Mineral-insulated Copper Cable from China manufacturer - Beijing Tianyuan Rongli Technology Co., Ltd.

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Product Category

Product Features

Advantages

Application Areas

Product Features

Fireproof

Since the cable is entirely composed of inorganic materials (copper and magnesium oxide powder), it does not cause fires, cannot burn or promote combustion. With copper's melting point at 1083°C and the mineral insulation layer also above 1000°C, this type of cable can continue to supply power even in fire conditions close to copper's melting point, making it a truly fireproof cable. It can pass the BS6387 C, W, Z tests.
Test items
IEC331
GB/T19216 level
BS6387
Combustion
750°C, 3h
750°C, 90min
Class A 650°C, 180min Class B 750°C, 180min Class C 950°C, 180min Class D 950°C, 20min
Spray
None
None
Class W 650°C, 15min
Mechanical impact
None
None
Class X 650°C, 15min Class Y 750°C, 15min Class Z 950°C, 15min
High current-carrying capacity, waterproof

Mineral insulated cables can operate at actual normal temperatures up to 250°C. According to IEC60702, the continuous operating temperature for mineral insulated cables is 105°C, taking into account the need for terminal sealing materials and safety. Even so, their current-carrying capacity is still far greater than other cables. Since mineral insulation has a better thermal conductivity than plastic, the same operating temperature allows for a higher current-carrying capacity. For circuits above 16mm2, one cross-section can be reduced, and for areas where human contact is not allowed, two cross-sections can be reduced.
Explosion-proof, corrosion-resistant

Explosion-proof characteristics: Since mineral insulated cables use a metal sheath as a protective layer, flammable gases, vapors, and flames cannot reach the electrical equipment connected to the cable, thus giving the cable explosion-proof characteristics.
Corrosion resistance: Since copper has good corrosion resistance, no additional protection is needed under normal usage environments. In special environmental conditions, such as those with a strong corrosive effect on copper, an additional PVC outer sheath is added to the cable, giving it excellent corrosion resistance.
Resistant to mechanical damage, long life, halogen-free and non-toxic

Resistant to mechanical damage: Since the cable's metal sheath has a certain degree of strength and toughness, the cable can withstand bending, flattening, twisting, and other deformations without changing the relative positions of the core wires and between the core wires and the sheath. It will not cause short circuits or affect electrical performance.
Long life: Since all materials used in the cable are inorganic, they do not age. Its service life can be calculated based on the rate of oxidation corrosion of the copper sheath. Data shows that with a sheath oxidation of 0.25mm, it would take 257 years at an environmental temperature of 250°C, while the sheath thickness of mineral insulated cables is generally between 0.34-1.05mm, and the operating temperature is lower than 250°C, so the cable has a long life characteristic.
Halogen-free and non-toxic: Since the cable is entirely composed of inorganic materials (metal copper and mineral insulation layer), even when burned at 1000°C, it will not produce smoke, halogens, or toxic gases, making it a truly halogen-free and non-toxic cable.
Overload-resistant, copper sheath can be used as a grounding wire

Overload-resistant: Since copper's melting point is 1083°C and the mineral insulation layer is also above 1000°C, compared to ordinary plastic cables, the current-carrying capacity of mineral insulated cables can be increased by one cross-section level and can withstand a considerable overload. Its overload capacity can reach more than 10 times the normal current-carrying capacity.
Copper sheath can be used as a grounding wire: For mineral insulated cables, due to the continuity and extremely low grounding resistance of the copper sheath, it can be used as a grounding conductor without the need for a separate grounding conductor.
Product applications

Due to the excellent performance of mineral insulated cables, they are suitable for rated voltages up to 1000V and below in the following lines:
General lighting
Emergency lighting circuits
Emergency broadcast circuits
Emergency elevator and lifting equipment circuits
Fire alarm control circuits
Computer room control circuits
Fire electrical circuits
Generator room power transmission lines
Non-interruptible power supply lines
Dual power control circuits
Public place lighting circuits
Main/distribution power system circuits
Historic site lighting circuits
High-temperature environment power and control circuits
Oil pump circuits
Potential explosion hazard area circuits

Since this type of cable uses entirely inorganic materials, it has some advantages that other cables cannot have.

