Steps to oversee the implementation of electrical work for buildings 5
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Extensions of the system of computer networks:
Year:
Computer networks are divided in terms of installation and connection to the two types:
A - Local Area Networks Local Area Network (LAN)
B - WAN Wide Area Network (WAN)
A - local area networks ((LAN:
Became the local area networks is the main component of each computer resources of each company almost has developed local area networks to link the various industrial fields to each other, and examples are: - Banks - Schools - offices, and are an important source of information to its users, where you can transfer the amount of information more with a higher speed for the roads that were used before, and consists of three main parts:
1 - the center carrier
2 - Mechanical Control
3 - Unit convergence of the network
B - wide area networks (WAN):
And networks of computers, which are different processes (account - store data and information) in addition to the terminals (Terminal) and Mlakiet collection terminals for users to link communications sub-systems.
Types of cables used in computer networks:
1 - Cable HF communications (fiber-optic cables) High Frequency Communication Line (Fibre Optics) a general location:
- Ensure that the excavation and the rules of lighting columns in accordance with the plans.
- Ensure that the excavation and the extension cables and pipes according to the charts.
- Install check columns and lighting units on them.
Tests:
- Ground resistance test and resistance grounding connectors.
- Test the insulation between the different aspects and between them and the line, neutral and ground.
- Test the balance electrical loads for each panel distribution.
- Control of lighting units after being fed trend to ensure efficient performance.
- Test the performance of switches and outlets.
- Test the performance of control devices fabricating malfunctions.
- Test the performance of the devices and connecting pieces of the functional.
- Testing the equipment to run the macro-pregnancy.
2 - coaxial cable Coaxial Cable.
3 - Cables Unshielded Twisted Pair Utp.
And taken into account when cables computer networks that are independent of whether they are inside the PVC pipes or ducts ground (Under Floor Trunking) and should be separated from the rest of the electric power circuits so as not to affect areas resulting from the circles of power in the form of electrical signals transmitted computer.
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