Code for supervision and acceptance of construction quality of lightning protection system
Some standard content:
ICS07.060
Meteorological Industry Standard of the People's Republic of China
QX/T1052009
Code for supervision and acceptance of construction quality of lightning protection system
2009-06-07 Issued
Meteorological Bureau
2009-11-01 Implementation
People's Republic of China
Meteorological Industry Standard
Code for supervision and acceptance of construction quality of lightning protection system QXT1052009
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Normative reference documents
Terms and definition
General description
Grounding device
Material structure and minimum size of grounding device
Grounding resistance value test of grounding device
Natural grounding device of building
Foundation grounding device lightning protection grid··
Grounding resistance test terminal
Safe distance of grounding device·
Artificial grounding device:
Grounding device connection
Lightning protection of core tube of high-rise building·
Down conductor
Gaining ring
Lightning terminal·
Lightning rod
Lightning strip
Roof protection Lightning grid
Lightning arrester·
Self-arrester..
Glass curtain wall·
Equipotential connection
Equipotential connection in lightning protection area
Total equipotential and auxiliary equipotential connection
Equipotential connection of electronic systembzxz.net
Surge protector SPD
Power supply SPD
Signal SPD
Electronic system
Electronic system room lightning electromagnetic pulse protection electronic system and its pipeline safety distance
Laying of electronic system pipelines
Form of grounding system of electronic system
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Automobile gas station (gas station)
Mobile base station
Mobile communication base station power supply system
Lightning protection and grounding of tower
Lightning protection and grounding of antenna feeder system
Joint grounding system of mobile communication base station
Grounding wire system
16.6 Grounding resistance
17 Bridge
Bridge direct lightning protection
Bridge equipotential and lightning protection induction
17.3 Bridge auxiliary facilities (toll station)
18 Rail transit
Rail transit system architecture 18.2
Grounding of communication equipment
18.3 Lightning protection device for underground rail transit system18.4 Grounding device for DC system
19 Substation
Appendix A (Informative Appendix)
Manual for supervision and acceptance of construction quality of lightning protection deviceFilling and evaluation standards for the "Manual for supervision and acceptance of construction quality of lightning protection device"Appendix B (Informative Appendix)
Appendix C (Informative Appendix)Comprehensive evaluation standards and evaluation methods for supervision and acceptance management of construction quality of lightning protection deviceAppendix D (Informative Appendix)
Comprehensive inspection and evaluation of supervision and acceptance of construction quality of lightning protection device Table "I) Small project assessment table for construction quality supervision and acceptance of lightning protection devices<II Appendix E (Informative Appendix) Measurement method of ground impedance and soil resistivity Appendix F (Normative Appendix) Auxiliary verbs used in clause descriptions: 46
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This standard mainly adopts GB50057-1994 "Code for Design of Lightning Protection of Buildings" (2000 edition), GB/T21431-2008 "Technical Specifications for Testing of Lightning Protection Devices of Buildings", GB/T18802.12-2006/IEC61643-12:2002 "Surge Protective Devices (SPD) for Low Voltage Distribution Systems Part 12 : Guidelines for selection and use", GB/T21714.1-2008/IEC62305-1:2006 "Lightning protection Part 1: General", GB/T21714.2-2008/IEC62305-2:2006 "Lightning protection Part 2: Risk management", GB/T21714.3-2008/IEC62305-3:2006 "Lightning protection Part 3: Physical damage and life hazards to buildings", GB/T21714.4-2008IEC62305-4:2006 "Lightning protection Part 4: Electrical and electronic systems in buildings" and other standards. Appendix F of this standard is a normative appendix, and Appendix A, Appendix B, Appendix C, Appendix D and Appendix E are informative appendices. This standard was proposed by the National Technical Committee for Standardization of Meteorological Disaster Prevention and Mitigation (SAC/TC345). This standard is under the jurisdiction of the National Meteorological Disaster Prevention and Mitigation Standardization Technical Committee (SAC/TC345). The drafting unit of this standard: Guangdong Lightning Protection Center. The main drafters of this standard: Yang Shaojie, Jin Liang, Yang Hui, Li Bin, Chen Chang, Liu Dingqi, Hou Yong, Wei Yinghua, Wang Xiaobo. 1 Scope
Specifications for construction quality supervision and acceptance of lightning protection devices This standard specifies the items, requirements and methods for construction quality supervision and acceptance of lightning protection devices. This standard applies to construction quality supervision and acceptance of lightning protection devices. This standard does not apply to:
a) vehicles, ships, aircraft and offshore devices; b) high-pressure pipelines;
c) power lines.
