Copper-clad aluminum wire can be divided into two categories: one is the copper-clad aluminum wire used for signaling or communication. The other type is the copper-clad aluminum wire used for the power supply.
Information
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What are the Product Types of Cables? What is the Basic Knowledge of Cables?
Bare Conductor Wire
Bare wire and bare conductor products refer to the conductive wire without insulation and sheath. It mainly includes three series of products: bare single wire, bare stranded wire and profile wire.
Copper and aluminum single wire: including soft copper single wire, hard copper single wire, soft aluminum single wire, hard aluminum single wire. Mainly used as a variety of wire and cable semi-products, a small amount of communication wire and motor appliances manufacturing.
Performance Of Power Cables
- Electrical Properties Of Power Cables
Electrical conductivity — Most products require good electrical conductivity, and individual products require a certain resistance range.
Electrical insulation performance — insulation resistance, dielectric coefficient, dielectric loss, electrical resistance characteristics, etc.
Transmission characteristics — refers to high-frequency transmission characteristics, anti-interference characteristics, etc.
What is the Difference Between Switchgear and Distribution Cabinets?
The Differences Between Switchgear and Distribution Cabinets are as Follows
1. The function is different: switchgear is a complete set of electrical switchgear and control equipment, it is used as a power center and the main distribution device, mainly to play the role of a switch on and off. And distribution cabinet is to plays the function of distribution of electrical energy, line overload, short circuit, leakage protection role.
What Is The Internal Structure Of The Power Distribution Box And Distribution Cabinet?
What is the internal structure of the power distribution box and distribution cabinet? The most detailed explanation, learning collection essential!
“Distribution box”, also called distribution cabinet, is the collective name of the motor control center. A distribution box is according to the electrical wiring requirements of the switchgear, measuring instruments, protection appliances, and auxiliary equipment assembled in the enclosed or semi-enclosed metal cabinet or screen width, constituting a low-voltage power distribution device.
What is the Overhead Line Fitting? What is its Concept?
What are overhead line fittings?
Overhead line fitting is an accessory that connects and combines various devices in the power system to transfer mechanical and electrical loads or to play a protective role.
Overhead line fitting is an important part applied to the “power grid”, there are very many cross nodes in the power system of power transmission and distribution. Line crossings form a network, and each line crossing point needs to be fixed. There are many substations in the grid that form the intermediate nodes of the grid, and there are many power towers that support the main lines of the grid. The transmission of electrical energy requires conductor contact to be carried out and sufficient current-carrying area to be maintained at high power levels. That is, the grid equipment and conductors such as conductors ensure good and solid contact between.
Frequent Cable Accidents? A careful Selection Of Cable Joint Accessories Can Reduce The Danger!
A cable joint is a very important cable accessory. After the cable is laid, the segments of the line must be connected as a whole in order to make it a continuous line. These connection points are called cable joints.
The main role of cable joints is to make the line pass through, keep the cable sealed, and ensure the insulation level at the cable joints for safe and reliable operation. If the seal is poor, not only will oil leakage cause the oil-impregnated paper to dry out, but also moisture will invade the inside of the cable, so that the paper insulation performance decreases.
Do you know how to connect the cable lugs?
For the straight-line connection of cable lugs single-strand copper-core wires. First, cut the two wire ends to form a certain length of wire core, remove the surface oxide layer of the wire core, cross the two wire cores in an X shape, and twist each other 2 to 3 turns, Pull the straight head again.
When the general wire is connected to the terminal lugs, if it is a single-strand wire of 10mm2 and below, it needs to bend a circle at the end of the wire and connect it to the terminal. If it is a multi-strand copper wire of 4m㎡ or more, a terminal lug must be installed and then connected to the terminal.
Copper Wire Shielding or Copper Tape Shielding, Have You Chosen the Right One?
According to different occasions, the cable structure is also different. In the occasion of shielding interference, shielded cables are widely used. So when choosing shielded cables, should you choose copper wire shielding or copper tape shielding?
The function of the shielding layer is mainly to protect the current or signal from external electromagnetic interference. And it avoid the electromagnetic field generated by itself during use to the surrounding environment and current flow failure.
One Minute To Understand The Role Of Cable Shielding
The outer layer of the wire and cable is generally rubber or rubber composite sheath, the function of this layer is to insulate, but also to protect the cable from damage.
The cable is divided into high-voltage or low-voltage cables. If it is high-voltage, there will be a layer of resin-like filler inside, which serves as insulation. In high-voltage cables, this layer is an important part of insulation. There is no such thing in low pressure. Then there will be something like ribbon wrapped inside, which is to fix each core of the cable and fill the gap in the middle.