Project Description
Application: OPGW preformed tension clamp is used for OPGW cable line’s fixing and anchoring. It is usually installed on the terminal tower, tight tension tower, intersection angle tower, pole, etc.
Feature: The grip strength can reach over 95% of cable’s RTS without the effects of stress concentration and vibration stress.
Components: Inner rod, outer rod, thimble, ground wire, etc.
Customers can choose other link fittings according to the design requiements, such as U-shackle, clevis, extension rod, etc.
Material of inner reinforcing rods and outer rods: Aluminum-clad steel wires.
Partial model parameters:
E.g.: OPGW cable diameter is 12.85mm, the required grip strength is 60 KN, so the model no. will be SHN-O1285/060.
Used “0” ahead when the number of cable diameter ×10 2 is less than 4 figures. For example, ADSS cable diameter is 9.5mm, the required grip strength is 40KN, the model no. will be SHN-O0950/040.
If you use span to mark model no., you should change “/” to “-” and take a brackets after it, then mark the span in brackets, e.g.: SHN-OXXXX-(400M). Pay attention to special reminding: if you use span to mark model no., you must give the meteorology parameters of the environmental conditions such as the maximum wind speed, the maximum ice coating, temperature (the maximum and the minimum)
** The length of preformed rods is subject to the practical length of commodities supplied.
Notice: The above table just list partial model parameters. Before ordering products, we should confirm the diameter, and the RTS of the cable, then we can know the product model no. of the tension clamp. The application range of cable diameter in the model parameters allows a certain tolerance. According to the relevant technical regulations in China, the grip strength of OPGW tension clamp must reach over 95% of cable’s RTS.
If the cable’s RTS is big, but the required operating tension is small, we can choose the grip strength for tension clamp according to practical needs.
E.g.1: Cable diameter is 13.60mm, the RTS is 62.5 KN, required grip strength is 95% RTS, the method to confirm the model no. of tension clamp is: 13.60×10 2 =1360 62.5×95% =59.375≈60 (KN)
So the model no. of tension clamp is SHN-O1360/060.
E.g.2: Cable diameter is 12.85mm, the RTS is 55.4 KN, required grip strength is 95% RTS, the method to confirm the model no. of tension clamp is: 12.85×10 2 =1285 55.4×95% =52.63≈53 (KN)
So the model no. of tension clamp is SHN-O1285/053.
In order to make sure the well match of the tension clamp and optical cable, the cable diameter, RTS, cable elastic modulus magnitude and required materials of inner and outer rods must be provided.