wave surge protector

1.The concept of wave surge protector: The surge protector, also known as the lightning armor, is an electronic device that provides safe protection for various electronic devices, instruments, and communication lines. When the electrical circuit or communication line suddenly generates peak current or voltage due to external interference, the surge protector can be diverted in a very short period of time, thereby avoiding the damage to other equipment in the circuit.

1. Basic knowledge: The main function of the waves of waves is to protect the damage of "waves" to protect electronic equipment. Therefore, if you want to know the role of the surge protector, you need to figure out two questions:

What is Langyong? Why do electronic devices need their protection?

Langyong is also called Trum -Bo. As the name implies, the moment of overvoltage beyond the normal working voltage. In essence, waves are a kind of severe pulse that occurs in just millions of minutes. The causes that may cause surge are: heavy equipment, short -circuit, power switching, or large engines. Rapon or transient voltage means that the voltage exceeds its rated level during the process of electrical flow. In the United States, the standard voltage of the general family and office environment is 120 volts. If the voltage exceeds 120 volts, problems will occur, and the surge protector will help prevent the problem from damaging the computer.

1. The role of the surge protector:

The first line of defense should be a large -capacity power supply anti -wave protector that connects to the entrance of the user's power supply system and between the earth. Generally, this class of power protector has a maximum impact capacity of 100kA/phase, and the required restricted voltage should be less than 2800V. We call Class I -class power supply anti -wave surge protectors (SPD for short).

These power supply anti -wave protectors are designed for large current and high -energy wave energy absorption of large currents and high -energy waves that are designed by lightning and inductive lightning strikes, which can be diverted to the earth. They only provide a limited voltage (when the impact current flows over SPD, the maximum voltage appears on the line becomes a limited voltage) is a medium -level protection, because the Class I -level protector is mainly absorbing the large wave current. It is not possible to fully protect the sensitive electric equipment inside the power supply system.

The second line of defense should be the power supply anti -wave protector that is installed in the sub -power distribution equipment of important or sensitive power equipment. These SPDs have a more complete absorption of the surplus energy of the surplus waves that pass the power supply inlet, and have an excellent inhibitory effect on the transient overvoltage. The maximum impact capacity required by the power -proof wave protector used at that area is above 40kA/phase, and the required limit voltage should be less than 2000V. We call Class II -level power supply anti -wave surge protectors. The general user power supply system can meet the requirements of the power service operation.

The final line of defense can use a built -in power supply wave surge protector in the internal power supply part of the electric equipment to achieve the purpose of completely eliminating the small transient over -state overvoltage. The maximum impact capacity required by the power -proof wave protector used at this area is 20kA/phase or lower, and the required limited voltage should be less than 1800V. For some particularly important or particularly sensitive electronic devices, it is necessary to have the third level of protection. At the same time, the electrical equipment can also be protected from the influence of transient overvoltage generated by the system.

3. Electric table: A. The concept of electrical table: The electric energy meter usually used by electricians is an instrument used to measure electrical energy, commonly known as electrical table.