Normative references
QXT1052009
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard; however, parties reaching an agreement based on this standard are encouraged to investigate whether the latest versions of these documents can be used. For any undated referenced document, the latest version applies to this standard. GB/T17949.1-2000 Guide for measurement of soil resistivity, ground impedance and ground potential of grounding systems Part 1: Routine measurements GB/T18802.12-2006 Surge protective devices (SPD) for low voltage power distribution systems Part 12: Guide for selection and use (IEC61643-12:2002, IDT)
GB/T21431-2008 Technical specification for detection of lightning protection devices for buildings GB/T21714.1 1-2008 Lightning protection Part 1: General (IEC62305-1: 2006 IDT) GB/T21714.2-2008
GB/T21714.3-2008
Lightning protection Part 2: Risk management (IEC62305-2: 2006, IDT) Lightning protection Part 3: Physical damage to buildings and life hazards (IEC62305-3: 2006, GB/T21714.4-2008 Lightning protection Part 4: Electrical and electronic systems in buildings (IEC62305-4:2006, IDT) GB50016-2006
GB50045-2001
GB50057-1994
GB50074-2002
GB50096-1999
GB50157-2003
GB50165-2002||t t||GB50169—2006
GB50253—2003
GB50303—2002
GB50311—2007
GB50312—2007
Code for Fire Protection Design of Buildings
Code for Fire Protection Design of High-rise Civil Buildings
Code for Lightning Protection Design of Buildings (2000 Edition) Code for Design of Petroleum Depots
Code for Residential Design (2003 Edition)|| tt||Metro Design Specifications
Design and Construction Specifications for Automobile Gasoline and Gas Stations (2006 Edition)Construction and Acceptance Specifications for Grounding Devices for Electrical Installation EngineeringOil Pipeline Engineering Design Specifications
Construction Quality Acceptance Specifications for Building Electrical EngineeringDesign Specifications for Integrated Wiring System Engineering
Integrated Wiring System Engineering Acceptance Specifications
GB/T50314-2006Intelligent Building Design StandardDL/T475-2006
QX10.2-20 07
Guidelines for measuring characteristic parameters of grounding devices
Surge protectors Part 2: Principles of selection and use in low-voltage power systems
Kangyongyuanshan
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YD5068-1998 Specification for lightning protection and grounding design of mobile communication base stations YD/T5098-2001 Specification for lightning overvoltage protection engineering design of communication bureaus (stations) 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Lightning protection system A complete set of devices used to protect a space from lightning effects, which consists of two parts: an external lightning protection device and an internal lightning protection device. Note: In certain cases, a lightning protection device may consist of only an external lightning protection device or an internal lightning protection device. 3.2
air-terminationsystem
Lightning rods, lightning strips (wires), lightning nets that directly receive lightning strikes, as well as metal roofs and metal components used for lightning termination. 3.3
downconductorsystem
The part of the lightning protection device that conducts lightning current from the lightning receptor to the grounding device. 3.4
earthterminationsystemThe sum of the grounding body and the grounding wire, which is used to conduct lightning current and disperse it to the earth. 3.5
earthconductor
The connecting conductor from the downconductor disconnection card or the line change point to the grounding body: or the connecting conductor from the grounding terminal, equipotential bonding belt to the grounding body or grounding device.
naturalearthingsystemA general term for various metal components that have a grounding function but are not specially set up for this purpose, steel bars in reinforced concrete, buried metal pipes and equipment, etc.
