1. Introduction and function of PVC trunking
PVC trunking is a kind of Wiring duct made of PVC, also known as wiring duct, distribution trunking and wiring trunking (which varies from place to place). It is mainly used for internal wiring of electrical equipment, and plays a role in mechanical protection and electrical protection of wires laid in electrical equipment of 120V and below. After using PVC trunking, wiring is convenient, orderly, reliable in installation, easy to find, and conducive to maintenance and adjustment of lines.
PVC trunking has the characteristics of insulation, arc prevention, flame retardant and self-extinguishing.The wiring mode of distribution box and cabinet has changed greatly after the appearance of trunking. In the era without trunking, electrical components are punched and installed on the distribution box, and wires and cables generally use hard wires, which need to be bent one by one and then routed horizontally and vertically, which is a great test for the skills of wiring masters.Since the birth of trunking, hard wire wiring is no longer used gradually. Generally, multi-core soft wires are used, which only need to be simply led into trunking, and the trunking can be covered after all connections are made. It is very convenient and fast, and no special technology is needed.
2.Common faults of poor quality trunking
01The purity of PVC raw materials is not enough.High-purity PVC trunking has the characteristics of stability, good dielectric performance, durability, anti-aging and flame retardant. However, the performance of the trough with low purity is greatly reduced in all aspects, and the trough is brittle and prone to fracture when used.
02 insufficient heat resistanceThe flame retardant effect of PVC trunking increases step by step from HB, V2, V1 and V0, and different grades correspond to different flame retardant effects and different applicable scenarios. If the performance of trunking does not meet the relevant heat-resistant standards, even if the current operating temperature is not high, the trunking will still have problems such as softening and smoking, and even lead to line fire.
PVC trunking has the characteristics of insulation, arc prevention, flame retardant and self-extinguishing.The wiring mode of distribution box and cabinet has changed greatly after the appearance of trunking. In the era without trunking, electrical components are punched and installed on the distribution box, and wires and cables generally use hard wires, which need to be bent one by one and then routed horizontally and vertically, which is a great test for the skills of wiring masters.Since the birth of trunking, hard wire wiring is no longer used gradually. Generally, multi-core soft wires are used, which only need to be simply led into trunking, and the trunking can be covered after all connections are made. It is very convenient and fast, and no special technology is neede
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