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  Intelligent Building weak system lightning protection design program
1, lightning Overview
Lightning is a highly destructive natural phenomena, its voltage can be as high as several millions of volts, instantaneous currents can be as high number of 100,000 amperes. For thousands of years, the damage caused by lightning can be described as numerous. After the lightning strike lightning Center 1.5-2Km radius may pose a risk within the over-voltage damage to the equipment line. Lightning disasters like storms, hurricanes are all the same weather (natural) disaster, which with water, drought, criminal, traffic accidents collectively referred to as the impact on social security and economic development in the six disaster.
Generally speaking, with a sudden lightning disasters, diversity, complexity, destructive and selective characteristics. With the modern high-tech industrial base - the rapid development of electronic technology and extensive application of lightning disasters, but to follow, but also presents new features: a significant expansion of the affected side, are particularly vulnerable to invasive and high-tech areas of the closest, loss and harm level increased significantly. In recent years, with the large amount of data equipment and precision instruments increasingly wide range of applications, lightning damage to an accident caused by a rising trend year by year. As the communications equipment, computer networks, precision internal structure of highly centralized, so that equipment withstand over-voltage, over current capacity decreased more vulnerable to lightning damage. Light can cause the computer terminals and communications equipment, the interface is damaged, so that communication interruption, loss of or inability to transmit large amounts of information; serious damage to the network host, resulting in paralysis of the network, work can not proceed. Computer network systems vulnerable to lightning damage to equipment: MODEM (modem), ROUTER (router) SWITCH (switch), HUB, LAN, communications cards, UPS, computer power supply and motherboard.
Second, the basic principles of lightning protection
The so-called lightning protection: through reasonable and effective means of lightning current of energy will be introduced to the earth as much as possible, is to ease, rather than blocking mine or lightning. A complete lightning protection system consists of two aspects: the direct and induced lightning protection lightning protection. The absence of any side is incomplete, defective and potentially dangerous. In general we will be divided into external and internal lightning protection lightning in two parts. By the lightning rod (or lightning belt, lightning networks), Yin Xiaxian external lightning protection and grounding system constitutes the system is mainly caused by lightning in order to protect the building against fire accidents and safety incidents; and internal lightning protection system is to prevent the lightning and other forms of invasive devices, over-voltage damage, which is an external lightning protection system can not guarantee, in order to achieve internal lightning protection required to access the various protected areas of buildings of cables, metal pipes installed by the over-voltage protection device for protection and a good grounding .
1) Multi-level protection principles: based on electrical, microelectronic devices of different functions, protected programs and their respective protective elements of protected areas established for classification protection; under the lightning and operation of transient over-voltage hazard may channel the power lines and data , communication lines should be doing multi-level layer of protection.
2) External passive protection: 0 protected area that is external to passive protection, mainly rely on lightning rod (nets, lines, belts), and grounding devices. Protection principle: When Thundercloud discharge close to the ground, it will distort the electric field above the ground. In the lightning conductor (line) at the top to form a partial distortion of the electric field strength in order to influence the development direction of lightning discharges pilot and guide lightning to the lightning conductor (line) discharge, and through the ground Yinxia Xian, grounding devices will lightning current into the earth, so that was to protect objects against lightning strikes. This is a long-proven method of effective anti-lightning directly stroke. All exposed metal building components (pipes), should be with the lightning protection network (belt line) a good connection.
  3) Internal Protection
A, the power part of the protection: thunder and lightning against the invasion mainly through the routes. A specially designed high-pressure part of the Power Authority of the high-voltage lightning protection devices, power transmission lines to the power-to-ground restricted to less than 6000 volts (IEC62.41), while the line to line, you can not control. So, for 380v low voltage line over-voltage protection should be carried out, according to national norms should be divided into three sections: It is recommended in high-voltage distribution transformers back-to-plate in front of the total construction within the core wire ends of cable deal to install surge protectors for a protection; in building overall distribution of switchboards to electric box on each floor within the core wire between the two ends of the cable deal to install surge protectors for two protection; at all important, sophisticated equipment, as well as the front-end UPS deal to install Surge protector, as the three protection. The purpose is to use shunt (limiting) technology that uses high-energy absorption of the shunt device (SPD) will be lightning over-voltage (pulse) of energy streaming leaked into the earth, to protect the purpose.