Artificial grounding system is a general term for various metal components specially set up for grounding function. 3.8
Large grounding system is the grounding device of substations with voltage levels of 110kV and above, the grounding device of thermal power plants and hydropower plants with installed capacity of more than 200MW, or the grounding device with equivalent area of more than 5000m2. 3.9
Independent grounding system is the grounding device of DC ground, AC working ground, safety protection ground, lightning protection ground and power supply system ground that are independent of each other between systems. 3.10
Earthing reference point is the only connection point between the common grounding system and the equipotential connection network of the system. 3.11
Lightning protection grounding 3.12
Protective grounding protection earthing
Also called safety grounding, for electrical safety, one or more points of a system, device or equipment are grounded. Grounding impedance grounding impedance
The ratio of the potential difference between the grounding device and the remote potential zero point to the current flowing into the ground through the grounding device. 3.14
Soil resistivity
soilresistivity
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A parameter that characterizes the conductivity of soil, which is the flow of soil impedance per unit volume, in ohm-meter (·m). It refers to the impedance measured between the two opposite sides of a soil cube. 3.15
Total equipotential bonding total equipotential bonding MEB connects various separate devices and conductive objects together with equipotential bonding conductors or surge protectors to reduce the potential difference generated between them by lightning current.
Supplementary equipotential bonding
supplementary equipotential bonding SEB connects the exposed conductive parts and external conductive parts that can be touched at the same time in a local area so that they are at the same potential in the local area.
Direct equipotential bondingdirect equipotential bonding Directly grounding the exposed conductive parts of electronic systems and electrical systems with metal wires. 3.18
Indirect equipotential bondingindirect equipotential bonding Grounding the exposed conductive parts of electronic systems and electrical systems through surge protectors. 3.19
Equipotential bonding networkbondingnetwork A network of conductors that connect the exposed conductive parts of a system to the same potential. 3.20
Equipotential bonding stripequipotentialbondingbar A metal strip to which metal devices, external conductive objects, power lines, communication lines and other cables are connected so that they can be connected to the lightning protection device at the same potential.
Local equipotential bonding striplocalbondingbar An equipotential bonding strip at the interface of two lightning protection zones after the LPZO area. 3.22
commonearthingsystem
Common grounding system
All interconnected metal devices of a building connected to the grounding device, including lightning protection devices. 3.23
electromagnetismenvironmentalzone specifies the area of electromagnetic conditions.
capacitor memory
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shielding
a housing, barrier or other object (usually conductive) that can weaken the effect of the electric field or magnetic field on one side on the device or circuit on the other side.
gridlikespatial shield is used for magnetic field shielding of buildings or rooms, and is generally composed of steel bars, metal frames and metal supports in the concrete of the building. 3.27
directlightningflash
lightning directly strikes a building, other objects, the earth or a lightning protection device, producing electrical effects, thermal effects and mechanical forces. 3.28
lightningelectromagneticimpulseLEMP The electric and magnetic fields generated by the electromagnetic radiation associated with lightning discharge are coupled into the electrical or electronic system, thereby generating interfering currents or voltages.
Lightning protection zone LPZ The lightning electromagnetic environment area that needs to be specified and controlled. 3.30
High-rise building high building
Buildings with ten floors or more or a building height of more than 24m. 3.31
Medium-high buildingMedium high buildingBuildings with seven to nine floors.
Multilayer building
Multi-story building
Buildings with four to six floors.
Low-rise building
Low building
Buildings with one to three floors.
Parapet wall
A low wall above the roof of a building's exterior wall.
