[BTTZ] Copper core cross-linked polyolefin insulated cable (wire)
[RTTZ] Copper core cross-linked polyolefin insulated flexible cable
[BTLY] Copper core cross-linked polyolefin insulated PVC sheathed circular cable
[BBTRZ] Copper core cross-linked polyolefin insulated PVC sheathed flat cable (wire)
• Copper core copper sheath magnesium oxide insulated fire-resistant cable is a new type of cable with seamless copper tube sheath on the outer layer, magnesium oxide crystal powder filled in the middle as insulating material, and conductor composed of single copper rod. It is suitable for: explosion-proof systems and equipment, namely fire hazardous areas, high-temperature occasions, places requiring special fire safety, underground power supply lines, and places with relatively narrow wiring space.
• When the cable is burned at a flame temperature of 950~1000°, it can still keep energized normally for more than 90min. This is because all the materials used to form the cable are inorganic substances (copper and magnesium oxide) without any combustible substances. It neither self-ignites nor supports combustion, releases no heat, no toxic gas and no smoke. Its ignition points are 1083°C and 2800° respectively. Therefore, the fire resistance and fireproof characteristics of this cable are incomparable with other flame-retardant cables and fire-resistant cables. Moreover, fire-resistant cables will lose their fire resistance and cannot continue to supply power after being impacted and sprayed in a burning environment. While the fireproof cable adopts seamless copper tube, the magnesium oxide is fully sealed inside by intermediate connections and terminals, so it will not be affected by impact and spraying and can keep working continuously for more than 3 hours. Therefore, it can ensure the normal progress of personnel evacuation and fire fighting work, effectively protect personal safety and reduce property losses. Therefore, the fireproof cable is the best substitute for fire-resistant and flame-retardant cables.
• The feature of low-smoke low-halogen flame-retardant cable is that the cable not only has flame-retardant performance, but also has smoke suppression and harmlessness (low toxicity and corrosiveness). It is suitable for places with special requirements on cable flame retardancy, smoke density, toxicity index, such as nuclear power plants, tunnels, etc.
• This product is manufactured in accordance with GB/T127061-2008 or C60502 standard, and can also be produced to other standards as required by customers. In addition to the above standards, the flame retardant performance of flame-retardant cables is divided into three different flame retardant categories A, B and C in accordance with GB/T18380.3-2001 standard. Category A has the best flame retardant performance, and customers can select it as required.
• The fire resistance performance of fire-resistant cables complies with the provisions of GB/T19216,21-2003.
• Low-smoke or low (non-) halogen flame-retardant cables are manufactured in accordance with relevant standards. Their flame retardant performance is divided into three different flame retardant categories A, B and C in accordance with GB/1966-2005 standard. The low concentration passes the test specified in GB/T17651-1998, and the P value and conductivity shall comply with the provisions of GB176502-1998.
• Rated voltage Uo/U: 450/750V and 350/500V
• The long-term allowable operating temperature of cable conductors is 90°C.
• The cable laying temperature shall not be lower than 0°. The recommended allowable bending radii are as follows: for cables with outer diameter (D) less than 25mm, the allowable bending radius shall not be less than 4(D); for cables with outer diameter (D) of 25mm and above, the allowable bending radius shall not be less than 6(D).
