How to recognize the authenticity of mineral insulated cable fireproof cable?

I. How to identify the authenticity of mineral insulated cable fire prevention cable? Mineral insulated fireproof cable as a building engineering fire protection system power transmission, its safety and reliability requirements are very high; it is the lifeline of rescue when a fire occurs, but now the cable industry market is a mixed bag of good and bad, fierce competition among peers, overcapacity, so that unscrupulous businessmen know how to crooked brain; how to distinguish the authenticity of fireproof cable?1. Mineral cable. Now the civil building fire design code requires the fire system cable using mineral insulated cable, according to the structure is divided into rigid mineral insulated copper sheathed cable and flexible mineral insulated copper sheathed cable, also known as fire prevention cables in the country, with annealed copper as the conductor. Dense magnesium oxide as insulation. Annealed copper tube as the sheath of the cable. If necessary, in the annealed copper sheath outside the extrusion of a layer of plastic outer sheath. In smoke and halogen-free occasions, can be in the outer layer of low smoke and halogen-free sheath. 2, mineral insulated fire-retardant cable identification. (1). Mineral insulated cable rated voltage above 500/750V, belongs to the scope of the production license, does not belong to the scope of the 3C certification. 3C certification refers to 450/750V 750V voltage level below the wire and cable, mandatory certification, so you can see whether the business license of the enterprise on the wire and cable production license project. (2). Mineral insulated cables have wire and cable quality inspection center special quality certification department. Relevant mineral cable manufacturers in the user to order mineral insulated cable, should take the initiative to produce qualified test reports. (3). At present, only BTTZ and YTTW have standards for mineral cable models, and the rest only have industry standards or enterprise standards. (4). Mineral insulated cables due to high technology content, especially BTTZ mineral insulated copper core copper sheath cable, using copper pipe drawing annealing technology, only a few large cable companies can produce domestic, better visit the production line. (5). Check whether through the British BS6387CWZ higher standard testing, belong to the international standard of mineral insulated cable. (6). Generally from the cable structure, mineral cable needs metal sheath, only BBTRZ flexible mineral cable does not contain metal sheath.3. Status of mineral insulated cables. To distinguish the quality of mineral insulated cables, users first need to improve the level of understanding of mineral cables, not just look at the surface information; from the side of the cable companies and their reputation in the cable industry and other important information, do not be greedy for cheap, the cable price fluctuates every day according to the price of copper; in particular, if the price of mineral cables is lower than the market price of the so-called pennies; if the quality of the unqualified, it will be buried in the future security risk, the consequences are more serious.

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