How to select lightning protection products? Which one is better?

It's so detailed, you can refer to it.

The first category: manufacturing and storage of pyrotechnics, etc., caused by sparks, causing great damage and personal damage; Buildings with Zone 0 or 20** hazardous locations; Has a Zone 1 or Zone 21** hazardous location.

Category II: National Key Cultural Relics Units; national buildings and large-scale buildings; National special and first-class large gymnasiums; Dangerous buildings that manufacture and store explosives and their products, and electric sparks are not easy to cause or cause great damage to people;

Those who have Zone 1 or 21** dangerous places, and electric sparks are not easy to cause ** or will not cause huge damage and personal **; Have a Zone 2 or Zone 22** hazardous location; Possess ** dangerous open-air steel closed gas tank.

Category 3: Except.

Categories 1 and 2 are the third category.

Classification of lightning protection of buildings.

Buildings should be divided into three categories according to the lightning protection requirements according to the importance of the building, the nature of use, the possibility and consequences of lightning accidents.

In areas where ground blitzkriegs are likely to occur, they should be classified as Class I lightning protection buildings in one of the following situations:

1) Any dangerous building that manufactures, uses or stores fire explosives and its products causes a detonation due to an electric spark, which will cause great damage and personal damage.

2) Buildings with Zone 0 or Zone 20** hazardous locations.

3) Buildings with hazardous locations in Zone 1 or Zone 21 that are caused by electric sparks, causing great damage and personal safety.

In areas where ground blitzkrieg may occur, it should be classified as a Category II lightning protection building in one of the following situations:

1) Buildings protected under national key cultural relics.

2) Particularly important buildings such as national halls, office buildings, large-scale exhibition and exposition buildings, large-scale railway stations and airports, state guesthouses, national archives, and important water supply pump houses in large cities.

Note: The airport does not include open spaces and runways where aircraft are parked.

3) Buildings of great significance to the national economy, such as national computing centers and international communication hubs.

4) National special and first-class large gymnasiums.

5) Dangerous buildings that manufacture, use or store fire explosives and their products, and electric sparks are not easy to cause or cause great damage and personal safety.

6) Buildings with hazardous locations in Zone 1 or Zone 21, and electric sparks are not easy to cause or cause great damage and personal safety.

7) Buildings with Zone 2 or Zone 22** hazardous locations.

8) There is a danger of open-air steel closed gas tank.

9) Ministerial and provincial office buildings and other important or densely populated public buildings and fire hazard places where the number of lightning strikes is expected to be greater than times a.

10) General civil buildings such as residential buildings and office buildings or general industrial buildings where the number of lightning strikes is expected to be greater than times a.

In areas where ground blitz may occur, in one of the following cases, it should be classified as a Category III lightning protection building:

1) Provincial key cultural relics protection buildings and provincial archives.

2) Ministerial and provincial office buildings and other important or densely populated public buildings, as well as fire hazard places, where the number of lightning strikes is expected to be greater than or equal to sub-a, and less than or equal to sub-a.

3) General civil buildings such as residential buildings, office buildings, or general industrial buildings where the expected number of lightning strikes is greater than or equal to sub-a, and less than or equal to sub-a.

4) isolated high-rise structures such as chimneys and water towers with a height of 15 m or more in areas with an average thunderstorm day greater than 15 d a; In areas where the average thunderstorm day is less than or equal to 15 d a, isolated high-rise structures such as chimneys and water towers with a height of 20 m or more.

The question is not detailed enough, and others don't know what you want to know, if you reply too much and don't get it, it will reduce his adoption rate, so there are very few people who reply to your kind of questions.

According to the importance of the building, the nature of its use, the possibility of lightning accidents and the consequences, it is divided into three categories.

The classification of lightning protection categories for buildings is divided according to the importance of the building, the nature of use, the possibility and consequences of lightning accidents, and is divided into three categories in total.

For detailed division, please refer to the third part of GB50057-2010 "Code for Lightning Protection Design of Buildings", "Lightning Protection Classification of Buildings".

1. Flash receiver detection.

The lightning receiver keeps the lightning rod, belt, net, wire and metal, and is an important lightning protection equipment, so the lightning receiver will be detected when the lightning protection detection is carried out on the building, and the rolling ball method is usually used to calculate the lightning rod and lightning wire protection range, and the grid method is used to determine the protection range of the lightning protection belt and the net, and detect the grid size and laying method, whether the connection between the lightning protection belt and the down conductor is closed, etc.

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2. Grounding resistance detection.

Therefore, a reputable lightning detection company will test the grounding resistance of the building, understand the layout of the grounding device and check the materials and specifications used in the grounding device, and then judge the service life of the grounding device according to these test data. If the grounding device is used for a long time or the corrosion resistance of the selected material is poor, the grounding device will be selectively excavated for a period during the lightning protection test, and more reasonable treatment measures will be taken depending on the corrosion degree of the material.

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3. Detection of the working status of the lightning protection device.

In the process of lightning protection detection, the working status of the lightning protector will also be checked, mainly to detect the lightning protection module of the power supply and the lightning protection box, lightning protection socket, etc., in addition, the connection line and grounding wire of the lightning protection device will be detected to see the overall working condition of the lightning protection device.

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It is very necessary to carry out lightning protection detection on the building, because the reliable lightning protection equipment will play a good role in protecting the whole building and its occupants, so it should be tested for lightning protection when it is delivered, and it should also be effectively tested for a certain period of time to ensure that the lightning arrester and grounding equipment can be used normally.

