Fire-resistant cables for security alarm

The field repair of the cable also must be prepared to some of the tools and materials used fully, plastic welding torch is essential, high-voltage insulating tape, waterproof tape and plastic insulated and sheathed strip cut leather, such as sealing material, must also be prepared, because the cable insulation sheath material is mainly divided into crosslinked polyethylene, polyethylene, PVC etc. Some materials belong to thermosetting materials, such as crosslinking polyethylene insulation can't repeat the molten again use, use of raw materials for repairing in site, can only use high voltage insulation tape and repair in United States 3 m tape series for repair. And some of the material belongs to thermoplastic material, can again with high temperature, fused using such as polyethylene, PVC and other materials, can live out, using the cable ends covering materials for cutting down the edges of cut into thin strips, can realize the low voltage cable insulation and sheath repair, the repair quality can fully meet the cable normal use performance requirements.

Another for medium voltage Security cables cable sheath damage phenomenon during the processing, cannot too rough, a process is the installation of the cable must be a light to put, please again after a cable appear external damage, its internal insulation damage sometimes is to say, the author used on construction site installation process accidentally damage to large area of outer sheath of the cable, and with returned to the factory, found that the partial discharge of cable damage levels and breakdown phenomenon, so for medium voltage power cable laying process appeared at the scene of outer sheath after damage, it is best to truncate or to replace the cable intermediate joint, because after the sheath of cable damage repair, there may be using.

Application of commonly used Wire & Cable

AVR copper core PVC insulated soft wire, used in instruments and meters, electronic equipment and other internal with soft connection.RV copper core PVC insulated soft flexible cables wire connection is characterized by soft, flexible, outside diameter is small, lightweight, easy wiring, it is mainly used for MLJ mobile electric appliances, instruments and meters, household appliances, power lighting requirements when using soft occasions.BV copper core PVC insulated wire, more hard, for fixed installation, the difference between BV and RV core thicknesses, BV conductor, cable hard, internal wiring is difficult, closed to wiring is no problem, and good shape, the cost is low.BVR soft copper core PVC insulated wires, belong to semi-rigid, used for fixed installation, lay in the soft required. For high temperature, high temperature line should be adopted, such as AF - 200 high temperature wire, heat resistance, 200 ℃, but very expensive, should use less as far as possible.Use, also should according to the actual environment temperature is chosen.Try to use Can meet the requirements of heat resistance at 80 ℃, 90 ℃, 105 ℃ of wires.

Wire and cable used in low temperature environment, which requires the minimum ambient temperature and the minimum allowed in laying the bending radius, the installation, wire and cable insulation and sheath layer does not crack, and under the condition of low temperature long runtime from the molecular structure of curved prestressed effect or force and the action of cracking.For mobile or mobile use wire and cable, can withstand multiple demands in low temperature with small bending radius bending mechanical stress, and the insulating layer and sheath layer was not damaged, the requirements of the cable insulation and sheath under low temperature conditions can still maintain a certain flexibility and elasticity.With the requirement of electromagnetic interference, also should be shielded wire.

