Suspension Clamp

The aluminum suspension clamp body and keeper are made by aluminum alloy, cotter pin is stainless steel, other parts are hot dip galvanized steel.

The Aluminium Alloy Suspension Clamp is used to fix the wire on the insulator string of the tower, or hang the lightning protection line on the tower.

How to choose the suspension clamp? 

When the suspension clamp hangs the wire, it should be able to bear all the load of the wire in the vertical pitch, and the wire is not allowed to slide or detach from the insulator string in the wire clamp when the line is being held or broken.

When the suspension clamp hangs the lightning cable, it should be able to bear all the load of the lightning cable in the vertical pitch, and when the lightning cable is balanced in tension, the lightning cable is not allowed to slide in the wire clamp.

The suspension clamp can be divided into several kinds according to the type of applicable wire and lightning cable, and the appropriate overhang clamp model must be selected according to the wire (including the thickness of the base package belt or the diameter of the guard wire) or the diameter of the lightning cable and the size of the load.

The suspension clamp must have sufficient mechanical strength.

The overhang line is sandwiched in the case of line operation, and mainly bears the comprehensive load formed by the vertical and horizontal load of the early lightning protection line.

When the maximum load occurs on the wire or lightning protection line, after considering the safety period, it should not be less than the failure load of the wire clamp. The maximum load is the comprehensive value of the self-weight of the guide line or lightning protection line, the icing weight and the horizontal wind load. It's recommended to choose a mechanical strength safety factor of 2.5.

The suspension clamp should have a certain grip strength.

Grip strength refers to the measurement of the grip value applied to the installed wire clamp under specified test conditions. Under operating conditions, when the wire or lightning protection wire experiences uneven icing or uneven load, the suspension line clamp should have a certain grip strength on the wire or lightning protection wire, meaning that the wire is not allowed to slip out of the clamp at this time.

The suspension line clamp must have a sufficient sag angle.

The undulating terrain of overhead lines causes changes in the distance and height differences of the poles, as well as variations in the wires and lightning protection wires affected by environmental temperature and load. All of these will cause different sag angles to occur on both sides of the pole's suspension point.