Difference between flame-retardant cable and fire-proof cable and precautions for fire prevention of cable (ZR is flame-retardant)

First, the difference between flame-retardant cables and fire-resistant fire-resistant cables 

For flame-retardant cables, we require the IEC-332-1-2-3 standard at minimum, and the corresponding specification for fire-resistant and fire-resistant cables is IEC-331. The contents of the two assessments are different. 

(1) The fire-resistant fire-resistant cables and fire-retardant fire-proof cables have different technical structures and different functions. 

(2) Flame-retardant fire-retardant cables shall have flame-retardant functions in addition to their own use in practice, but they shall have flame-retardant functions, and fire-retardant and fire-resistant cables may not necessarily have fire-resistant functions. 


(3) Therefore, the use of fire-retardant and fire-retardant products is not an alternative to fire-resistant and fire-resistant cables. 

When looking at advertisements and product sample data, we should carefully study and analyze them carefully. Don't be fooled by advertisements or exaggerated propaganda. For example, some manufacturers advertise that cables have a long life span and are overloaded, which is 100 times the normal current carrying capacity. Do you dare to use it? It is hoped that these manufacturers will develop their own proprietary technologies and produce true fire-resistant fire-resistant cables, which will be sent to the National Fireproof Building Materials Quality Supervision and Inspection Center for formal inspection and testing according to standards. 

Third, the characteristics of flame-retardant fire-resistant fireproof cable 

At present, the German fire protection cable production plant has been able to produce pre-branched fire-retardant fire-resistant fire-resistant cables, regardless of the number of branches, the length of how much, do not need intermediate connectors and cable terminations. One-time delivery facilitates work on the construction site and meets our requirements: 

(1) The product has passed the national wire and cable quality supervision and inspection center and passed the test; passed the international standard of the British Standards Association (BS-6387c.wz), all tests pass, and the fire resistance standards are evaluated as follows: 

I. 950 °C flame power 180min without breakdown; 

II. Spraying with water at 650°C for 15 minutes without breakdown; 

III. Under 650°C flame, it withstands 15 minutes of knocking vibration without breakdown.