Difference between YJV products and flame retardant YJV products
2021-09-15
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The character "ZR" on the label of flame retardant wire and cable in the wire and cable industry means flame retardant. The national standard of flame retardant is GB/T 19666. According to the standard, flame retardant is divided into ABC and three levels. ZA represents A-level flame retardant. ZB represents B-level flame retardant. ZR defaults to C-level flame retardant. If consumers see that ZA symbol is written on the cable label, it represents flame retardant A-level, which is the highest level
Is the testing standard of 1YJV products the same as that of flame retardant YJV products?
Compared with ordinary YJV products, flame retardant YJV products have the characteristics of preventing or delaying the occurrence or spread of flame According to GB/T 19666 Flame Retardant and Fire Resistant Wire, Cable or Optical Fiber Cable General Rules, flame retardant products have ABC grade distinction, and need to pass bundle combustion ABC test respectively. The specific requirements of different grades of combustion test are as follows:
Are the prices of 2YJV products the same as those of flame retardant YJV products?
In order to ensure the flame retardant performance of flame retardant products, the filling material price of flame retardant rock wool rope is increased by 1.5 times per kilogram from ordinary PP filling rope to flame retardant filling rope or flame retardant rock wool rope; The price of wrapping materials from ordinary non-woven fabrics to high flame retardant glass fiber wrapping materials has doubled per kilogram; The oxygen index of outer sheath needs to be increased by 10%-20% compared with ordinary PVC sheath material, and the price of outer sheath material increases by 20%-30% per kilogram The more volume of nonmetallic materials per meter of sample, the longer the supply time of fire source, the higher the requirements for flame retardancy of nonmetallic materials and the higher the corresponding cost increase
To sum up, compared with ordinary YJV products, flame retardant YJV products have better performance, higher cost, higher grade and higher price. The price of ZA products > the price of ZB products > the price of ZC products > the price of ordinary products Customers can pay attention to separately and choose according to their needs
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