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The level of power protection is up:

This value is one of the most important parameters of the surge protection device, which is suitable for both power and signal. This value may not be easy to understand for everyone, but it can be roughly understood as the residual pressure (the truth is that this value is higher than the residual pressure), if this value is higher than the withstand voltage value of your equipment, it may be a good match. When selecting a lightning protector, the UP should generally be less than the withstand voltage of the equipment in order to have the best protection effect.

Nominal operating voltage un:

This value is of little significance, mainly as the reference voltage value of the power surge protector, such as UN220V, indicating that this lightning protector is suitable for use in 220V systems, UN: 400VDC, indicating that this lightning protector is suitable for 400V DC systems.

Maximum continuous operating voltage uc:

This parameter is more important, refers to the long-term use of both ends of the lightning protector, not easy to cause the performance of the lightning protector to change, belongs to the lightning protector can withstand the effective voltage value (generally single-phase 220 system UC275V SPD, three-phase 385V UC255 385V, SPD UC is calculated according to the phase voltage).

Nominal discharge current in:

When the standard 8 20 microsecond lightning impact wave is added to the lightning protector to know the bright surge 10 times, the maximum value of the larger impact current that the lightning protector can bear, and the general power surge protector can withstand up to 20 nominal discharge currents.

The maximum auspicious discharge current imax:

When the standard lightning wave impact of 8 20 s is added to the protection equipment, the maximum impact that the lightning protection equipment can bear is the highest value of the current current, which indicates that the lightning protection device can withstand the impact of this value for 2 times and will not break.

Response time: refers to the action speed of the lightning protector, which is calculated according to the internal components of the lightning protector, such as the response time of TVS 1ns, the response time of varistors 25ns, and the discharge tube 100ns. This parameter is common to power surge protectors and signal surge protectors.

Let's start with the devices that are protected. Secondly, it depends on the size of the power supply of the device, the interface, and there are too many factors. There's no end to it!

The selection of power surge protector is indeed related to the on-site environment, depending on whether you want to apply it to the world. Generally speaking, the first thing to consider is the external environment, whether it is in the urban area or suburbs, or in the mountains, whether there are overhead wires to guide the way, so as to select the important parameter index of the first level of lightning protection - the maximum flow rate; Second, it is necessary to check the category of the power supply system in the building, whether it is single-phase power supply or three-phase power supply, so as to choose whether the lightning protection device is three-phase or single-phase; Third, it is necessary to check whether the power supply environment is bad and whether the power supply voltage is stable, so as to determine another index parameter of the lightning protection device - the maximum continuous working voltage; Fourth, it depends on whether you need additional alarm functions, which can be customized, and finally it is necessary to consider the protection of the circuit when the lightning protector itself is damaged and produces a short circuit, which can be based on the capacity of the backup protection air switch.

Consult the buckle 2576382912

Hello, I am Deutsche Electric's lightning protection manufacturer, you can consult me for specific questions, and I am happy to serve.

If it is lightning protection of transmission lines and substations - Hangzhou Yongde Electric **** (State Grid, China Southern Power Grid top ten).

obo Tsinghua lightning protection canvy Lei Sheng Jie'an Tongda Siemens are all old brands.

At present, the common lightning protection device brands are Aldun, Leian, Zhongguang, Ailao, Dikai, Leierdun, Dijian, Weichuang, Leiguang, Leixun, etc.

Surge protector, also known as lightning arrester, surge protector, surge protector, overvoltage protector, etc., mainly includes power surge protector and signal lightning protector, lightning protector is to prevent damage to the equipment struck by lightning through modern electricity and other technologies. The lightning energy absorption in the arrester is mainly zinc oxide varistors and gas discharge tubes.

Germany's OBO, China's Zhenyu.

Jintianle lightning protection technology ****, the only lightning protection enterprise in China that has won the second prize of national scientific and technological progress.

Hangzhou Yilong lightning protection experts by your side.

There are generally three types of household lightning protection devices: lightning protection sockets, computer lightning protection devices, and signal lightning protection devices. You can choose according to your actual needs.

Lightning protection sockets. Power lightning protection socket is used for fine lightning protection of power supply for low-power distribution equipment with indoor 220VAC power supply. It features three multi-output jacks, independent switches, and built-in failure indication in accordance with IEC61643-1:1998 and GA173-2002 standards.

It can be used in the study and living room. Because the living room is an open environment, there are many power users, and the socket also has designs and functions such as anaerobic flame retardant, bodyguard anti-overload, love double-action protection door, automatic deterioration protection, etc., to protect the safety of household appliances and family members more comprehensively and intimately.

Multi-level protection circuits are adopted, and the core components are selected from international famous brand products, with stable performance;

It has large current capacity, low port clamping voltage and sensitive response;

Easy installation, no special maintenance, long service life and other characteristics;

Aging thermal tripping, short-circuit over-current tripping, and visual alarm of indicator light.

Computer lightning protector.

Computer lightning protector is an overvoltage protector specially designed for Ethernet networks. It is used for RJ45 interfaces such as servers, workstations, and hubs to prevent damage to equipment caused by lightning overvoltage. The input and output of the product adopts RJ45 interface, fast response, low clamping voltage, and the transmission signal rate can reach 155Mbps.

Complies with IEC61643-21:2000 and TD T 1542-2006.

**Surge protectors.

**Lightning protector is used for the signal line using RJ45 interface, **line, which can clamp the lightning overvoltage, electromagnetic pulse, electrostatic voltage and other introduced by the signal cable within the voltage range that the equipment can bear, so as to protect the equipment. Main features: two-stage protection circuit, low residual voltage level, low clamping voltage between signal ports; It has a large through-current capacity, and the maximum discharge current can reach 10ka; The core components are selected from international famous brand products, with fast response, stable performance and reliable working performance; Easy to install, no special maintenance required, long service life.