Twin arc profiles

Disadvantages of standard cable cleat profiles

In the past many cable cleats had a simple circular internal profile; this gives excellent surface contact on the maximum size of cable in the clamping range (84% of the cable in contact with the cable cleat) which in turn gives an excellent level of axial restraint.

However, on the minimum size of cable in the clamping range, little more than a point contact between the top and bottom of the cable and the cable cleat (11% of the cable in contact with the cable cleat) is achieved which gives a very poor level of axial restraint.

Due to the poor surface contact (only in the centres at the top and bottom of the cable) on the smaller sizes of cable in the range, it is easy to over-tighten the fixing bolts. This not only crushes the cable out of shape, it also deforms the cable cleat around the cable therefore stressing the cable cleat material. It is not possible to have the same bolt torque settings for every size of cable, since the smaller cables allow the cable cleat to deform (closing the gaps either side of the cable to cable cleat contact areas in the centre) and the torque level will be reached later, so installation procedures can be ambiguous.

Typical range taking capabilities of prior art cable cleats vary from 5-8mm on cable outside diameter.

Benefits of CMP Twin Arc Cable Cleat Profiles

分析CMP的单螺栓Saber，Valiant and Solace和Bolt猎鹰，Zenith和Themis电缆夹板内部轮廓，有两个独立的弧线切向;一个弧适合于最小尺寸电缆，另一个电弧适合于夹紧范围内的最大尺寸电缆。切线连接意味着所有电缆尺寸
之间的夹在一起。

This gives an almost uniform level of surface contact throughout the clamping range (44% on the minimum and 54% on the maximum sized cables) meaning axial restraint is just as good on the smaller sizes of cable in the range as it is for the largest.

The better comparative surface area contact throughout the clamping range also means that the same torque settings can be used, no matter what size of cable is fitted; removing any uncertainty during installation.

By using the new twin arc design, CMP has also dramatically increased the range taking capability of these types of cable cleat, which varies from 10-15mm on cable outside diameter.