Electrical Cable Classification
Electric cable:
It is one of the basic components of electrical power, and it transfers this power from one place to another to provide electrical supply for electrical loads.
The electric cable is usually used in the electrical distribution and transmission networks.
Method of laying electrical cables:
Electrical cables have been extending outside the buildings by burying them with the ground in special trenches, or they are installed on poles.
If it is inside, it is either hidden inside plastic tubes, or it is visible on metal stands.
what is the electrical cable made of?
Electrical cables consist of:
1- A conductive substance for electricity.
2- Insulating materials surrounding the cable.
3- Cable cover, which is either of lead, aluminum, or plastics.
4- Reinforcement due to the weakness of the mechanically isolated cables.
This reinforcement may consist of one or several layers of steel tape or wire or, other.
Usually, filler materials have been adding between the reinforcing layer and the cable sheath.
5- Protective cable cover, where the cables have been covering with a material made of plastics or rubber to prevent rust.
Classification of electrical cables:
- It can be said that the classification of electrical cables varies, and the classification is based on multiple criteria.
- It can be classified according to the types of conductors or according to the operating voltage, whether it is low, medium, or even high.
Also, it is possible to classify the electric cable according to the type of insulator, whether it is polyvinyl chloride, rubber insulators, or polyethylene.
Accordingly, we realize that no specific type of cable is prevalent, common, or applicable only.
But taking into account the areas of use of each category separately to arrive at an appropriate classification according to the fields of work.
How to employ electrical cables in the right place to work:
Before going into this, it is imperative to know some cabling concepts, which will help us place each cable in its correct place.
Insulation level:
Where many factors are influencing the standard
1- The type of wire used in the cable used for insulation.
2- The thickness of the cable used for insulation.
If we want to work with high voltage cables, a high level of insulation is used to withstand high voltage and currents.
As for low voltage cables, fewer and thinner cables have been used than those used in high voltage.
Term of Operating Voltage:
It expresses the maximum potential to withstand voltage on the cable during the period of operation.
It often depends on the cable specifications in terms of the level of insulation, the type of material the cable is made of, the thickness of the insulation, and so on.
Types of cables in terms of insulation used:
Many types of insulators have been used in electrical cables, and they have often made of polymeric materials.
These are the materials that are classified for electric cables through, such as:
1- Cross-linked polyethylene:
It is one of the most insulating materials for its resistance to many factors of overload such as humidity and temperature.
Often this type does not need to be armed, and despite its toughness, one must avoid extending it in a curved shape or subjecting it to mechanical pressures.
2- PVC:
It is one of the most common types of insulators used in the market due to its excellent use in low voltage cables.
This type can withstand up to 303 kV, but unfortunately, it has many disadvantages, namely:
1) It does not tolerate simple heat.
2) It cannot use in bent works.
3) It was cracking while exposed to heat.
However, it has a self-extinguishing feature.
It is worth noting that we are talking about the types of cables that can withstand bends.
The insulators of these types are characterized by their resistance to water even though they do not tolerate oil or gasoline.
Types of cables in terms of voltage:
Cables rotate in terms of operating voltage used from low to high.
It is worth noting that high voltage cables have more complex designs than other low voltage cables.
Often we rely on high-voltage cables to obtain the desired efficiency, and we can classify them through the following:
1- Low voltage cables less than 1 kV.
2- Medium voltage cables which are 3.3, 6.6, 11, and 22 kV.
3- High voltage cables of 33, 66, 132 kV.
Top tips for choosing the best electrical cables:
in csi electrical division code you will find all specification of electrical cables , but here are top tips for how you could choose the right cables .
Choosing the best electrical cables is not an easy task, as there must be available components that contribute to providing safety and security.
Because electrical cables are by their nature exposed to various external pressures, we must know the specific function of each cable as stated above.
Taking into consideration all the possibilities before starting work, and accordingly, we have summarized tips that help in finishing the business better, including:
1- Paying attention to ensuring that the cables are made by reliable factories and companies so as not to be damaged by the presence of various external factors.
2- Mainly relying on the presence of a specialized engineer or technician to install cables professionally.
3- Choose cables with suitable insulators and bear the operating efforts appropriate to the nature of work.
4- Developing an appropriate plan to extend the cables in a manner that suits its capacity and helps in raising the rates of safety and security.
for more detail about csi electrical division
The Top Category of Electrical Cables | Constguide - Electrical Company
Fire Resistance Cable | Constguide - Electrical Company
The Best Electrical Company in Egypt
Costguide...The best engineering search engine includes a selection of the world's top companies in all engineering sectors such as “building, construction, constructions, electricity, machinery, equipment, finishes, decorations, furniture ... etc." So We Represent,
The Best Csi Division for Electricity Company and Electrical Suppliers Such As:-
Try our products catalog from here
Try our products catalog from here
Try our products catalog from here
· EGEC, Egyptian for Engineering; Commerce
Encyclopedia
Tenders
Hall Of Fame
Please Login to Post a Comment
Login RegisterMohammed Ramadan