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Types and applications of cables
- May 25, 2018 -

species

Fire retardant rubber sheathed cable

A, use

This product is a series of soft cable with rubber sleeve for mining. Suitable for power connection of coal mining machines and similar equipment with rated voltage Uo/U of 1.9/3.3kv and below. Mostly used in coal mines.

Ii. Operating conditions

Wire core long-term allowed working temperature is 65 ℃, wire and the minimum bending radius is six times of cable diameter. Yellow sheath cables shall not be exposed to sunlight for long periods.

Nuclear class cable

Scope of application

· this product is suitable for the control and signal connection cables used in the network of the control system of the rated Uo/U 0.6/1kv control system of the nuclear power plant.

, cable conductor allows the long-term working temperature is 90 ℃, the short circuit does not exceed 250 ℃, the highest temperature the cable conductor duration of not more than 5 seconds.

, cable when the ambient temperature under installation should not below 0 ℃.

· the allowable bending radius is:

- the unarmored cable shall not be less than 6 times the diameter of the cable

-- the cable with the shielding result of armor or copper belt shall be no less than 12 times the diameter of the cable

-- the soft cable with shielding structure shall not be less than 6 times the diameter of the cable.

In the conductor, allows for a long time work when the temperature is not more than 90 ℃, the identification of the cable life not less than 40 years.

· the finished cable shall meet the requirements of class A beam combustion test as specified in GB/T18380.3 standard.

· finished cable smoke density: the transmittance is not less than 70%.

· radiation resistance: 25 * 104Gy

· halogen-free: when non-metallic materials are burned, the acidity (expressed as PH value) of the gas escaping should be greater than 4.3; The conductivity is not greater than 10 degrees Celsius S/mm.

Bare wire and bare conductor products

The main features of this kind of products are: pure conductor metal, no insulation and sheath layer, such as steel core aluminum stranded wire, copper and aluminum bus-bar, electric locomotive line, etc. The processing technology is mainly pressure processing, such as smelting, calender, drawing, hinged/compacted hashing, etc. Products are mainly used in suburban areas, rural areas, user mainline, switchgear, etc.

Power cable

The products are mainly used in the transmission, distribution, transmission, transmission, transformation and power supply lines of strong electric power, through large current (dozens to thousands of amps), high voltage (220V to 500kV and above).

Communication cables and fiber optics

With the rapid development of the communication industry in the last two decades, products have also developed at an amazing speed. From simple telegraphic cables of the past to thousands of pairs of speech cables, coaxial cables, optical cables, data cables, and even composite communications cables. The structure size of the product is usually small and uniform, and the manufacturing precision is high.

Electromagnetic wire (winding wire)

It is mainly used for various kinds of motors, instruments, etc.

Flexible fire cable

1, fireproof performance, fire resistance rating not only meets international GB12666.6 class A 950 ℃ 90 min also can meet the specified in the British BS6387-1994 grade A class B 750 ℃ 650 ℃ 3 h 3 h C level 950 ℃ for 3 h At the same time Also tolerated in the combustion of water jet and mechanical impact.

2. The continuous length, whether single core or multi-core cable, can meet the power supply length requirements, and the ultimate length can reach 200 m.

3. The cross-section of large single-core cable can reach 1000mm2 and the cross-section of multi-core cable can reach 240mm2.

4. Flexible, the cable can be wound on the cable disc, its bending radius is greater than 20D, and D is the outer diameter of the cable.

5. Non-smoke and non-toxic when burning, and use inorganic materials for insulation "non-combustible body", no harmful gas will be produced when burning, and no secondary pollution will occur.

6. The cross-section capacity is too large, and the cable has not only large cross-section flow but also large overload capacity. According to the wiring requirements usually cable surface temperature of 70 ℃ or less? If the wiring is not touchable? Also not in contact with combustible building materials? Cable sheath temperature can reach 105 ℃. When overload fire cable allowed working temperature is 250 ℃.

7. Corrosion resistance. Sometimes, organic insulated refractory cables need to wear plastic pipes or iron pipes. Fire - proof cable is copper sheath no need to wear pipe, copper sheath corrosion resistance good.

8. Without electromagnetic interference, when laying fire cable in the same shaft with electric wires and cables such as signal and control, the fire cable is shielded by copper sheath. The information that controls the transmission of wires and cables causes interference.

9. Good safety. Besides normal power supply in the fire, fire protection cables start fire fighting equipment to reduce fire losses. At the same time, it is also particularly reliable for personal safety. The copper sheath is a good conductor and is the best grounding wire.

10. Long service life, inorganic insulation material, high temperature resistance, and not easy to aging. Under normal working conditions its life can be equivalent to that of a building.

11. Transportation and installation of flexible fireproof cables include installation.

The new product

The derivation/new product of wire and cable is mainly due to its application

cable

cable

For the convenience of different and equipment and reduce the equipment cost and other requirements, and adopting new material, special material, or change the product structure, improve the technological requirements, or will produce different varieties of products are combined.

Different materials are adopted, such as: flame-retardant cable, low-smoke non-halogen/low-smoke low-halogen cable, termite resistant cable, anti-mouse cable, oil-resistant/cold-resistant/heat-resistant cable, etc

Change product structure such as: fire-resistant cable

Improve process requirements such as medical cables

Portfolio products such as: OPGW, etc

Convenient installation and reduction of equipment costs such as prefabricated branch cables.

application

The power system

Power system used in wire and cable products mainly include overhead bare wires, bus (bus), power cable, power cable (plastic cable, the paper (basic) they were replaced by plastic power cables, rubber sets of cables, overhead insulated cables), branch cable to partly replace bus (), electromagnetic wire, and power equipment with electrical wire and cable equipment, etc.

Information transmission

The main wire and cable used in information transmission system are local cable, TV cable, electronic cable, rf cable, fiber optic cable, data cable, electromagnetic wire, electric power communication or other composite cables, etc.

The instrument system

This part is used in almost all products except overhead naked wire, but mainly power cable, electromagnetic cable, data cable, instrument cable and so on

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