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Mineral insulated cables
Mineral insulated cable (Mineral Insulated Cable) is abbreviated as MI cable. When used as wiring, it is customarily called magnesium oxide cable or fire-resistant cable in China. Mineral insulated cables were developed earlier in foreign countries. As early as the end of the 19th century, a Swiss engineer Arnold Francois Borel proposed the idea of ​​mineral insulated cables, which was patented in 1896. After being put into production in France and Britain in 1934-1936, they developed rapidly. The major industrial countries, Italy, Canada, Australia, the United States, the United States, the Soviet Union, and Japan, have been developed and put into production one after another. my country also developed and produced in the 1960s, and began mass production at the end of the 20th century. In the 21st century, it entered the national fire protection design code and was widely used in China.
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This product is suitable for a metal sheathed inorganic mineral insulated fireproof cable with a rated voltage of 0.6/1kv and below. It uses multi-stranded copper wire as the conductor, inorganic mineral insulating tape for insulation, and a metal copper tape welded tube as a sheath. When necessary, a layer of plastic outer sheath is squeezed out of the metal copper sheath; when special requirements are smoke-free and halogen-free, a low-smoke, halogen-free sheath can be added to the copper sheath.
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This product is suitable for transmission of electric energy in power lines with a rated voltage of 0.6/1KV and below. It is difficult to catch fire and has the ability to prevent or delay the spread of flames. It is used for laying in a variety of occasions where cables have flame-retardant requirements, such as high-rise buildings, hotels, hospitals, subways, nuclear power plants, power plants, ore, petroleum, and chemical industries. Plastic fire-resistant cable, also known as isolated fire-resistant cable, is a layer of odorless, non-toxic, halogen-free mineral compound material between the insulated core (outer diameter of the cable) and the outer sheath of the cable. When the cable is subjected to a fire, a large amount of crystal water is formed by filling and chromatography. When the flame temperature is lowered, the hydroxide is dehydrated into an infusible and non-combustible inorganic hard shell, which blocks the oxygen supply channel and achieves a high level of fire resistance. .
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This product is suitable for fire control, fire linkage, fire alarm and fire power lines with a rated voltage of 0.6/1KV and below. It can withstand combustion at 950℃ for 3 hours under a load of 1000V. It is also resistant to water spray and The function of mechanical shock. Product implementation standard: This product is applicable to the company's corporate standard Q/JS12.11-2015 "Rated voltage 1kV (Um=1.2kV) mineral composite insulated aluminum sheathed protective isolation flexible fireproof cable", a normative reference document in the corporate standard Including: GB/T 12706.1 "Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cables and accessories Part 1: Rated voltage 1kV (Um=1.2kV) to 3kV (Um=3.6 kV) Cable", GB/T 13033 "Mineral insulated cables and terminals with rated voltages up to and including 750V", GB/T 17650 "Test methods for gas release when the materials of cables or optical cables burn", GB/T 18380 "Cable box and optical cable Combustion test under flame conditions" and BS 6387-2013 "Performance requirements for cables to maintain circuit integrity under flame conditions". To Description of    mineral composite insulated aluminum sheathed protective isolation type flexible fireproof cable Mineral composite insulated aluminum sheathed protective isolation type flexible fireproof cable is a kind of high fireproof fire-resistant cable. It is filled or wrapped between the insulated core (outer diameter of the cable) and the sheath of the cable. Halogenated mineral composite materials or ceramic silicone rubber materials. When the cable is exposed to fire, the filling layer or the cladding layer will quickly crust. The crust is very hard and dense. It will not melt, drip, fall off, and cause no flame at 350-1600°C. In the second fire, a hard ceramic armor can be fired. The higher the temperature and the longer the firing time, the harder the ceramic armor will be. The honeycomb-shaped micropores formed during the sintering process of the ceramic armor can play a very important role. Good fire insulation, heat insulation, and temperature insulation effects, to achieve high-level fire resistance, and at the same time, the use of metal aluminum sheath protection greatly improves the ability of the cable to resist spray water in the event of a fire. It is a domestic flexible fire-resistant cable The lowest cost, the strongest fire resistance and the most stable safety cable.  product structure      Delivery length  The delivery of the cable requires the delivery of the entire cable. In principle, no or fewer joints are used. When purchasing, specify the construction length requirements (ie delivery length) to the manufacturer.  If a joint is necessary, the fire resistance of the joint should be the same as that of the cable, that is, it must also meet the requirements of BS6387.   Packaging mark and transportation   1. The cable can be packaged in coils or coils. When using reel packaging, the cable should be properly packaged on the cable reel for delivery, the length of the cable extension should not be less than 300mm, and the end should be reliably sealed with a cable jacket.  2. When packaging in a reel, a product quality certificate should be attached to each cable package. The certificate should be placed in an impermeable bag and fixed on the side of the cable reel. The outside of each cable reel shall be marked  A, the name or trademark of the manufacturer i   b. Cable model and specification i  C, length im  D, manufacturing date year and month  E, standard number i  F, gross weight i kg.   g, a symbol indicating the correct direction of rotation of the cable reel.   3. Transportation and storage  A. The wire reel is not allowed to be laid flat i  B. It is strictly forbidden to drop the cable reel containing the cable from a high place during transportation, and it is strictly forbidden to damage the cable mechanically.       c. It is strictly forbidden to lift several trays at the same time when hoisting packages. On vehicles, ships and other transportation tools, the cable reel must be placed firmly and fixed with a suitable method to prevent mutual collision or overturning.
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