Fiber optics has been one of the main pillars of modern communications. It has a large communication capacity and long transmission distance. It also has the advantage of being highly sensitive and immune to electromagnetic interference. So, how exactly does fiber optics transmit optical signals?
At present, the cable industry is accustomed to flame retardant (FireRetardant), LowSmokeHalogenFree (LSOH) or low halogen low smoke (LSF), fire-resistant (FireResistant), etc., with certain fire performance of the cable, are collectively referred to as fire-resistant cable.
I. Introduction Of FTTH Networks
With the development of optical communication networks and the deepening of fiber optic access, FTTH network construction is growing exponentially.
At present, both China Telecom and China Netcom have indicated that they will invest huge amounts of money in the large-scale commercialization of FTTH.
What Is A High-Voltage Cable?
Ultra-high voltage transmission refers to the use of 500 kV-1000 kV voltage levels to transmit electricity.
If the 220 kV transmission index is 100%, the relative investment per kilometer of UHV transmission, the relative cost per kilowatt-hour electricity transmission a hundred kilometers and the consumption of metal materials, etc., have been significantly reduced, and the line corridor utilization rate has been significantly improved.
In our daily lives, we can often see the overhead ultra-high voltage transmission project, whether we have thought about the question: why can not be like the city underground cable, high-voltage power lines all buried underground?
A shielded control cable is generally used as the connection line of electrical instruments.
It is suitable for the connection line of electrical instruments with an AC-rated voltage of 450/750V and below and the transmission line of the automatic control system.
It has excellent properties such as oil resistance, water resistance, wear resistance, acid and alkali resistance, resistance to various corrosive gases, aging resistance, and non-combustibility.
For contemporary people in most parts of the world, electricity is a necessity. It is an essential commodity that contributes to our comfort. Our jobs, gadgets, and most daily activities are directly dependent on our ability to access electricity.
From a worldwide perspective, high-voltage DC transmission cable is applied to the following areas such as long-distance high-capacity overhead transmission, power grid interconnection, and long-distance submarine cable transmission with obvious advantages.
Braided cables are required for stability.
Crossed threads allow the braid to flex and stretch without bending, folding or kinking.
There are excellent electrical conductors braided cables and an electrostatic shield to ensure signal integrity.
Copper, tinned copper, and aluminum are examples of these conductors.
Solar modules are the core part of solar power systems.
Its function is to convert solar energy into electrical energy and send it to the battery for storage to facilitate the work of the load.
As an important part of photovoltaic modules, the output power of solar cables is very important.
Three-core cable helps connect devices and machines to the mains.
The size of the 3-core cables you choose to use and the way you design your circuit can also affect your project.
Because of differences in applications and variations in project specifications.
Additionally, high-voltage applications often require high-quality cables, known as steel wire armor (SWA), and their applicable standards and specifications.
Therefore, you must be familiar with the 3-core armored cable colors, and what the conductors of each color are for.
In this post, we will discuss all of these issues in more detail.