Helical rods: steel, hot dip galvanized
Additional informationFnenn represents a calculated breaking force. The actual breaking force must be determined in a test with the rope used! On request. The helical dead end consist of five or more helical rods glued together to form a bundle, which are coated with fine-grained sand on the inside to increase friction. The loop of the helical conductor fitting is protected against abrasion by a thimble. Deformation of the cable is avoided because the radial pressure is distributed over a large contact surface.
AdvantagesThere is a coloured marking on the rod bundles near the loop. It indicates the point at which the two legs of the helicals should be placed on the cable at the start of installation.
Helical rods: Steel, hot dip galvanized
Additional information
These helical dead ends are particulary designed for the full tensioning of ADSS cable in short, medium and long spans. Three ways of application are possible:
• for short spans (up to approx. 70m) and small forces:
The helical dead end is mounted on the cable starting at the black crossing mark. This leads to a long cable loop and a large bending radius of the cable. A thimble can be used in the loop of the helical dead end.
• for medium spans (approx. 70 - 150 m) and high forces:
The helical dead end is mounted on the cable starting at the red crossing mark. This leads to a short cable loop. Additional intermediate fittings for installation at the tower and a thimble are necessary.
• for long spans and high forces:
The use of protection rods is recommended. When selecting the helical dead ends the total diameter resulting out of the cable diameter plus two times the rod diameter of protection rods has to be taken into account.
There is a coloured marking on the rod bundles near the loop. It indicates the point at which the two legs of the rod should be attached to the sub protection rod/cable at the start of assembly. The helical dead end consist of five or more rods glued together to form a bundle, which are coated with fine-grained sand on the inside to increase friction. The loop of the helical conductor fitting is protected against abrasion by a thimble. Deformation of the cable is avoided because the radial pressure is distributed over a large contact surface. Fnenn represents a calculated breaking force. The actual breaking force must be determined in a test with the cable used!
Helical rods: Steel, hot dip galvanized
Additional information
When specifying the helical dead end for optical fibre telecommunication cable, please note that the total diameter resulting from the conductor diameter plus twice the wire diameter of the sub protection rod must be used.
Furthermore, the nominal forces of the thimbles must be observed.
The fittings are suitable for metal-reinforced optical fibre telecommunication cable with right-handed reinforcement and metal-free optical fibre telecommunication cable. When ordering fittings for cables with a left-hand outer layer, a corresponding note is required.
Ordering example: AG 177 103 s Fnenn represents a calculated breaking force. The actual breaking force must be determined in a test with the rope used!
In conjunction with thimbles and sub protection rod (URG), suitable for tension-resistant tensioning of metal-free cables for long spans. The thimbles and sub protection rods are not included in the delivery and must be ordered separately. The nominal force of the thimbles must be observed. The direction of lay of the sub protection rod has a ""cross lay"" to the helical dead end.
The helical dead ends are supplied bent in a loop shape. The individual rods are glued together to form a bundle. The contact surfaces are sanded.
There is a coloured marking on the rod bundles near the loop. It indicates the point
where the two legs of the rod should be placed on the sub protection rod at the start of assembly.