Low Voltage Cables

Low Voltage Cables

Presentation

Low voltage cables are available in a wide range of sizes, materials and types, each one particularly suited to its purpose. Cables consist of three main components: the conductor, the insulation and the protective outer sheath. The composition of individual cables varies according to the application.
Construction and materials are determined by three main factors
The operating voltage, which determines the thickness of the insulation and the current-carrying capacity, and the cross-sectional dimensions of the conductor Environmental conditions, such as temperature, water, chemical or sunlight exposure and mechanical shock, determine the form and composition of the cable sheath.
Stranded copper or aluminium conductors are used for low-voltage cables. Although solid conductors may be used for the small conductors of the cable. The entire assembly can be round or flat. Non-conductive filler wire can be added to the assembly to maintain its shape. Special purpose LV cables for overhead or vertical use may have additional elements such as structural steel supports. Some LV cables for outdoor overhead use may not have an outer sheath.

Applications

Low tension cables are used in a wide range of industries including water, renewable energy, distribution and power networks, nuclear and thermal power stations, airports, marine, defence, telecommunications, windmills, construction, mining, offshore, applications, marine cabling, railways, automation, audio-visual and manufacturing industries and these cables can be used in a large number of applications.

Features

Available in a wide operating temperature range from -40°C to 90°C.
Excellent corrosion resistance of copper/aluminium conductors even at high temperatures
Best suited to fatigue damage caused by vibration or load cycling.
Excellent electrical, flame and heat resistance.

Meet IEC, TUV, CCC, CE production standards
Meeting your needs: Choose the material you want, including PVC, XLPE insulated conductors, in PVC or LSZH.
The low tension cable is also particularly resistant to grease, mineral oil and ozone.

Low Voltage Cables

What is low voltage cable?

Low voltage cables are wires and trims used in applications that require less infrastructure, including telephones, security lines, fire alarms, intercoms and the internet.
The safety, reliability and speed with which companies carry out their activities are all affected by the installation of low voltage cables.
Insulated and shielded low-voltage cable substances used in these cable types include low-voltage XLPE cables, PVC and elastomer compounds.
Steel (or aluminium for single-core cables) wire or tape can be applied under the outer sheath to provide additional mechanical protection. You must be aware of the types of wiring available. 
The following types of low-voltage cables are available.
Alternating current (AC)
Periodic changes in the direction in the wire that cause the current to reverse its course are characteristic of this type of current. AC is a safe solution to the electricity needs of homes and businesses.
Direct Current (DC)
This current transmits electricity along a straight line. The most typical battery is DC. DC is suitable for smaller projects.
We are a renowned manufacturer of low-voltage cables for all your needs.

How does low voltage work?

Low voltage power cables (LV cables) are used to connect electrical equipment with a low voltage cable rating of 50 to 1000V AC and 75 to 1500V DC. As a result, they are not electrically stressed. 
Wiring with LV cables requires the knowledge and experience of a qualified technician with experience in installation. The entire common voltage line network of the building. You are confident that a low voltage life expectancy can be obtained. 
In some cases, the wiring infrastructure needs to be built to support low voltage sizing. Low voltage wiring has several advantages, including use in a wide range of applications in almost any environmental type of structure.
Some of the most common low voltage uses include.
Telephones are required in both multi-phone systems and computer networks. They remain important in every organisation and home office. In many cases, cabling includes fibre-optic, Ethernet or Wi-Fi based setups.
Today, almost every gadget in your office can be Wi-Fi enabled. Wi-Fi network setups use low-voltage wiring.
There is a high demand for wiring in commercial structures. The installation of low-voltage cables is becoming more and more advantageous and cost-efficient. Low voltage wire gauge used as video and audio equipment is increasingly being used by businesses and subscribing to cable TV.
Before installing cable in your facility, choose the appropriate size of low voltage cable for your needs.RuiTian Cables is a leading low voltage cable company.

Surveillance and security. When developing a security or surveillance strategy, it is vital to choose the correct low-voltage cable specification - wiring connections for cameras, motion sensors and alarms are placed in certain places. Example. In addition, for safety reasons, choose the right low-voltage lighting cable.

What materials are used for low-voltage cables - XLPE and PVC?