B, the signal part of the protection: For information systems, the protection should be divided into coarse and fine protection. Rough order of magnitude under the protection of protected areas belong to determine the level of fine to protect electronic equipment according to the sensitivity to find out. The main considerations such as: satellite receiving systems, telephone systems, network line systems, monitoring systems. Recommended that all information systems into the buildings within the cable core wire end of the deal to install surge protectors, cables, air lines correspond to the ground and make a shield grounding, which should pay attention to system equipment on-line voltage, transmission rate, according to I type, so as to ensure that the system to work properly.
C, ground handling: In the computer room of the building, will require a good grounding system, because all mine system needs stemming the flow through the grounding system to lightning into the earth, to protect the equipment and personal safety. If the computer room grounding system has done well, will not only cause equipment failures, burned-out components, serious harm will be the safety of staff. Another anti-interference shielding, anti-static problems need to establish a good ground system to resolve. General grounding system throughout the building are: building ground network (the network connecting Faraday), the power ground (resistance less than 10 requests in Europe), logical (also known as signal ground), lightning ground and so on, until the potential connection. To ensure that the system working properly, should be annually precision ground resistance meter, resistance testing ground. Grounding device consists of grounding and some accessories, auxiliary material composition. Grounding device selection and construction of major decisions on the soil structure, namely, the rate of soil ground resistance . Different layers of soil structure is different, thus blocking the rate of to different grounding devices in order to increase efficiency, the use of long-term Resistance Reducing Agent.
Third, the scene of an overview of

Intelligent residential quarters for the mine concerned, mainly in the following areas: lightning directly stroke protection and lightning protection, lightning protection, which includes the strong electricity system and the weak (weak system also can be divided into monitoring system , computer network systems, fire systems, cable TV, access control system in this number of) these two points. All mine must be conducted under the premise of improving lightning directly stroke lightning protection, to ensure that the intelligent system safe and efficient conduct of operations to ensure the harmonious development of the entire district.



4, mine design
Reference Standard
1, "Building lightning protection design specifications" GB50057-94
2, "Installation earthing of electrical installations in construction and acceptance norms" GB50169-92
3, "Installation of electrical installations in construction and acceptance of norms" GBJ232-82
4, "computer room design specifications" GB50174-94
5, "civil electrical design specification" JGJ/T16-92
7, "Lightning protection of electronic equipment Guidance" GB7450-87
8, "Lightning electromagnetic pulse protection," (Part I): the general principles of IEC61312-1
9, "Building lightning protection of electronic information systems technical specifications" GB 50343-2004
Design
(A) Building lightning directly stroke protection (residential quarters have been a perfect lightning directly stroke protection measures, in this scenario not do to consider)
(B) The lightning protection
Monitoring System Lightning Protection
Design basis
According to GB 50343-2004 "Building lightning protection of electronic information systems technical specifications," Chapter V: mine design; GB 50057-94 (2000 Edition) "Building Lightning Protection Design Code," Chapter VI: Anti-lightning electromagnetic pulse; Article 4, paras 6.4.1 to 6.4.12 of LPZ1 area right surge protector (SPD) requirements and YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, the network data line monitoring system using SPD requirements, refer to IEC 61643-3 "low-voltage system, surge protectors," Part 3 " In the telecommunications system in the application of SPD "and IEC 61644-1 1997" Communication systems SPD "standards for the communication line of protection is required to use the equipment into the cable line 8/20s waveform, the signal-pass flow capacity 3KA Surge protector will be a few kV line induced lightning overvoltage limit to the device to allow the value. In accordance with YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD's choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, monitoring system network data line with the SPD the requirements of the specifications, flow passage size should be larger than 3KA.
A, front-end equipment, lightning protection
PTZ camera with a gun in front of power lines, video lines, PTZ control circuit monitoring system installed on the triple lightning device, model: HD-CCTV-PVC / A, as the front-end camera gun power, video and control signal lines Lightning Protection. Features: product uses high-quality semiconductor components, quality, stability; includes gun camera power, video signal, PTZ control signal three kinds of lightning arrester, triple one, easy installation; right voltage fast response, Ta 1 ns; case-bit accurate , the output residual depression, low insertion loss, reasonable design, craft elegant, transmission performance, superior, can effectively protect video equipment and to ensure the normal image display requirements; effectively inhibit the transmission lines like the guns on the induced over-voltage pulse, to avoid the video surveillance equipment damage due to over-voltage pulses. Quantity: 22 sets.
