Helical tension clamps, type СН

Helical tension clamps, type СН-Dпр-Х represent the new generation of OTL tension accessories which supersedes the well- known strain clamps of НКК, НЗ, НБ, НС, НАС and НАСУС types.

Spiral tension clamps, type СН-Dпр-Х can be used for:

• fixing of bare conductors and ground wires on overhead power transmission lines;
• fixing of the optical ground wire (OPGW) on OTL towers;
• fixing of the all-dielectric self-supporting fiber-optic cable (ADSS) on OTL towers.

Legend to the marking of a helical tension clamp, type СН-Dпр-X :

C – helix;

H – tension;

Dпр – diameter of a conductor, ground wire, OPGW, ADSS for which the clamp is intended, mm;

X – modification of a helical tension clamp:

A – with aluminum or steel thimble, armor rods and one power strand;
A2 – with aluminum to steel humble and one power lock;
БК – with one power strand without thimble and armor rods;
Д1 – with two power strands, armor rods and one thimble;
Д2 – with two power strands, armor rods and two thimble;
Д12 – with two power strands and one thimble;
Д22 – with two power strands and two thimbles.

Helical tension clamps, type СН-Dпр-X are used for dead-end fixing of steel-aluminum conductors, ground, fiber-optic cable (ADSS) and the optical ground wire (OPGW) wires to the OTL towers.

Helical tension clamps, type СН-Dпр-Х consists of:

• a spiral clamp in the form of an U-shaped strand which has an abrasive coating from inside;
• armor rods;
• steel or aluminum alloy thimble;
• hardware.

All modifiсations of Helical tension clamps, type СН meet the requirements of TU U 27.1-30255335-005:2013.