The quality of the insulation material you use plays an important role in successful operation. It is therefore vital that you choose the right insulation material for your line. Here are the properties you should look for.

Properties of the insulation material

Low conduction losses due to high insulation resistance
High dielectric strength prevents the cable from collapsing.
Excellent mechanical strength to withstand industrial line handling.
It should be non-hygroscopic, which means that it should not absorb moisture from the air or soil.
It is not flammable.
We will look at XLPE and PVC.

Cross-linked polyethylene

Cross-linked polyethylene cables are known as cross-linked polyethylene cables. The shape memory properties of XLPE are due to its 3D molecular bonding structure. In short, low voltage XLPE cables are essential in industries where wire and cable are exposed to

Extreme high temperature conditions
Electrical applications involving high voltage
Stress and abrasion
Liquids such as water
Hazardous chemicals
Pipelines, mining and numerous electrical applications can all benefit from XLPE cables. Cross-linked polyethylene cables are also used in the chemical and commercial and residential heating industries.

Pvc (polyvinyl chloride)

The insulation is made from a synthetic material. It is produced using acetylene polymerisation. The insulation is made from a synthetic material. It is made from a white powder. This insulating material is mixed with a high boiling point liquid plasticiser to make it suitable for insulating low voltage electrical cables.

 It has a high temperature range. The plasticiser turns the substance into jelly and makes it malleable. Over a wide temperature range, PVC has excellent insulation resistance, good dielectric strength and mechanical durability. It is oxygen inert and virtually inert to several bases and acids.

PVC insulated cables are commonly used for low-voltage lighting cables for domestic lamps and electrical installations due to their mechanical properties. (i.e. flexible).

The difference between XLPE and PVC

The key difference between XLPE and PVC is that XLPE can be used in both high- and low-stress applications. Its construction resists abrasion, tension and other forms of wear and tear. As PVC insulation cannot withstand as much stress, it is only suitable for low tension applications.

Other notable differences are

XLPE insulation has a more extended low voltage cable life expectancy PVC insulation.
Cross-linked polyethylene is more environmentally friendly as it does not contain chlorinated substances.
        XLPE can withstand high temperatures through the insulation material.

Cross-linked polyethylene offers higher resistance to moisture.

How are low voltage cables tested?

I know this will come to your mind; why do I need to test cables? Cable testing is necessary to reduce testing time. This is done to ensure that

Consistency of the cable
The quality of the cabling
The functionality of the cable
You may have experienced a cable fault and soon after it becomes a problem. Visually inspecting all of your facility's wiring is an excellent way to detect problems before they cause downtime. Check the cables for copper corrosion, split insulation, moisture on the wires and various other signs of cable deterioration.
Use this test to determine the DC resistance of copper or aluminium conductors. The resistance of a conductor indicates how easily it allows current to flow through it. The size and construction of the conductor has an effect on its resistance. Environmental factors such as temperature and resistivity can also affect resistance. It is usually measured in ohms per kilometre.

The test sample is selected as shown below.

Reel length 1 m, all solid round conductor
Solid conductors up to 25 mm2 in size, stranded or scalloped 5 m reel length
For all stranded or fan-shaped solid conductors, a reel length of 10 m is more important than 25 mm2.
All round conductors are solid. 1 m barrel length
Solid conductors up to 25 mm2 in size, stranded or scalloped 5 m reel length
For all stranded or scalloped solid conductors, a reel length of 10 m is more important than 25 mm2.

Insulation thickness

The total resistance between any two locations separated by electrical insulation is measured by an insulation resistance (IR) test. This test therefore determines the effectiveness of the dielectric (insulation) in resisting electrical currents. Such tests are essential to determine the insulation quality of a product.

Tests are performed regularly to detect potential insulation problems and to avoid user errors or costly product repairs.

Sheath thickness

Sheath resistance testing is an important field diagnostic procedure for detecting potential cable faults. It is important to note that the purpose of this exercise is to demonstrate the integrity of the cable sheath; the outer sheath is used to shield the final cable from the surrounding environment. The label "sheath resistance testing" is therefore somewhat misleading.
 

Request a Quote

  • wechat

    Janey: +86 138 3311 9023

  • wechat

    Ivy: +86 150 8117 8223

  • wechat

    Chloe: +86 181 3119 7232