Five Categories of Wire and Cable Products

Five Categories of Wire and Cable Products
1. The bare wires and bare conductor products
The main characteristic of this kind of product is: pure metal conductor, insulation and sheath layer, such as steel core aluminum stranded wire, copper bus-bar, line of electric locomotive, etc; Processing technology mainly is the pressure processing, such as melting, rolling, drawing, twisted/compressed tightly twisted, etc.; Products are mainly used in suburban, rural, user, the main line, switch cabinets, etc.
2. Power cable
This kind of product main features are: the crowded outside the conductor insulation package, such as overhead insulated cable, or a few core stranded, such as more than two core overhead insulated cable, or add sheath layer, such as plastic/rubber wire and cable. Main technology has drawn, twisted, insulation extrusion, cabling, armored, sheath extrusion, such as combination of different processes of various products have a certain distinction.
Products are mainly used in hair, with, lose, and high voltage power transmission of the power supply circuit, through the current big, high voltage.
3. Electrical equipment wire and cable
Such products, the main characteristics are: various specifications, application range, use voltage in 1 kv and below is more, to derive new products constantly, in the face of special occasions, such as fireproof cables, flame retardant cable, low smoke zero halogen/against termites, low smoke low halogen cable, mouse cable, oil/cold/heat resistance, abrasion resistance cable, medical/farm/mining cable, thin wire, etc.
4. Communication cable and optical fiber
With nearly 20 years, the rapid development of communication industry, the product also has a remarkable development.From the past simple development to thousands of telephone and telegraph cable to cable, coaxial cable, optical cable, data cable, even combined communication cables, etc.
The product structure size is usually small and uniform, manufacturing high accuracy requirement.
5. The electromagnetic wire
Mainly used for all kinds of motors, instruments and meters, etc.
Wire and cable derivative/new products is mainly due to the application of different requirements and equipment applications, convenience and reduce the equipment cost and other requirements, and use new materials, special materials, or change the product structure, improve the technological requirements, or will produce different varieties of products are combined.
With different materials such as flame retardant cables, low smoke zero halogen/low smoke low halogen cables, termite resistance, prevent the mouse cable, resistant to oil/cold/heat resistance wire, etc.
Change the products structure, such as: fireproof cables, etc.
Improve the technical requirements such as: medical cable, etc.
Composite products such as: OPGW, etc.
Convenient installation and decrease the cost of equipment such as: prefabricated branch cable, etc.

Wire and cable applications

Wire and cable applications
1.The power system
Power system used in wire and cable products mainly include overhead bare wires, bus, power cable, power cable (plastic cable, the paper 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.
2.Information transmission system
The main wire and cable used in information transmission system are local cable, TV cable, electronic cable, radio frequency cable, fiber optic cable, data cable, electromagnetic wire, electric power communication or other composite cables, etc.
3.Mechanical equipment, instrumentation system
This section in addition to the overhead bare wires almost all the other products are used, but mainly power cable, electromagnetic wire, data cable, instrumentation cables, etc.

PVC insulated & sheathed Control Flex Cable

Anyte Flexible cables for cable tracks are especially designed for use with high reversed bending stress as for example in production lines, high rack storage areas or pacing machines. They show a very good durability with very small bending radius.

Anyte Flexible cables also use high strand conductors, but there are more factors involved controlling the flexibility; Such as, Shielding, outer jacket material, cable lay construction and type of conductors just to name a few.It's always best to discuss your flexibility needs and the conductors available with a wire and cable manufacturer, especially one that works with high strand count conductors. Off the shelf (commodity) wire manufacturers usually work with solid, 7 and 19 strand conductors which are less flexible than the high strand conductors.

PVC insulated & sheathed Control flex cable Screened numbered cores
Conductors: Plain annealed flexible copper
Insulation: PVC (Polvinyl chloride)
Screen: Melinex tape & TCWB (Tinned copper wire braid)
Sheath: PVC (Polvinyl chloride)
Voltage: 300/500v
Operating temperature: Maximum 70°C, Minimum 0°C
Standards: VDE0250: Insulated power cables. General specifications
BSEN50266-1:2001: Common test methods for cables under fire conditions. Test for vertical flame spread of vertically-mounted bunched wires or cables

Widely used Wire and cable

Wire and cable is used for electricity, communications and related transmission USES of materials."The wire" and "cable" and no strict boundaries.Is usually some conclusions, the product of small diameter, simple structure, less product called wires, no insulation called bare wires, the other is called cable;Conductor cross-sectional area of the larger (more than 6 square millimeter) called the big wire, the smaller (less than or equal to 6 mm2) called a small wire, insulated wire is also known as wire cloth.

Electric wires are consisting of a root or a few soft wire, coated with soft sheath;Cable is composed of one or several root insulated wires, outside with made of metal or rubber tough outer package again.Cables and wires are generally by the conductor, insulation cover and protect the skin of three components.Common characteristics of the cable is as follows: CEF - ethylene propylene rubber insulation neoprene sheath, Marine flame-retardant power cable.CVV, PVC insulated, PVC sheathed Marine flame-retardant power cable.Oxygen tank wire often USES BV, BX, RV, RVV series wire.