Shanghai Qifan Cable Co., Ltd.

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wire byj|What does byj mean in wires and cables?

wire BYJ

Wire and cable BYJ represents cross-linked polyethylene insulated cloth wire. BYJ is a single-core wire with only one core and one layer of insulation, belonging to wire. In daily habits, people call household wiring wires wires and power cables cables cables for short. There are many kinds of "cables in cables" and "cables in cables". So there is no need to strictly distinguish.

BYJ wire specification

Common specifications: 0.75, 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, etc.

BYJ wire characteristics

BYJ, as a commonly used environmental protection wire in the decoration industry, has excellent safety performance such as high flame retardance, low smoke, aging resistance, and is widely used in the construction engineering and decoration industry.

The difference between BYJ and BV

BV is PVC insulated wire, BYJ is cross-linked polyethylene insulated wire; BYJ - Copper conductor cross-linked polyethylene insulated wire for fixed laying, temperature resistance grade 90 ℃; BV - copper conductor PVC insulated wire for fixed laying, temperature resistance grade 70 ℃; BYJ is a copper conductor cross-linked polyethylene insulated wire for fixed laying; Bv is PVC insulated copper conductor, and BYJ wire is more expensive than bv wire; BYJ copper-core XLPE insulated wire, BV is PVC insulated wire; The difference between BYJ wire and BV wire is that the insulation material is different, and other wiring uses are the same.

Advantages of byj wire products

(1) It has excellent mechanical and physical properties, good resistance to environmental stress cracking, excellent wear resistance, and can withstand concentrated mechanical stress more than PVC and PE. (2) It is resistant to various chemical solvents and relatively stable in various corrosive media around. (3) The outer diameter of cross-linked polyethylene insulated wire is smaller than that of full-PVC insulated wire of the same specification section. The pipe diameter can be reduced in the pipe threading construction, or more wires can be threaded under the same pipe diameter, reducing the construction and installation costs. (4) The weight of XLPE insulated wire products is much lighter than that of PVC insulated wire products, which is more convenient for installation and transportation, reduces labor intensity and transportation costs. (5) The maximum rated temperature of XLPE insulated wire can reach 90 ℃ during long-term operation, and the maximum temperature of wire conductor can reach 250 ℃ during short circuit (the longest duration is not more than 5S), and the current carrying capacity is greater than that of PVC insulated wire. (6) It will not release corrosive gas and toxic gas during combustion, and will not produce secondary hazards. It is a new environmental protection product that meets the requirements of modern fire safety. (7) Good electrical performance, insulation resistance is much higher than that of PVC wire (cable), and dielectric loss tangent tan δ It is very small and basically does not change with the change of temperature.