At present, mineral insulated cables have been widely used in high-rise buildings, petrochemicals, airports, tunnels, ships, offshore oil platforms, aerospace, iron and steel metallurgy, shopping malls, parking lots and other occasions. Compared with ordinary cables, mineral insulated cables have better durability, reliability and fire resistance, mineral cable continuous working temperature of 250 ℃, in 950 ℃ - ℃ can continue to supply electricity for a hundred hours, short time or extraordinary period can be close to the melting point of copper ℃ work, applicable to the rated voltage of V below the line. And the micc cable carrying capacity of large, water, explosion-proof, corrosion-resistant, high working temperature, corrosion resistance, overload protection, so its life is also longer than normal cable! ZW is a leading mineral insulated cable manufacturers. We have more than 10 years on manufacturing different mineral insulated cable sizes.
● No combustion, no support of combustion, no emission of toxic gases, zero combustion energy;
● Mineral insulated cable termination and intermediate connector are supplied with the cable, increasing the fire resistance reliability of the cable;
● Mineral cable can withstand extreme temperatures, falling objects and fire water spray in a fire;
● Micc cables can be used at high temperatures;
● Micc cable can be used at high temperatures;
● They are non-aging and are extremely stable;
● The metal sheath of the cable can be used as a grounding circuit;
●The metal jacket of the cable can be used as an earthing circuit;
● Due to the special structure of the cable, its load capacity is large;
● Excellent electromagnetic shielding and EMC performance;
● It can be protected against animal bites.
(1)Long service life: 100 years.
Inorganic materials used in mineral insulated cables can ensure the stability, long life and fire resistance of the cable.
(2) Small outer diameter: small cable diameter, easy to install, low comprehensive cost, cable without tube protection.
Mineral insulated cables have a smaller diameter than other cables with the same current rating.
(3) Short circuit fault rating
At the same temperature, the short-circuit fault rating of mineral insulated cables is significantly higher than that of other types of cables.
(4) Explosion-proof: good performance in explosion-proof and excellent performance in nuclear radiation resistance.
The highly compacted insulation material in mineral insulated cables prevents the passage of vapors, gases and flames between the equipment parts connected to the cable.
(5) Large load capacity
For the same cable cross-section, mineral insulated cables transmit higher currents than other types of cables. At the same time, mineral insulated cables can also withstand considerable overload.
(6) high operating temperature: continuous operating temperature up to 250 ℃, short-term operating temperature up to ℃.
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Mineral insulated cables can withstand continuous operation temperatures up to 250°C. However, in an emergency, the cable can continue to operate for a short period of time at a temperature close to the melting point of the copper jacket.
(7) Waterproof, moisture-proof, oil-resistant, corrosion-resistant
If the mineral insulated cable is completely immersed in water, the mineral insulated cable can continue to operate with the help of its seamless metal sheath.
(8) high mechanical strength: excellent mechanical strength, good bending performance, can be used in complex structures, space is limited installation environment.
Mineral insulated cables are strong and durable, and can withstand severe mechanical damage without compromising their electrical properties.
(9) High corrosion resistance
The copper sheathing of mineral insulated cables is highly resistant to corrosion, and for most installations, it does not require additional protective measures. Where the copper jacket of the cable is susceptible to chemical corrosion or heavy industrial contamination, a plastic outer jacket should be used to protect the mineral-insulated cable.
(10) Fire resistance: excellent fire resistance, reusable cable after a fire.
The two materials used in mineral insulated cables, copper and magnesium oxide, are inorganic. These cables do not burn, do not ignite, and can continue to operate in conditions close to a flame. The copper jacket is melted at ℃, while the magnesium oxide insulation material is cured at ℃.
(11)Grounding
For mineral insulated cables, a separate ground conductor is not required, as the copper jacket used for this cable already acts as a ground conductor and provides an excellent low ground resistance. For ground-sheath circuit wiring, the outer copper jacket is used as both ground and neutral conductor in multiple ground neutral systems.
