Low-voltage cable BTTZ power cable
The BTTZ cable is a new type of cable featuring a seamless copper tube as the outer sheath, magnesium oxide crystal powder as the insulation material, and a single copper rod as the conductor.
It features high-temperature resistance, flame and explosion-proof properties, non-combustibility (can operate continuously for long periods at 250°C and for 30 minutes at 1000°C), high carrying capacity, small outer diameter, high mechanical strength, and long service life, generally requiring no separate grounding conductors.
Widely used in nuclear power plants, metallurgy, chemical industry, mines, kiln manufacturing, and other hazardous, severe, and high-temperature environments. In recent years, it has also been increasingly applied in high-rise buildings, airports, ports, underground rail systems, and other locations to ensure continuous operation of fire pumps, fire elevators, local lighting, emergency evacuation signage, security surveillance, fire prevention and smoke exhaust systems, and self-generated power sources, among other critical equipment, in the event of a fire.
Key Advantages of BTTZ Cable
1) Fully Flame Retardant - The BTTZ cable itself does not burn and will not ignite a fire source. Even under flame-grilling conditions, as long as the flame temperature is below the melting point of copper, the cable can continue to be used without replacement after the flame is extinguished. No toxic smoke or gases are produced when exposed to flames.
2) Strong overload protection capability: When the circuit is overloaded, the cable will not be damaged as long as the heat does not reach the melting point of copper. Even if there is an instant breakdown, magnesium oxide crystals at the breakdown point will not form carbides. After the overload is removed, the cable's performance will not be altered, and it can continue to be used normally.
3) High Operating Temperature - Due to the magnesium oxide crystal insulation having a melting point significantly higher than copper, the normal operating temperature of the cable can reach up to 250°C, and it can continue to operate for short periods at temperatures close to copper's melting point of 1083°C.
4) Excellent Corrosion and Explosion-Proof Performance - Due to the use of seamless copper tubes as sheath, the BTTZ cable boasts resistance to water, moisture, oil, and some chemicals. The copper tube offers considerable mechanical strength, thereby providing good explosion-proof properties.
5) Long Service Life - All BTTZ cables are made of inorganic materials, thus eliminating insulation aging, and their service life can exceed that of ordinary cables by up to three times.
6) Enhanced Laying Flexibility: BTTZ cables can be laid on bridge structures alongside standard cables and can also be installed using dedicated brackets for exposed laying. This offers greater flexibility compared to standard cable laying and saves on cable tray investments, potentially reducing the overall project cost.