Deep foundationDeep ground work
The foundation of a building with a depth exceeding 5m, generally using pile foundations, reinforced concrete caissons, caissons and underground continuous walls as foundations. 3.36
Shallow foundationLow ground work
The foundation of a building with a depth not exceeding 5m.
Cushion cap
Earth girder
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A straight or curved member supported by a support across a certain space to bear loads not parallel to the axial direction transmitted from the roof, floor, wall, etc.
Stake
A pile-shaped supporting member sunk, driven, pressed or cast into the foundation. 3.40
Voltage protection level voltageprotectionlevelV.
A performance parameter that characterizes the voltage between the SPD limiting terminals, and its value can be selected from the preferred value list. This value should be greater than the highest value of the limiting voltage.
Lightning current
The current value flowing through the lightning strike point.
surgeprotectiondeviceSPD
Surge protector
A device used to limit transient overvoltage and shunt surge current. It should contain at least one nonlinear voltage limiting element, also known as a surge protector. 3.43
Switching type electrical protector voltageswitchingtypeSPD has high impedance when there is no surge, and suddenly changes to low impedance when a voltage surge occurs. Discharge gaps, gas-filled discharge tubes, thyristors and triac components are usually used as components of this type of SPD. 3.44
Voltage limiting type surge protector voltagelimitingtypeSPD has high impedance when there is no surge, and the impedance decreases continuously with the increase of surge current and voltage. Varistors and suppression diodes are usually used as components of this type of SPD.
Electronic systemelectronicsystem
A system composed of sensitive electronic components (such as communication systems, computers, control and instrumentation systems, radio systems, power electronic devices).
Safety distance safedistance
The distance between two conductors that will not cause dangerous spark discharge or electromagnetic radiation to endanger the safety of the equipment. 3.47
Rolling sphere method
A sphere with a rolling sphere radius as the radius rolls along the part that needs to be protected from direct lightning strikes: when the sphere only touches the lightning rod (including metal objects used as lightning rods), or only touches the lightning rod and the lightning rod and the ground (including metal objects in contact with the ground and able to withstand lightning strikes), but does not touch the part that needs to be protected, then the part is protected by the lightning rod. 3.48
Short-circuited ring shortcircuitedring
Connect all the steel bars that need to be connected with a ring-shaped metal object. 349
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Location of the ground of the inspected building [horizontal distance from adjacent buildings in the four directions of east (E), south (S), west (W), and north (N) 4
General description
The contents of the construction quality supervision and acceptance of lightning protection devices in this standard include eight aspects, namely pile foundation, cap, ground beam, column reinforcement down conductor, equalizing ring, lightning protection grid lightning strip, lightning rod, equipotential and SPD, including 56 specific items in total, see the "Lightning Protection Device Construction Quality Supervision and Acceptance Manual" in Appendix A of this standard, and the filling and evaluation standards of the 56 items are shown in Appendix B of this standard. The comprehensive evaluation standards and methods for the construction quality supervision and acceptance of lightning protection devices are shown in Appendix C of this standard, and its comprehensive evaluation table and small project evaluation table are shown in Appendix D of this standard. 5
Grounding device
Material structure and minimum size of grounding device
The materials, structure and minimum size of the building as a lightning protection grounding device shall meet the requirements of Table 1 Table 1 #
Material structure and minimum size of grounding device Material
Stainless steel
Copper stranded wire
Single round copper
Single flat copper
Single round copper
Whole copper plate
Single round steel
Hot-dip galvanized steel pipe
Hot-dip galvanized Flat steel
Hot-dip galvanized steel plate
Hot-dip copper round steel
Bare round steel
Bare flat steel
Hot-dip galvanized steel strand
Hot-dip galvanized angle steel
Circular conductor
Flat conductor
Vertical grounding device
Diameter 15mm
Diameter 20mm
Diameter 16mm
Diameter 25mm
Diameter 14mm
50mm×50mm×3mm||t t||16mm in diameter
Test of grounding resistance value of grounding device
Minimum size
Horizontal grounding device
10mm in diameter
10mm in diameter
10mm in diameter
The test of grounding resistance value of grounding device shall meet the requirements of Appendix E of this standard, and the grounding resistance value of grounding device shall meet the requirements of Table 2 Grounding plate
500mm×500mm
500mmX500mm
Minimum per share Diameter 1.7mm
Diameter 8mm
Minimum thickness 2mm
Minimum wall thickness 2mm
Minimum thickness 2mm
Hot-dip galvanizing
Minimum wall thickness 2mm
Minimum thickness 3mm
Minimum thickness 3mm
Radial copper plating layer at least 250
m, copper content 99.9%
Minimum thickness 3mm
Minimum diameter of each piece 1.7mm
Minimum thickness 2mm44
voltage limiting type SPD has high impedance when there is no surge, and the impedance decreases continuously with the increase of surge current and voltage. Varistors and suppression diodes are usually used as components of this type of SPD.
