How to measure the thickness of cable insulation layer by measuring instrument

The insulation thickness and sheath thickness of the cable are different with the product type. The insulation thickness is also different with the increase of the voltage level, and also with the change of the cable specification. The insulation layer thickness of each cable has its own regulations. Unqualified products will bring serious harm.

Reduce the service life of wire and cable products, the corrosion of external media, and the insulation level and mechanical level of weak points will decrease. In case of routine sheath test or line grounding fault, the weak point may be broken down. Long term electrification of wires and cables will generate a large amount of heat and cause internal consumption.

It increases the difficulty in the laying process. More and more environments require that the outer diameter of high-voltage cable products should be small. During the laying process, it is necessary to consider leaving a gap so that the heat generated by the wire and cable can be dissipated. The thickness of the sheath is too thick, which will increase the difficulty of laying. Therefore, the thickness of the sheath is required to strictly comply with the relevant standards, otherwise it cannot play the role of protecting the wire and cable. Of course, we can not blindly pursue its thickness.

Therefore, the cable manufacturer should measure the thickness of the insulation layer. A commonly used measuring instrument for cables is a caliper. Can it detect the thickness of the insulation layer? Let's take a look.

In order to obtain the thickness of the insulation layer, an ordinary caliper is definitely not enough. This size is also an important information to be detected in the production of cables and cables. However, manual detection is difficult and some cables are damaged. Therefore, a double caliper linkage thickness measurement system is developed to complete the detection of the outer diameter and the thickness of the insulation layer.