BTTZ mineral insulated cable is superior to other types of mineral insulated cable in all aspects. Its product performance characteristics are as follows: 1. Fire prevention, because BTTZ mineral insulated cables are all made of inorganic substances (metal copper and magnesium oxide powder), so it will not cause fire itself, nor will it burn or support combustion. Since the melting point of copper is 1083 ° C, the melting point of the magnesium oxide insulating layer is 2800 ° C. Therefore, BTTZ mineral insulated cable can continue to maintain normal power supply in a fire environment, as long as the temperature does not exceed the melting point of copper, it is a true fire-proof cable. And can pass BS6387 C, W, Z test.
Second, the current carrying capacity is large and waterproof. Since the actual normal temperature of the mineral insulated cable can reach 250 ℃, IEC60702 stipulates that the continuous working temperature of the mineral insulated cable is 105 ℃. This is considering the terminal sealing material and safety needs. Ampacity is far more than other cables, because mineral insulation has better thermal conductivity than plastic, so the same working temperature, ampacity is greater. For lines above 16 square millimeters, one cross section can be reduced, and where no human contact is allowed, two cross sections can be lowered.
3. Explosion-proof, corrosion-resistant and explosion-proof characteristics: Since the mineral insulated cable uses a metal sheath as a protective layer, flammable gas, oil vapor, and flame cannot reach electrical equipment connected to the cable, so the cable has explosion-proof characteristics. Corrosion resistance: Because copper has good corrosion resistance, it does not require any additional protection under normal use. Under special environmental conditions, such as an environment with strong corrosion effect on copper, the cable is then A layer of PVC outer sheath is added, so the cable has good corrosion resistance.
Fourth, resistant to mechanical damage, long life, halogen-free and non-toxic. Resistance to mechanical damage: due to the strength and toughness of the metal sheath of the cable, when the cable is subjected to bending, flattening, torsion and other deformations, the relative positions between the core wires and between the core wires and the sheath remain unchanged, There will be no short circuit and no impact on electrical performance. Long life: Because all the materials used in the cable are inorganic materials, they do not age. Its service life can be calculated according to the rate of oxidative corrosion of the copper sheath. The data shows that the sheath is oxidized to 0.25 mm, and it takes 257 years at an ambient temperature of 250 ° C. The thickness of the sheath of mineral insulated cables is generally between 0.34-1.05, and the use temperature is below 250 ° C, so the cable Has the characteristics of long life. Halogen-free and non-toxic: Since the cables are all made of inorganic substances (metallic copper and mineral insulation), they will not produce smoke, halogen and toxic gases even when burned at a high temperature of 1000 ° C. It is truly halogen-free and non-toxic cable.
5. Overload resistance, copper sheath can be used as a ground wire. Overload resistance: As the melting point of copper is 1083 ℃ and the melting point of mineral insulation layer is also above 1000 ℃, the current-carrying capacity of mineral insulated cable can be increased by a cross-sectional level compared with ordinary plastic cables, and it can withstand considerable overload and overload The capacity can reach more than 10 times the normal current carrying capacity. The copper sheath can be used as a ground wire: for mineral insulated cables, due to the continuity of the copper sheath and the extremely low ground resistance, it can be used as a ground wire, and no separate ground wire is required.
Six, product use: due to the excellent performance of mineral insulated cable, it is suitable for fire protection of rated voltage 1000V and below, in the following lines, such as: general lighting, emergency lighting lines, emergency broadcasting lines, emergency elevators and lifting equipment lines , Fire alarm control lines, computer room control lines, fire electrical lines, generator room transmission lines, uninterruptible power supply lines, dual power control lines, public place lighting lines, main / sub-mains distribution system lines, scenic spots and historic sites lighting lines , High-temperature environmental power and control lines, oil pump lines, potentially dangerous explosion area lines
The above is the whole content of "What are the product characteristics of BTTZ mineral insulated cable", if you want to know more related information, please enter our Central Asia Cable-, customer service consultation, we will be happy to answer for you, to your satisfaction.
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