B, control room equipment, lightning protection terminal
In the control room (Security Room) 220V power supply into the line to install a set of C-level power surge protection box, as a control room power system lightning protection, model: HD-D220C-XS40 (box type). Features: Core components use the latest high-capacity surge absorption components, MOV, rigorous aging, the quality and stability; Maximum Flow Capacity (8/20s): Imax = 80KA / line; limit low voltage: Up 1.4KV; response time for fast : tA 25ns; installation of over-current to pull off an overheated device, when the overcurrent protection device due to thermal breakdown failure, auto-off from the grid to ensure the safe operation of the system; own working state directives device failure instructions for the red failure light show to facilitate routine maintenance; with automatic lightning counter, remote terminal, and a normal or fault detection functions; parallel installation, no insertion loss. Quantity: 1 set.
In the control room equipment, power front-end installation of lightning protection socket, model: HD-D220CZ, as a control room equipment, lightning protection power supply 3. Features: National Standard Generalized jack design; core components using the latest high-capacity surge absorption components MOV, quality and stability; Flow capacity, maximum discharge current Imax = 10KA; response time for fast, Ta 25ns; series to install. Number 10 (the number can be adjusted according to actual use).
In the control room the gun camera video signal into the line to install 16 integrated video signal arrester, model: HD-XH-16GVD / A, Flow capacity 5KA, as the video signal line protection. Product Features: 16 integrated design, easy to install, beautiful and generous. Clamping semiconductor devices using high-quality, quality, stability, and clamp accurate; output residual depression; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for video signal transmission lines lightning protection; series to install. Quantity: 1 set. (Control room has 22-channel video into the line, a set of 16 integrated lightning protection device of video signal 16, the remaining six single-port video signal lightning HD-XH-GVD / A for protection)
All access to the control room PTZ control circuit wiring lightning protection device, model: HD-XC-YT / A, as a control room PTZ control circuit of lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for signal transmission line monitoring system Lightning Protection; series to install. Number 1.
infrared Radio System Lightning Protection
Design basis
According to GB 50343-2004 "Building lightning protection of electronic information systems technical specifications," Chapter V: mine design; GB 50057-94 (2000 Edition) "Building Lightning Protection Design Code," Chapter VI: Anti-lightning electromagnetic pulse; Article 4, paras 6.4.1 to 6.4.12 of LPZ1 area right surge protector (SPD) requirements and YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, the network data line monitoring system using SPD requirements, refer to IEC 61643-3 "low-voltage system, surge protectors," Part 3 " In the telecommunications system in the application of SPD "and IEC 61644-1 1997" Communication systems SPD "standards for the communication line of protection is required to use the equipment into the cable line 8/20s waveform, the signal-pass flow capacity 3KA Surge protector will be a few kV line induced lightning overvoltage limit to the device to allow the value.
Implementation methodology
In the infrared to the radio front-end installation of lightning protection equipment, power sockets, Model: HD-D220CZ, as a control room equipment, lightning protection power supply 3. Features: National Standard Generalized jack design; core components using the latest high-capacity surge absorption components MOV, quality and stability; Flow capacity, maximum discharge current Imax = 10KA; response time for fast, Ta 25ns; series to install. Number 2 (can be adjusted according to actual use levels).
In the infrared signal output of the radio host of the radio-infrared lines installed lightning protection device-specific, model: HD-XC-DATA / A, as the infrared signal output of the radio system, lightning protection circuit. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for IR signal to the radio system transmission line lightning protection; series to install. Number 9.
In the infrared to the radio host's power output lines to install lightning protection devices dedicated infrared radio, model: HD-DC24, as the infrared to the radio system power output line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 36V; response time for fast, Ta 1ns; for IR on the radio system power transmission line lightning protection; series to install. Number 1.
In the infrared transmitter of the radio system, the signal input line to install lightning protection devices dedicated infrared radio, model: HD-XC-DATA / A, as the infrared signal output of the radio system, the lightning protection circuit. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for IR signal to the radio system transmission line lightning protection; series to install. Number 9.
