Magnesium oxide insulated fireproof cable--BTTZ
Fireproof cable application:
The copper core copper sheathed magnesium oxide insulated cable is called MI cable abroad, and is referred to as mineral insulated cable or fireproof cable in China. It is a modern building wiring cable and special industry (metallurgy, chemical industry) made by special technology using high-conductivity wire as conductor, inorganic magnesium oxide as insulation, and seamless copper tube as sheath (see cable structure diagram). , oil, etc.) with cables. Due to the particularity of its material and structure, it is determined that the product has electrical properties, mechanical properties, environmental resistance and environmental protection properties that are unmatched by organic cables (plastic cables).
Don't just think that the cable is a cable that is resistant to high temperature or fire. "Fireproofing" is just one of its intuitive properties. Non-combustible, explosion-proof, anti-corrosion, waterproof, anti-magnetic, anti-mechanical damage (including animal bites), large current carrying capacity, strong overload capacity, etc., the effect of any one is far better than that of plastic cables. This cable is a real green and safe product. Compared with the most "environmentally friendly" halogen-free and low-smoke plastic cables, mineral insulated cables not only have great improvements in electrical properties and mechanical properties, but also truly realize halogen-free, smoke-free, non-toxic, and completely eliminate halogen-free cables. The residual toxins in the low-smoke plastic cable completely overcome the "secondary disaster" caused by the smoke and toxicity produced by the flame combustion of the halogen-free low-smoke plastic cable when multiple cables are laid. It is a collection of the performance advantages of plastic cables. As long as you choose a mineral insulated cable, you can enjoy the security and peace of mind that plastic cables cannot share. This product is no longer mainly used in fire protection systems. Due to its superior performance and price ratio, it has become the development direction to replace products such as halogen-free low-smoke cables, fire-resistant cables, flame-retardant cables, and bus ducts (with a capacity of 1500A and below).
The main function:
Fire and explosion proof• Waterproof• High temperature• Radiation resistance and electromagnetic interference resistance• High mechanical strength• Good grounding performance• Halogen-free, smoke-free, non-toxic• Strong corrosion resistance• Large current carrying capacity and strong overload capacity• Small size and light weight ,long life.
1. The rated voltage of the mineral insulated cable; light load (BTTQ, BTTVQ, WD-BTTYQ) 500V and heavy load (BTTZ, BTTVZ, WD-BTTYZ) 750V.
2. Mineral insulated cable finished test voltage; light load 2000V/1min, heavy load 2500V/1min
3. The insulation resistance of the mineral insulated cable should be greater than 1000MΩ, and when the cable length is less than 100m, the insulation resistance should be greater than 10000MΩ;
4. The long-term working temperature of mineral insulated cables; the long-term working temperature of mineral insulated cables is 70 °C, and the long-term working temperature of mineral insulated cables is 105 °C in untouched occasions. In special high-temperature occasions, the long-term working temperature can be 250 °C and the following.
It can continuously supply power for more than 3 hours at 950-1000 °C, and the working temperature can reach 1083 °C in a short or very short time.