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How do we design a preformed dead-end for customers?

Views: 14     Author: Site Editor     Publish Time: 2022-08-17      Origin: Site

The formation of a satisfactory preformed dead-end includes two processes:

1. Basic design principles:

lConductor diameter

lInside rod diameter

lApplied overall diameter

lRod Diameter

lPitch length

lLength

图片1 

                                                                   Picture 1

Generally speaking, according to the model name and span of the cable used (the distance between two poles), we can tell the approximate weight of the cable, so as to judge the size range.

For example, a 100m span ADSS cable (G.W.100kgs): 5 steel wires with corresponding steel wire diameter 3.0mm; Or 6 steel wires with diameter2.3/2.5mm.

Remark: it is necessary to consider the natural environment: wind speed, icing degree, etc.

 

2. Holding strength design:

图片2 

Typical holding strength curve illustrates that the holding strength and the applied length are not proportional. A safety factor of approximately one pitch length is designed into the preformed dead-ends. In order to make the preformed dead-ends have a pressing force on the cable, the overall rod diameter(see Picture1) after molding will be lower than that after installation.


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