Head Piece/Connection Element - dehn HVI Installation Instructions Manual

4. Assembly/pre-assembly of HVI Conductors

4.1

Mounting the head piece/connection element

To mount/pre-assemble the head piece/connection element, the insulation of the HVI Conductor must
be removed by 35 mm (HVI strip 20, Part No. 597 220). We recommend to use the
DEHNhelix stripping tool (Part No. 597 230) to strip the additional grey sheath. If set correctly, the
stripping tool ensures safe stripping without damaging the black semiconductive sheath.
After removing the insulation, the head piece/connection element is attached to the conductor ends of
the HVI Conductor.
The following steps must be observed (see also Fig. 2):
Bring the head piece/connection element to the HVI Conductor and turn it clockwise onto the re-
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levant conductor end as far as it will go. To this end, an open-end wrench (wrench size 19) can be
used on the wrench contact surface of the head piece/connection element.
Tighten the two threaded pins (Allen setscrew) using a tightening torque of 5 Nm. Now the copper
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conductor of the HVI Conductor is safely electrically connected (capable of carrying lightning cur-
rents).
wrench contact surface
(wrench size 19)
wrench contact surface
(wrench size 19)
Figure 2 Mounting the head piece/connection element
16
grey sheath
HVI long Conductor
solid/stranded copper conductor
threaded pins (coated), tigh-
tening torque of 5 Nm
head piece
M12 thread
connection element