GB/T 21714.1-2015 English PDFUS$1094.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21714.1-2015: Protection against lightning -- Part 1: General principles Status: Valid GB/T 21714.1: Historical versions
Basic dataStandard ID: GB/T 21714.1-2015 (GB/T21714.1-2015)Description (Translated English): Protection against lightning -- Part 1: General principles Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K09 Classification of International Standard: 13.260 Word Count Estimation: 55,537 Date of Issue: 2015-09-11 Date of Implementation: 2016-04-01 Older Standard (superseded by this standard): GB/T 21714.1-2008 Quoted Standard: GB/T 21714.2-2015; GB/T 21714.3-2015; GB/T 21714.4-2015 Adopted Standard: IEC 62305-1-2010, IDT Regulation (derived from): National Standard Announcement 2015 No.25 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Standard specifies the building (including facilities, personnel and internal objects) Lightning general principles to be followed. The following does not belong to the scope of this standard: railway system; vehicles, ships, aircraft, offshore installations; underground high pressure pipelines; disposed outside the building pipelines, power lines and communication lines. GB/T 21714.1-2015: Protection against lightning -- Part 1: General principles---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.(Lightning protection - Part 1. General) ICS 13.260 K09 National Standards of People's Republic of China Replacing GB/T 21714.1-2008 Lightning protection - Part 1. General Protectionagainstlightning-Part 1. Generalprinciples (IEC 62305-1.2010, IDT) Issued on. 2015-09-11 2016-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsIntroduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 lightning current parameters 6 5 lightning damage 7 6 Lightning necessity and economic rationality 10 7 protective measures 11 The basic criterion 8 Building Lightning Protection 12 Appendix A (Informative Appendix) lightning current parameters 18 Lightning current time Annex B (informative) for the analysis of function 26 Lightning current Annex C (informative) for testing analog 31 Test parameters Annex D (informative) simulate the impact of lightning on LPS components 34 Lightning Surge Appendix E (normative) different installation point 45 References 49 FIG. 1 GB/T 21714 Ⅳ relationship of each part Type 2 losses and risks of different types of damages arising FIG. 10 Figure 3 LPS determined LPZ (GB/T 21714.3-2015) 15 Figure 4 SPM determined LPZ (GB/T 21714.4-2015) 16 Figure A.1 impact of the current definition of the parameters (typ T2 < 2ms) 18 A.2 defined time (2ms typical values \u200b\u200bof lightning parameters Figure \u003cTLONG\u003c1s) 19 Figure A.3 downward lightning possible components (usually lightning on the ground and low-rise buildings) 19 Figure A.4 upward lightning might composition (usually for the exposure and/or high buildings lightning) 20 A.5 cumulative frequency distribution of lightning current parameters (probability value curve by 95% to 5%) 23 Figure B.1 first positive polarity short lightning current rising waveform 27 Figure B.2 first positive polarity falling short of lightning current waveform 27 Figure B.3 first negative short lightning current rising waveform 28 Figure B.4 first negative falling short of lightning current waveform 28 Figure B.5 negative short-term follow-up to the rising edge of the lightning current waveform 29 Figure B.6 negative short-term follow-up to the falling edge of the lightning current waveform 29 Figure B.7 LPLI parameters obtained by the lightning current amplitude-frequency density curve 30 Figure C.1 simulation first positive short and long-lightning lightning unit energy charge test generator 31 Figure C.2 Table C.3 defined lightning current steepness 33 Figure C.3 used to simulate the first big test of the short-term positive polarity lightning wave steepness test generator head 33 Figure C.4 for a large sample of simulated lightning subsequent negative short wave steepness test generator head 33 D.1 schematic diagram for calculating the two wires of electric power 39 Figure D.2 LPS conductors typical layout 39 Figure D.3 Figure D.2 Stress Stress 40 F Figure D.2 D.4 force F along the horizontal wire per unit length '40 Table 1 Effect of lightning on typical building 7 Table 2 points lead to lightning damage and loss of buildings 9 Table 3 LPL lightning current parameters corresponding to the maximum 13 Table 4 LPL lightning parameters and their corresponding minimum radius of 14 bowls 5 lightning current parameters of the upper and lower limits corresponding probability table 14 From Table A.1 CIGRE (ElectraNo41 or No69) [3,4] lightning current parameter values \u200b\u200b21 Table A.2 lightning current parameters of the lognormal distribution - from CIGRE (ElectraNo41 or No69) [3,4] the probability from 95% to 5% The value of lightning current parameters calculated mean μ and standard deviation σlg 22 Table A.3 probability P and the relationship between the lightning current I 23 Parameters Table B.1 formula (B.1) 26 Table C.1 first positive