Regulate national standards to strengthen fire safety cable

International standards on the line cable fire rating on the basis of the cable is mainly based on the spread of the fire after the fire, burning time, heat and smoke release, the release of toxic gases and other indicators to test the situation. At the national standard level, on the issue of cable fire also make a corresponding explanation, and further standardize the level of fire cables, in order to meet the higher demand in the domestic market.
From international standards to national standards
For the cable fire and fire prevention problems, the United States has the international UL series, the International Electrotechnical Commission IEC60332 series, the EU's EN50399 and EN50265 series standards, these are the test standards.
In the United States, according to the UL test standard, the cable is divided into CMX (lowest level), CM, CMR and CMP (vertical use) (the use of forced ventilation environment) 4 levels, a detailed description of the cable needs to prevent flame spread. Among them, the flame retardant grade of CMP cable is the highest. These international standards are widely used in the cable market.
National standard GB50311-2007 "integrated wiring system engineering design code" is currently one of the most important national standards in the field of integrated wiring. The special specification will "fire" specification alone as an independent chapter, divided into two parts to be introduced, which shows the degree of attention to the national standard of cable fire.
According to the "standard" fire and content, can be seen in the national standard reference international test standard basis, put forward to, comprehensive consideration of the requirements in terms of fire rating, and the height of the building, building area, function and importance. Although the specific provisions are relatively simple, but it has pointed out the importance of cable fire prevention, fire retardant cable for the promotion of the domestic market has important guiding significance.
Market concept need to follow up
As the building of the underlying infrastructure, a high level of flame retardant cable, emit toxic gases and less acidic gases in the combustion, heat and smoke less, are essential for building fire safety, personnel, information and equipment.
In this context, the cable fire problem by domestic users and design more and more give full attention to high grade fireproof cables, especially CMP cable, used in the domestic market gradually open up the situation. More and more domestic projects, especially data centers, airports, hospitals, libraries, museums and other key units of fire has also been a case of CMP cable deployment. In the planning and design of the project, with a long-term vision of users and design units, is based on the needs of the industry and social development, the choice of high-grade fire cable products. In fact, in view of the domestic market of high-grade fire retardant cable market, many suppliers are actively engaged in production and research and development.
Today, the formal implementation of the GB50311-2007 standard, has been in the past 5 years, the state has adopted the revised standard of the project, will be formally implemented in 2013 the preparation of the new national standard. To be sure, the cable fire problem will remain as one of the key content of the new national standard, to make a more detailed specification. It can be expected that with the introduction of the new national standard, high-grade fire retardant cable will get better development opportunities in the domestic market.