What’ the PVC welding cable and what’s the application?

Because of its good physical, chemical and electrical flame retardant properties, pvc began to use soft pvc as insulation material for electrical wires in the 1930s and 1940s. Now the pvc single cable industry has made a qualitative leap forward. Polyvinyl chloride, commonly abbreviated PVC copper welding cable. It is the world’s third — most widely produced synthetic plastic polymer, after polyethylene and polypropylene. Pure pvc is a white, brittle solid. It is insoluble in alcohol but slightly soluble in tetrahydrofuran. PVC comes in two basic forms: rigid and flexible.

Precaution for the use of pvc welding cable in winter

since the outdoor temperature is below minus 10, the PVC insulation and sheathing materials at low temperature show a hard and brittle characteristic. If accidentally bumped in the course of laying, it’s easy to damage the insulated wire core of pvc 95mm welding cable. Even if the field completion test can pass smoothly after pvc cable laying, partial discharge will occur after the cable is continuously electrified in the later stage, after the capacitive current flows through the damaged part. 

The measures to prevent pvc cable failure

 

From the beginning of the design, you must have a good understanding of the grounding system used in the pvc jacket cable. You should select pvc mc cables that match their voltage levels to avoid long-term overvoltage conditions. The selection of the outer protective layer of the 35mm welding cable should comply with the requirements of the service life of the environment. At the same time, the pvc wire protector should not only satisfy the relative grounding.

The fire risk of pvc welding  cable

Then it will destroy the insulation, and leave a fire risk. The main reason is that the insulation of pvc cable contains impurity water and bubble. The thickness of insulating layer is uneven. If the welding cable malaysia is too close to the thermal pipe or the cable is overloaded for a long time, the insulation material will be aged when the temperature is too high. Overheating of pvc wires cables causes short-circuit, resulting in the deterioration of insulation performance and breakdown ignition.