Due to excellent characteristics of mineral insulated cables, more and more customers choose mineral cable according cable project. If you want to know mineral insulated cable price and micc cable price, please contact us. We promise to provide the qualified products for our customers.
Mineral insulated (MI) cable, also known as magnesium oxide cable or fireproof cable, is a copper core copper sheathed cable insulated by mineral material magnesium oxide powder.
Mineral insulated cables have unparalleled advantages compared to other cables, such as fire prevention, large carrying capacity, mechanical damage resistance, halogen-free and non-toxic, explosion-proof, waterproof, corrosion resistance, long life, safety, overload resistance, high temperature resistance, termite resistance, and Rat bite, small cable bending radius, copper sheath as protective grounding wire, low cost and so on. Its use in the fire protection system provides a reliable guarantee for the normal operation of the fire protection system.
Structural principle: Mineral insulated cables are composed of mineral material magnesium oxide and metal material copper, and the magnesium oxide insulating material is highly compacted in the seamless copper sheath, forming a dense body together with the core and the sheath. The melting point of magnesium oxide insulation material is as high as °C. Below this temperature, its insulation performance will not change significantly, while the melting point of copper is °C. As long as the melting temperature of copper is not reached, the cable will not be damaged and can still continue to work. run.
Fire resistance: The fire resistance of mineral insulated cables meets the fire resistance time of 950 °C and 180 min specified in the product standard. Many fire scenes have also fully proved that after the fire, among all the cables, only the mineral insulated cables are still intact.
High temperature resistance, no aging: Mineral insulated cables can be used continuously for a long time at 250 ℃, with a life span of more than 250 years. Since the cables are all composed of inorganic materials, they are extremely difficult to age, and will not cause and spread fire, which is an essential Safe product.
Smoke-free, halogen-free, radiation-resistant: In the case of overload or fire, the mineral insulated cable itself will not release any harmful gas and smoke, and the light transmittance reaches 100%, which is very important for ensuring the safe evacuation of personnel under fire conditions It is very important; it can also ensure that houses and equipment are not damaged by acid gas. It is an environmentally friendly cable. Since the entire structure of the cable is made of inorganic materials, there will be no change after irradiation, so it is especially suitable for the environment of nuclear radiation; also due to the structural characteristics of the seamless copper sheath of the cable, it can provide very good shielding for electromagnetic induction Effect.
Large carrying capacity and strong overload resistance: For cables with the same cross-section, mineral insulated cables have higher carrying capacity than other types of cables due to their high thermal conductivity, good heat dissipation and higher operating temperature; Organic cables must be protected by bridges or sleeves in power distribution to prevent heat dissipation and reduce the ampacity of the conductors. In this way, under the same ampacity conditions, the mineral insulated cables can reduce the cross-sectional area by more than 1 to 2 grades compared with ordinary organic cables. use. In addition, the melting point of magnesium oxide, the insulating material of mineral cables, is °C, which can withstand more than 10 times the high current without being burned.
Overvoltage resistance: Overvoltage will break down the cable. For organic cables, the insulation at the breakdown point will be burnt to form a carbon path, making the cable scrapped; and even if the mineral insulated cable is broken down, it will be used as the oxidation of the cable insulation layer. Magnesium, the breakdown point will automatically solidify after melting, basically will not reduce the withstand voltage level of the cable, and the cable can still be used after passing the test.
Corrosion resistance and mechanical damage resistance: Copper has excellent corrosion resistance, and in most cases, no additional protective measures are required; in special cases, such as when used in some occasions that corrode the copper sheath of the cable , a layer of plastic jacket can be added outside the cable. Because the copper sheath of the cable has a certain strength and toughness, and the magnesium oxide is compressed by high strength during the cable processing, so when the cable is subjected to bending, flattening, and torsion, the cable core wire, the core wire and the sheath The relative position between remains unchanged, and no short circuit will occur.
With the successful development of mineral insulated cables, its scope of use will become more and more extensive. At the same time, the use of mineral insulated cables also protects the safety of people's lives and properties.
The company is the world’s best Mineral Insulated Copper Cable supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.