In the infrared emission of the radio system (receiver) line-side power output of the radio installation of infrared-specific lightning protection device, model: HD-DC24, as the infrared to the radio system power output of the lightning protection circuit. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 36V; response time for fast, Ta 1ns; for IR on the radio system power transmission line lightning protection; series to install. The number of 10. (Transmitter and receiver in the same location, can share the same low-voltage power supply SPD)
Access Control Intercom System Lightning Protection
Design basis
According to GB 50343-2004 "Building lightning protection of electronic information systems technical specifications," Chapter V: mine design; GB 50057-94 (2000 Edition) "Building Lightning Protection Design Code," Chapter VI: Anti-lightning electromagnetic pulse; Article 4, paras 6.4.1 to 6.4.12 of LPZ1 area right surge protector (SPD) requirements and YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, the network data line monitoring system using SPD requirements, refer to IEC 61643-3 "low-voltage system, surge protectors," Part 3 " In the telecommunications system in the application of SPD "and IEC 61644-1 1997" Communication systems SPD "standards for the communication line of protection is required to use the equipment into the cable line 8/20s waveform, the signal-pass flow capacity 3KA Surge protector will be a few kV line induced lightning overvoltage limit to the device to allow the value of
Implementation methodology
In the Management Center Video cascading lines per unit (horizontal lines) lightning protection devices installed on the video, model: HD-XH-GVD / A, as a cascade video line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual depression; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for video signal transmission lines lightning protection; series installation . Quantity: 136.
In the management center to each unit of the audio line (horizontal line) data signals installed lightning protection devices, model: HD-XC-AU, as a cascade audio line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for audio signal transmission line access control system The Lightning Protection; series to install. The number of 136.
In the management center to each unit RS485 (standard line) lightning protection devices installed on the 485 line, model: HD-XC-YT / A, as a cascade RS485 control line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for Access Control System RS485 signal transmission line The Lightning Protection; series to install. The number of 136.
In each unit of the host access control system into the line-out installation of 220V power supply to install D-class power surge protector, model: HD-D220M20 / A, as a mainframe access control power supply line lightning protection. Features: Using high-quality components, high-capacity absorption MOV, widely used in single-phase power supply system of the fine-level lightning protection; built-in fuse protection device; response time is short: tA 25ns; Nominal Flow Capacity thunder and lightning (10KA); output residual down Up 1.4KV; parallel installation. Quantity: 136.
In each video outlet at the host access control unit (vertical lines) lightning protection devices installed on the video, model: HD-XH-GVD / A, as the host access control vertical video line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual depression; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for video signal transmission lines lightning protection; series installation . Quantity: 136.
In each cell door at the host 18V low-voltage power supply outlet (vertical lines) to install low-voltage power supply arrester, model: HD-DC, as a cascade video line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual depression; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for video signal transmission lines lightning protection; series installation . Quantity: 136.
In each cell door at the host's audio line outlet (vertical lines) data signals to install lightning protection devices, model: HD-XC-AU, as the host access the audio line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for audio signal transmission line access control system The Lightning Protection; series to install. The number of 136.
In each cell door host at RS485 outlet (vertical lines) lightning protection devices installed on the 485 line, model: HD-XC-YT / A, as the host RS485 access control circuit lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for Access Control System RS485 signal transmission line The Lightning Protection; series to install. The number of 136.
Background Music System Lightning Protection
Design basis
According to GB 50343-2004 "Building lightning protection of electronic information systems technical specifications," Chapter V: mine design; GB 50057-94 (2000 Edition) "Building Lightning Protection Design Code," Chapter VI: Anti-lightning electromagnetic pulse; Article 4, paras 6.4.1 to 6.4.12 of LPZ1 area right surge protector (SPD) requirements and YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, the network data line monitoring system using SPD requirements, refer to IEC 61643-3 "low-voltage system, surge protectors," Part 3 " In the telecommunications system in the application of SPD "and IEC 61644-1 1997" Communication systems SPD "standards for the communication line of protection is required to use the equipment into the cable line 8/20s waveform, the signal-pass flow capacity 3KA Surge protector will be a few kV line induced lightning overvoltage limit to the device to allow the value of
Implementation methodology
In the background music to install lightning protection equipment, power front jack, model: HD-D220CZ, as a control room equipment, lightning protection power supply 3. Features: National Standard Generalized jack design; core components using the latest high-capacity surge absorption components MOV, quality and stability; Flow capacity, maximum discharge current Imax = 10KA; response time for fast, Ta 25ns; series to install. Number 3 (which can be adjusted according to actual use levels).
In the background music for each channel audio output devices installed on the audio line dedicated line lightning protection device, model: HD-XC-AU, as background music, the audio output circuit of lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 270V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for audio signal transmission line lightning protection; series to install. The number of 30.
