What are the places that need to be grounded when installing a program controlled switch? What is th

1. The grounding place is different, some switches have grounding terminals, some switches do not, generally if you can't find it, just use the shell to ground (of course, the switch shell must be metal).

2. As for the role of grounding, two points;

The first is lightning protection, the second is that some brands of switches have high requirements for power supply, if the power supply is not clean, it will be easy to produce noise, and this problem can be greatly improved or even completely solved after grounding.

If there is a sign on the connection of the program-controlled switch, you look for it, and it is generally a yellow three, with a vertical line under it.

Grounding is lightning protection. In fact, it doesn't have a big effect, the thunder mainly comes from the external line, and the external line has an extension line and a trunk from telecommunications, and the trunk line is best to have a lightning protection terminal.

When the insulator is damaged, the parts that are easy to come into contact with the outside world will increase the potential due to the accumulation of charge. For safety purposes, the main electrical equipment must be connected to ground.

The insulator that protects the circuit can be damaged by excessive potential. Therefore, it is necessary to limit the potential rise between the circuit and the earth.

When handling flammable materials or repairing electronic devices, static electricity can easily ignite flammable materials or damage electronic devices. Therefore, the growth of static electricity must be limited.

Some telegraph devices or electrical transmission circuits use earth as a conductor (known as a phantom loop). In this way, the cost of installing another conductor as a return conductor is eliminated.

For measurement purposes, the earth is used as a fixed reference potential. Based on this reference potential, other potentials can be measured. In order to keep the reference potential to zero, an electrical grounding system should have sufficient current-carrying capacity.

What are the places that need to be grounded when installing a program-controlled switch? What is the role of each ground

1. The grounding place is different, some switches have thick limbs at the grounding end, some switches do not, generally if you can't find it, just use the shell to ground it (of course, the switch shell must be metal). 2. As for the role of grounding, two points; The first is lightning protection, the second is that some brands of switches have high requirements for power supply, if the power supply is not clean, Pai Chong will be easy to produce dust and hunger noise, and this problem can be greatly improved or even completely solved after grounding. I wish you a happy life, dear and dear.

There are two types of program-controlled switches (at this stage, most of the switches are IP switches or pure IP softswitch equipment: servers).

Fundamentally speaking, there is a certain difference between the switching mode of digital switch and analog switch, digital switch adopts time division switching, and analog switch is air division switching. In other words, digital switches are non-blocking switching, while analog switches are limited by the call rope path. For example:

The analog switch has 16 internal rope lines, and the switch can handle up to 16 calls at the same time, and users cannot dial more than 16 rope lines. There is no such problem with digital switches.

Analog switches: the existing problems, poor call quality, easy interference, few functions, limited transmission distance, etc., at this stage below 128 extensions, some domestic exchanges are analog switches; Most of the above are digital switches. Imported equipment and operators use digital program-controlled switches.

Advantages of analog switches: Cheap.

Upstairs: Connecting to an analog extension refers to an analog program-controlled switch, which is not right. The digital program-controlled switch can provide a digital extension interface, an analog extension interface, mainly to meet the needs of most users, for the program-controlled switch, the host is still used in the time division switch, rather than the air division switch.

IP** switch and IP softswitch equipment: mainly use the Internet to transmit voice signals, so as to save the cost of wiring and materials, and at the same time use optical fiber transmission, the distance is not limited! At the same time, the IP extension has an extension number to be registered on the extension, and the mobile extension number remains unchanged, which is convenient for maintenance.

When the IP switch is wired by the user, a network cable can be connected, and the network cable is connected to the IP machine first, and then the other interface is connected to the computer, which saves the user wiring and maintenance costs.

Grounding plays a role in lightning protection, generally there is a ground wire on the switch, simple point, buy a copper ground wire row in the electronic market, hit two expansion screws on the ground, and use the copper strip ground wire to press a "nose" to install on the switch. If you're in a high minefield, and the requirements are strict, you're going to have to dig a hole....Slag.... The specific size of the pit depends on the size of your equipment and the degree of lightning protection!

Method steps: There is no equipotential grid in the computer room. A circle of flat steel should be laid along the Paixin machine room, and the equipotential row should be reserved, and the flat steel should be welded with the main steel bar of the wall column in many places.

The equipment and cabinets in the computer room should be connected to the equipotential row with metal flexible wires to ensure that the excessive resistance between them does not exceed ohms.

The computer room is not shielded. If conditions permit, the metal mesh should be used to wrap the computer room, and the lines in and out of the computer room need to wear metal pipes, and the metal pipes should be grounded, and the metal sheath of the line edge and vertical path should also be connected to the equipotential. If there is no condition, at least ensure that the metal sheath and metal pipe of the line are grounded and the metal doors and windows are grounded.

Try to do a good job in the effectiveness of the Faraday electromagnetic cage in the machine room.

The effectiveness of the arrester installation is yet to be confirmed. I don't know whether the arrester specification selection is appropriate, and the arrester connection line obviously exceeds the specification requirements of meters.

AL-23KN (G16) Selection Guide: Applicable to lightning protection of program-controlled**, program-controlled** switches, fax machines and other systems; The power supply reputation Li line and signal line with the virtual socks when lightning protection, lightning protection effect and ground wire has nothing to do with the ground wire, can not be grounded installation is simple, with a large flow rate, protection Fan You is late and wide, the power supply is uninterrupted, the lightning protection effect is thorough, the service life is long, no maintenance and construction cost is low. (The signal port adopts RJ-11 interface with 4 48 channels, and the power output is equipped with 1 tripod hole) Manufacturer:

Zhongshan Aomei High Electronics**** Q773926850