1. Fireproof

The two materials used in mineral insulated cables, copper and mineral insulation, are inorganic. This type of cable does not burn or promote combustion and can continue to operate under flame conditions. The copper sheath melts at 1083°C.

2. High operating temperature

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

3. Long life

The inorganic materials used in mineral insulated cables ensure stability, long life, and fire resistance.

4. Explosion-proof

The highly compacted insulation material in mineral insulated cables can prevent steam, gases, and flames from passing through the equipment parts connected to the cable.

5. Small outer diameter

The diameter of mineral insulated cables is smaller than other cables with the same rated current.

6. Waterproof

If mineral insulated cables are completely immersed in water, they can continue to operate with the help of their seamless metal sheath.

7. High mechanical strength

Mineral insulated cables are sturdy and durable, can withstand severe mechanical damage without impairing their electrical performance.

8. High current-carrying capacity

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

9. Short circuit fault rating

At the same temperature, the short circuit fault rating of mineral insulated cables is significantly higher than other types of cables.

10. Grounding

For mineral insulated cables, an independent grounding conductor is not needed because the copper sheath used in this cable acts as a grounding conductor, providing a good low grounding resistance. For grounding sheath loop (ESR) wiring, in MEN (Multiple Earthed Neutral) systems, the outer copper sheath can be used as a grounding and neutral conductor.

11. High corrosion resistance

The copper sheath of mineral insulated cables has high corrosion resistance, and for most installations, no additional protective measures are needed. In places where the copper sheath of the cable is susceptible to chemical corrosion or industrial pollution, a plastic outer sheath should be used to protect the mineral insulated cable.

Mineral insulated cables have been widely used in high-rise buildings, petrochemicals, airports, tunnels, ships, offshore oil platforms, aerospace,iron and steel metallurgy, shopping centers, parking lots, and other occasions.

1. High-rise buildings

General lighting, emergency lighting, fire alarms, fire electrical circuits, emergency elevators and lifting equipment circuits, computer room control circuits, main/distribution power system circuits, dual power control circuits.

2. Oil platforms

General lighting, emergency lighting, potential explosion hazard area lines.

3. Airport terminals

General lighting, emergency lighting, fire monitoring systems, fire alarm systems.

4. Warships, ships

Generator room power transmission lines, fire monitoring systems, fire alarm systems, flue gas emission and ventilation lines, kitchen electrical lines, large power lines, dual power control circuits, emergency lighting, emergency broadcast circuits, computer room control circuits.

5. Chemical industry

General lighting, emergency lighting, potential explosion hazard lines, etc.

6. Subway tunnels

General lighting, emergency lighting, fire monitoring systems, fire electrical circuits, flue gas emission and ventilation lines.

7. Iron and steel metallurgy

High-temperature environment power and control lines, emergency power, large power lines, non-interruptible power supply lines, generator room power transmission lines.

8. Power plants

Large power lines, general lighting, emergency lighting, fire alarms, fire electrical circuits.

9. Aerospace

General lighting, emergency lighting, computer room control circuits, large power lines, high-temperature environment power and control lines, potential explosion hazard area lines.

10. Department stores

General lighting, emergency lighting, emergency broadcast, emergency elevators and lifting equipment circuits.

11. Libraries, museums, data processing centers

Fire alarm control circuits, fire electrical circuits.

12. Nuclear power plants

General lighting, emergency lighting, computer room control circuits, large power lines, high-temperature environment power and control lines, potential explosion hazard area lines.

13. Parking lots

General lighting, emergency lighting, fire alarms, flue gas emission and ventilation lines.

14. Historic sites

General lighting, emergency lighting, fire alarms, fire electrical circuits.