Flame retardant rubber sheathed cable
1. Use
This product is a series of mining rubber sheathed flexible cables. It is suitable for power connection of shearers and similar equipment devices with rated voltage Uo/U of 1.9/3.3KV and below. It is mostly used in coal mines.
2. Conditions of use
The long-term permissible operating temperature of the wire core is 65°C, and the minimum bending radius of the wire is 6 times the diameter of the cable. Yellow-sheathed cables must not be exposed to sunlight for long periods of time.
Nuclear-grade cables
Scope of application
· This product is suitable for control and signal connection cables used in the control system network of nuclear power plant rated voltage Uo/U is 0.6/1kV.
· The allowable long-term working temperature of the cable conductor is 90 °C, and the maximum temperature of the cable conductor does not exceed 250 °C when short circuit, and the duration does not exceed 5 seconds.
· The ambient temperature when laying the cable should not be lower than 0°C.
· The allowable bending radius when laying the cable is:
— Unarmoured cables, which should not be less than 6 times the diameter of the cable
— Cables with armor or copper strip shielding results should not be less than 12 times the diameter of the cable
— Flexible cables with shielded structures should not be less than 6 times the diameter of the cable.
· When the long-term allowable working temperature of the conductor is not greater than 90 °C, the identification life of the cable is not less than 40 years.
· The finished cable shall meet the requirements of Class A bunching combustion test specified in the GB/T18380.3 standard.
· Smoke density of finished cable: light transmittance is not less than 70%.
· radiation resistance: 25×104Gy
· Halogen-free: When non-metallic materials are burned, the acidity of the evolved gas (expressed by PH value) should be greater than 4.3; the conductivity should not be greater than 10μS/mm.
Bare wires and bare conductor products
The main characteristics of this type of products are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper-aluminum busbar, electric locomotive line, etc.; The processing technology is mainly pressure processing, such as smelting, calendering, drawing, stranding/pressing stranding, etc.; The products are mainly used in suburbs, rural areas, user mainlines, switch cabinets, etc.
Power cables
The product is mainly used in the transmission of strong electric energy in the power generation, distribution, transmission, transformation and power supply lines, with large current (tens of amperes to thousands of amperes) and high voltage (220V to 500kV and above).
Communication cables and optical fibers
With the rapid development of the communication industry in the past 20 years, the products have also developed at an astonishing speed. From simple telephone and telegraph cables in the past, it has developed into thousands of pairs of telephone cables, coaxial cables, optical cables, data cables, and even combined communication cables. The structural size of this type of product is usually small and uniform, and the manufacturing accuracy is high.
Magnet wire (winding wire)
It is mainly used for various motors, instruments, etc.
Flexible fireproof cables
1. Excellent fire performance, fire resistance grade not only meets the international GB12666.6A class 950 °C 90min, but also meets the requirements of class A 650 °C 3h B class 750 °C 3h C class 950 °C 3h in United Kingdom BS6387-1994 At the same time, it can also withstand water spray and mechanical impact in combustion.
2. The continuous length is long, whether it is a single-core or multi-core cable, and the length can meet the needs of the power supply length, and the limit length can reach 2000m.
3. The cross-section of the single-core cable can reach 1000mm2, and the cross-section of the multi-core cable can reach 240mm2.
4. It is flexible, the cable can be coiled on the cable reel, and its bending radius ≥ 20D, and D is the outer diameter of the cable.
5. It is smokeless and non-toxic when burning, and the insulation is made of inorganic materials "non-combustible body", which will not produce any harmful gases during combustion, and will not cause secondary pollution, which can be called an environmentally friendly green product.
6. The cross-sectional capacity is too large, and the cable not only has a large cross-sectional flow but also has a large overload capacity. According to the wiring requirements, the surface temperature of the cable is usually ≤ 70°C. When it also does not come into contact with combustible building materials? The cable sheath temperature can reach 105°C. The fireproof cable is allowed to operate at a temperature of up to 250°C in case of overload.
7. Corrosion-resistant, organic insulated fire-resistant cables sometimes need to wear plastic pipes or iron pipes, which are easy to age and become brittle, and iron pipes are easy to corrode; The fireproof cable is a copper sheath that does not need to be threaded, and the copper sheath has good corrosion resistance.
8. There is no electromagnetic interference, and the fireproof cable is laid in the same shaft with the wires and cables such as signal and control. The fireproof cable is shielded by a copper sheath. Won't the signal? Interference is generated by the information transmitted by the control wires and cables.
9. Good safety, in addition to the normal power supply of the fireproof cable in the flame, start the fire extinguishing equipment to reduce the fire loss. At the same time, it is also particularly reliable for personal safety, its copper sheath is a good conductor, is the best grounding wire, and continuous to the full length of the cable, greatly improving the sensitivity and reliability of grounding protection.
10. Long service life, inorganic insulating material, high temperature resistance, and not easy to age, his life is many times higher than that of organic insulated cables, and its life can be equivalent to that of buildings under normal working conditions.
11. The transportation and installation of flexible fireproof cables include installation.
new products
The derivative/new products of wires and cables are mainly due to the requirements of different application occasions, application requirements, convenience of equipment and reduction of equipment costs, etc., and the use of new materials, special materials, or changing the product structure, or improving process requirements, or combining different varieties of products.
Different materials are used, such as: flame retardant cable, low smoke halogen-free/low smoke and low halogen cable, termite-proof, rodent-proof cable, oil/cold/temperature resistant cable, etc
Change the product structure, such as: fire-resistant cable, etc
Improve process requirements such as: medical cables, etc
Combination products such as: OPGW, etc
Easy to install and reduce equipment costs, such as: prefabricated branch cables, etc.
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