electronic systemelectronicsystem
A system composed of sensitive electronic components (such as communication systems, computers, control and instrumentation systems, radio systems, power electronic devices).
safe distancesafedistance
The distance between two conductors so that no dangerous spark discharge or electromagnetic radiation will endanger the safety of the equipment. 3.47
Rolling sphere method
A sphere with the rolling sphere radius as the radius rolls along the part that needs to be protected from direct lightning strikes: when the sphere only touches the lightning receptor (including metal objects used as lightning receptors), or only touches the lightning receptor and the lightning receptor and the ground (including metal objects in contact with the ground and capable of withstanding lightning strikes), but does not touch the part that needs to be protected, then the part is protected by the lightning receptor. 3.48
Short-circuited ring
Connect all the steel bars that need to be connected with a ring-shaped metal object. 349
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Location of the ground of the inspected building [horizontal distance from adjacent buildings in the four directions of east (E), south (S), west (W), and north (N) 4
General description
The contents of the construction quality supervision and acceptance of lightning protection devices in this standard include eight aspects, namely pile foundation, cap, ground beam, column reinforcement down conductor, equalizing ring, lightning protection grid lightning strip, lightning rod, equipotential and SPD, including 56 specific items in total, see the "Lightning Protection Device Construction Quality Supervision and Acceptance Manual" in Appendix A of this standard, and the filling and evaluation standards of the 56 items are shown in Appendix B of this standard. The comprehensive evaluation standards and methods for the construction quality supervision and acceptance of lightning protection devices are shown in Appendix C of this standard, and its comprehensive evaluation table and small project evaluation table are shown in Appendix D of this standard. 5
Grounding device
Material structure and minimum size of grounding device
The materials, structure and minimum size of the building as a lightning protection grounding device shall meet the requirements of Table 1 Table 1 #
Material structure and minimum size of grounding device Material
Stainless steel
Copper stranded wire
Single round copper
Single flat copper
Single round copper
Whole copper plate
Single round steel
Hot-dip galvanized steel pipe
Hot-dip galvanized Flat steel
Hot-dip galvanized steel plate
Hot-dip copper round steel
Bare round steel
Bare flat steel
Hot-dip galvanized steel strand
Hot-dip galvanized angle steel
Circular conductor
Flat conductor
Vertical grounding device
Diameter 15mm
Diameter 20mm
Diameter 16mm
Diameter 25mm
Diameter 14mm
50mm×50mm×3mm||t t||16mm in diameter
Test of grounding resistance value of grounding device
Minimum size
Horizontal grounding device
10mm in diameter
10mm in diameter
10mm in diameter
The test of grounding resistance value of grounding device shall meet the requirements of Appendix E of this standard, and the grounding resistance value of grounding device shall meet the requirements of Table 2 Grounding plate
500mm×500mm
500mmX500mm
Minimum per share Diameter 1.7mm
Diameter 8mm
Minimum thickness 2mm
Minimum wall thickness 2mm
Minimum thickness 2mm
Hot-dip galvanizing
Minimum wall thickness 2mm
Minimum thickness 3mm
Minimum thickness 3mm
Radial copper plating layer at least 250
m, copper content 99.9%
Minimum thickness 3mm
Minimum diameter of each piece 1.7mm
Minimum thickness 2mm44
voltage limiting type SPD has high impedance when there is no surge, and the impedance decreases continuously with the increase of surge current and voltage. Varistors and suppression diodes are usually used as components of this type of SPD.