Parking System Lightning Protection
Design basis
According to GB 50343-2004 "Building lightning protection of electronic information systems technical specifications," Chapter V: mine design; GB 50057-94 (2000 Edition) "Building Lightning Protection Design Code," Chapter VI: Anti-lightning electromagnetic pulse; Article 4, paras 6.4.1 to 6.4.12 of LPZ1 area right surge protector (SPD) requirements and YD / T 5098-2001 "Communications Authority (station) lightning over-voltage protection project design specifications," Part V: SPD choice; Article 5.3: Signal-line with the SPD; Article 5.5: computer, control terminals, the network data line monitoring system using SPD requirements, refer to IEC 61643-3 "low-voltage system, surge protectors," Part 3 " In the telecommunications system in the application of SPD "and IEC 61644-1 1997" Communication systems SPD "standards for the communication line of protection is required to use the equipment into the cable line 8/20s waveform, the signal-pass flow capacity 3KA Surge protector will be a few kV line induced lightning overvoltage limit to the device to allow the value of
Implementation methodology
In the parking lot into the system host a 220V power supply line-out to install install the D-class power surge protector, model: HD-D220M20 / A, as a mainframe access control power supply line lightning protection. Features: Using high-quality components, high-capacity absorption MOV, widely used in single-phase power supply system of the fine-level lightning protection; built-in fuse protection device; response time is short: tA 25ns; Nominal Flow Capacity thunder and lightning (10KA); output residual down Up 1.4KV; parallel installation. Quantity: 4.
Barrier in the parking lot management system to sense the coil line to install 485 line arrester, model: HD-XC-DATA / A, as a sense coil to the Barrier to the host signal line lightning protection. Features: Using high-quality semiconductor clamping device, stable quality, clamp accurate; output residual down, Up 18V; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for Access Control System RS485 signal transmission line The Lightning Protection; series to install. Number 8.
In the parking lot of the management of all computer managed host network signal transmission lines lightning protection is installed on a computer network signal device, model: HD-XNET-RJ45 / 4, as a car park management system, computer network signal transmission lines lightning protection. Features: Import semiconductor clamping device, stable quality, clamp accurate; output residual depression; low insertion loss, Ae 0.3dB; response time for fast, Ta 1ns; for computer networks, signal transmission lines lightning protection; series installation. Number 5.
ground handling and shielding measures in line
All apartments reserved for the use of lightning protection lightning protection grounding access locations, from the reserve if the lightning arrester ground point too far, you need to dig a basis for the building itself lightning grounding.
1, underground lines, wires, pipes, PE lines and information lines of metal skin should be well grounded in-home side. Such as overhead or non-home pre-screened who should take in before the 20-meter indoor side pipe shield wire sets, and to shield connected with the mine to secure.
2, control room, should be metal computer desks, computer equipment, control equipment, lightning protection earthing metal shell and reliable connection.
3, outdoor camera gun to the decoder signal lines between the exposed and should cover stainless steel or copper metal tube, and gun metal shield enclosure and camera decoder Yin Xiaxian metal shield shell and reliable connection of the pole.
4, shielding to reduce electromagnetic interference with the basic measures, should adopt the following measures: external shielding measures, the line laid in the right path, circuit shielding, appropriate combination of these measures.
5, in order to improve the electromagnetic environment, all the buildings together with the large-size metal parts should be equipotential bonding together and connected with the grounding device. The roof of metal surfaces, metal surface elevation, concrete and metal doors and windows inside the steel framework for equipotential grounding must be carried out.
6, in the need to protect the space, when using shielded cable, at least at both ends of the shield, and should do so in the lightning protection zone at the junction of equipotential connection. When the microelectronic devices the system requirements to do so only at one end of the potential connection, you can wear a metal pipe into shielded cable, metal pipe at one end so Equipotential.

5, the system lightning protection diagram (omitted)
Infrared system for shooting lightning diagram
Schematic diagram of a computer network system lightning protection
Lightning Monitoring System Diagram
Video Intercom System lightning protection diagram

6, operation and maintenance
1, surge arrester installed, should check all the wiring is installed correctly, and then run tests to see if systems and equipment is working properly, with or without an exception, if so, should be checked in time until the entire system functioning normally.
2, the annual address before the thunderstorm season, grounding system inspection and maintenance. Check whether the main fastening connections, contact is good, whether grounded Yin Xiaxian rust, whether on the ground near the grounding anomaly, if necessary, samples should be dug underground parts of rust on the ground, and if we find issues should be a timely manner.
3, grounding of the grounding resistance measurements should once a year.
4, each year before the thunderstorm season in the operation of surge arresters should conduct a test, thunderstorm season to enhance the appearance inspection, such as the detection of unusual to be a timely manner.

 
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