What is a flexible mineral insulated cable and what are the advantages of a mineral insulated cable?

The invention of flexible mineral insulated cable (BBTRZ) is relatively late, about the seventies of the last century was born in the Swiss Stuart cable company, the earliest and latest flexible mineral insulated fireproof cable in China in 2003 by Shanghai Kuailu wire and cable **** launched.

Compared with traditional rigid mineral insulated cables, flexible mineral insulated cables are composed of copper stranded wires, mineral compound insulation, and mineral compound sheaths. It adopts flexible structure, and the main materials are inorganic materials, which make up for the defects of hard structure, flammability, toxicity, etc., and has some advantages that other cables do not have, such as: fire resistance, large current carrying capacity, impulse voltage resistance, mechanical damage resistance, halogen-free and non-toxic, explosion-proof, waterproof, corrosion-resistant, long life, safety, overload resistance, high temperature resistance, low cost and other characteristics.

In fact, it is a derivation of "fire-resistant cable", that is, after winding the strip outside the stranded conductor, a layer of weldable and rolled copper strip is longitudinally wrapped as the cable sheath.

If the cable is also called a "fireproof cable", its cable structure has two Achilles' heels: one is after the insulation layer is made of ribbons. In the event of a fire, the ribbon in the cable will become a powder, which will easily fall off and cause the core to collide with the core, and the core with the copper sheath.

Second, the sheath is welded and embossed with copper strip longitudinal wrapping. The copper strip will harden after mechanical deformation (crimping), and the weakness of the first strip will cause the cable to be unable to regain the flexibility of the copper strip by annealing, which is contrary to "flexibility". Through the analysis and exploration of the structure, characteristics, electrical characteristics, fire resistance characteristics and environmental protection characteristics of the two kinds of cables, the advantages and disadvantages of the two kinds of fireproof cables are fully explained.

Summary. Hello dear! Glad to answer for you :

Mineral cable flexible 5 6 is a wire and cable product with the following characteristics:1It is flexible, easy to bend and install, and is suitable for the arrangement of various occasions.

2.High temperature resistance, fire resistance, corrosion resistance, high stability and reliability in harsh environments. 3.

The conductor is made of copper wire, which has good conductivity and low resistance. 4.The insulation layer is made of high-quality refractory materials such as asbestos fiber and aluminum silicate fiber, which has good insulation performance and durability.

5.It is suitable for power transmission and control systems in various high-temperature, high-pressure, and flammable occasions. In a word, Mineral Cable Flexible 5 6 is a high-quality wire and cable product that can meet the needs of electrical equipment in various industrial fields.

How is the mineral cable flexible 5 6.

Hello dear! Glad to answer for you: Mineral Cable Flex 5 6 is a wire and cable product with the following characteristics:

1.It is flexible, easy to bend and install, and is suitable for the arrangement of various occasions. 2.

High temperature resistance, fire resistance, corrosion resistance, high stability and reliability in harsh environments. 3.The conductor is made of copper wire stranding, which has good conductivity and small resistance.

4.The insulation layer is made of high-quality refractory materials such as asbestos fiber and aluminum silicate fiber, which has good insulation performance and durability. 5.

It is suitable for power transmission and control system in various high-temperature, high-voltage and flammable occasions. In a word, Mineral Cable Flexible 5 6 is a high-quality wire and cable product that can meet the needs of electrical equipment in various industrial fields.

Can it be worn inside a steel pipe?

Steel pipes with elbows.

It can be worn inside the steel pipe, but it should be noted that the diameter of the curved semi-field key of the cable should not be too small, so as not to damage the electric lead cable. At the same time, when laying cables in the pipeline, it is necessary to take into account the problem of heat dissipation to avoid potential safety hazards caused by overheating of the cable.

Mineral insulated cable is a kind of copper conductor core wrapped with a copper sheath, because all the materials of this cable are inorganic materials, so it has some advantages that other cables cannot have. The following Pacific Cable will introduce you to the advantages of mineral insulated cables, which one do you pick.

1. Fire-resistant. The two materials used in mineral insulated cables, copper and mineral insulation, are inorganic. The cable does not burn or support combustion, and can continue to operate in close proximity to flames. The copper sheath melts at 1083.

2. High operating temperature.

Mineral insulated cables can withstand continuous operating temperatures up to 250 °C. And, in the event of an emergency, the cable can continue to operate for a short time at a temperature close to the melting point of the copper sheath.

3. Long life.

The inorganic materials used in mineral insulated cables guarantee the stability, long life and fire resistance of the cable.

4. Explosion-proof.

Highly compacted insulation in mineral insulated cables that prevents steam, gases, and flames from passing between the parts of the equipment connected to the cable.

5. Small outer diameter.

Mineral insulated cables have a smaller diameter than other cables with the same current rating.

6. Waterproof. 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.

7. High mechanical strength.

Mineral insulated cables are robust and can withstand severe mechanical damage without compromising their electrical properties.

8. Large current carrying capacity.

For cables of the same cross-section, mineral-insulated cables transmit higher currents than other types of cables. At the same time, mineral-insulated cables can withstand considerable overloads.

9. Short-circuit fault rating.

At the same temperature, mineral insulated cables have significantly higher short-circuit fault ratings than other types of cables.

10. Grounding.

For mineral insulated cables, a separate grounding conductor is not required, as the copper sheath used in this cable already acts as a grounding conductor and provides a good low grounding resistance. In the case of Ground Skin Circuit (ESR) cabling, in MEN (Multi-Ground Neutral) systems, the outer copper sheath can be used as a ground and neutral conductor.

11. High corrosion resistance.

The copper sheath of the mineral-insulated cable is highly corrosion-resistant, and for most installations, it does not require additional protective measures. Where the copper sheath of the cable is susceptible to chemical corrosion or severe industrial contamination, a plastic outer sheath should be used to protect the mineral insulated cable.

The national standard for flexible mineral insulated cables is GB T Zejing insulated cables for overhead power lines and their accessories. The standard stipulates the type, size, structure, performance requirements, test methods, inspection rules and signs, packaging, transportation and storage of insulated cables and accessories for overhead power lines. Among them, flexible mineral insulated cable is a kind of overhead power line insulated cable, and its specific requirements can be found in this standard.

It is important to note that standards may vary from country to country or region, and the applicable standards should be selected based on the actual use of Sun Hoshin.

What are the cable accessories of mineral insulated wires and cables, including laying accessories, intermediate connection accessories, terminal accessories and sealing and insulation accessories. The laying accessories are mainly cable clips for cable fixing and cable hooks for overhead laying. The cable clip can be fixed with other cables, or it can be fixed with copper clip or plastic copper wire and iron wire.

The copper clip is made of flat copper strip, the thickness depends on the size of the cable section, there are 1 2mm and so on, which can be matched by the cable merchant or made by yourself. The number of embedded parts can be estimated according to the fixed spacing and fixing method of the cable. Intermediate connection accessories are used for cable intermediate connections, and their specifications should be selected according to the specifications of the mineral insulated cable used.

Several sets of intermediate connection accessories are required for a line with several intermediate connectors. Terminal accessories are used for connection and fixing at both ends of the line, and their specifications should also be selected according to the specifications of the mineral insulated wires and cables used. Two sets of terminal accessories are required for each line.

Confession roll-off insulation accessories are used for sealing and insulating mineral insulated cables, cable intermediate joints and terminations. The quantity is matched by the cable supplier. Refers to the anterior ante.