electronic systemelectronicsystem
A system composed of sensitive electronic components (such as communication systems, computers, control and instrumentation systems, radio systems, power electronic devices).
safe distancesafedistance
The distance between two conductors so that no dangerous spark discharge or electromagnetic radiation will endanger the safety of the equipment. 3.47
Rolling sphere method
A sphere with the rolling sphere radius as the radius rolls along the part that needs to be protected from direct lightning strikes: when the sphere only touches the lightning receptor (including metal objects used as lightning receptors), or only touches the lightning receptor and the lightning receptor and the ground (including metal objects in contact with the ground and capable of withstanding lightning strikes), but does not touch the part that needs to be protected, then the part is protected by the lightning receptor. 3.48
Short-circuited ring
Connect all the steel bars that need to be connected with a ring-shaped metal object. 349
QXT105
Location of the ground of the inspected building [horizontal distance from adjacent buildings in the four directions of east (E), south (S), west (W), and north (N) 4
General description
The contents of the construction quality supervision and acceptance of lightning protection devices in this standard include eight aspects, namely pile foundation, cap, ground beam, column reinforcement down conductor, equalizing ring, lightning protection grid lightning strip, lightning rod, equipotential and SPD, including 56 specific items in total, see the "Lightning Protection Device Construction Quality Supervision and Acceptance Manual" in Appendix A of this standard, and the filling and evaluation standards of the 56 items are shown in Appendix B of this standard. The comprehensive evaluation standards and methods for the construction quality supervision and acceptance of lightning protection devices are shown in Appendix C of this standard, and its comprehensive evaluation table and small project evaluation table are shown in Appendix D of this standard. 5
Grounding device
Material structure and minimum size of grounding device
The materials, structure and minimum size of the building as a lightning protection grounding device shall meet the requirements of Table 1 Table 1 #
Material structure and minimum size of grounding device Material
Stainless steel
Copper stranded wire
Single round copper
Single flat copper
Single round copper
Whole copper plate
Single round steel
Hot-dip galvanized steel pipe
Hot-dip galvanized Flat steel
Hot-dip galvanized steel plate
Hot-dip copper round steel
Bare round steel
Bare flat steel
Hot-dip galvanized steel strand
Hot-dip galvanized angle steel
Circular conductor
Flat conductor
Vertical grounding device
Diameter 15mm
Diameter 20mm
Diameter 16mm
Diameter 25mm
Diameter 14mm
50mm×50mm×3mm||t t||16mm in diameter
Test of grounding resistance value of grounding device
Minimum size
Horizontal grounding device
10mm in diameter
10mm in diameter
10mm in diameter
The test of grounding resistance value of grounding device shall meet the requirements of Appendix E of this standard, and the grounding resistance value of grounding device shall meet the requirements of Table 2 Grounding plate
500mm×500mm
500mmX500mm
Minimum per share Diameter 1.7mm
Diameter 8mm
Minimum thickness 2mm
Minimum wall thickness 2mm
Minimum thickness 2mm
Hot-dip galvanizing
Minimum wall thickness 2mm
Minimum thickness 3mm
Minimum thickness 3mm
Radial copper plating layer at least 250
m, copper content 99.9%
Minimum thickness 3mm
Minimum diameter of each piece 1.7mm
Minimum thickness 2mm
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