polarity short lightning test parameters 32 Table C.2 long lightning test parameters 32 Table C.3 short lightning test parameters 32 Lightning threat parameters Table D.1 calculate different LPS components and testing different values \u200b\u200bLPL under 34 should be considered Physical Characteristics Table D.2 LPS components commonly used materials 37 Table D.3 relationship cross-sectional area of \u200b\u200bthe conductor temperature rise with different W/R 37 Table-valued impulse grounding impedance Z and Z1 under E.1 different soil resistivity 46 Table E.2 low pressure system over-current surges due to lightning strikes expected value 47 Table E.3 communication system lightning-induced surge current over the expected value of 47ForewordGB/T 21714 "Lightning protection" consists of the following four components. --- Part 1. General; --- Part 2. Risk management; --- Part 3. Physical damage to structures and life-threatening; --- Part 4. Electrical and electronic systems in buildings. This section GB/T 21714 Part 1. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 21714.1-2008 "Lightning Protection Part 1. General", compared with the GB/T 21714.1-2008, the main To technical changes are as follows. --- Deleted the relevant parts of the original standard facilities (see the 2008 version 5.2,8.4); --- Lightning surge modified low-pressure system and communications systems over current expected value (see Table E.2, Table E.3); --- Protective measures to reduce failures of electrical and electronic systems added to the isolation interface (see 3.56,7.4); --- Increased the short-term negative for the first time lightning lightning current parameters (see Table 3); --- Unified modify some of the terms explained. This section uses the translation method is equivalent to using IEC 62305-1.2010 "Lightning Protection Part 1. General." Please note that some content of this document may involve patents, the issuing authority of this document does not assume responsibility for the identification of these patents. This part of the National Lightning Protection Standardization Technical Committee (SAC/TC258) and focal points. This section is responsible for drafting unit. Lightning Technology Co., Ltd. Sichuan light. It participated in the drafting of this section. Lightning Protection Center of Shanghai, Tianjin Force Lightning Protection Technology Co., Ltd. The main drafters of this section. Wang Yan, Zhang Hongwen, Huang Xiaohong, Zhou Qibin, Xuewen An, Gao Xin. The previous version of this part of the release of case. --- GB/T 21714.1-2008.IntroductionSo far there is no device and method capable of changing the nature of weather phenomena, in order to prevent the occurrence of lightning. Lightning hit the building or buildings Nearby (or hitting the lines connecting to the building) people, the building itself, its internal objects, devices, and lines are dangerous, and should therefore be Consider lightning protection measures. Choose whether the risk should be taken lightning protection measures, installed lightning protection lightning protection measures and appropriate economic measures Management determined. Risk management is described in GB/T 21714.2 in. Protective measures GB/T 21714 each section can be raised effectively reduce risk. All lightning protection measures constitute a comprehensive lightning protection system. From the practical considerations, lightning protection design, installation and maintenance of standards are divided into two section. Reducing physical damage within the building as well as human and animal injuries lightning protection measures in GB/T 21714.3 describes. Reduce lightning protection measures in the building electrical and electronic systems failure 21714.4 described in GB/T . GB/T 21714 relation of each part shown in Fig. FIG. 1 GB relations/T 21714 each part Lightning protection - Part 1. General1 ScopeThis section GB/T 21714 provides the building (including facilities, personnel and internal objects) lightning protection should follow the general in principle. The following does not belong to the scope of this section. --- Railway system; --- Vehicles, ships, aircraft, offshore installations; --- Underground high pressure pipelines; --- Set up outside the building of pipelines, power lines and communication lines. Note. Typically these systems by the professional norms of professional authority established jurisdiction.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 21714.2-2015 Lightning Part 2. Risk management (IEC 62305-2.2010, IDT) GB/T 21714.3-2015 Lightning Protection Part 3. Physical damage to structures and life hazard (IEC 62305-3.2010, IDT) GB/T 21714.4-2015 Lightning Part 4. Electrical and electronic systems within structures (IEC 62305-4.2010, IDT)3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Landmine flash lightningflashtoearth Atmospheric discharge between clouds ground by a lightning strike or a plurality of components. 3.2 Downward lightning downwardflash It began a pilot cloud to ground lightning downward. Note. The first consists of a downward lightning lightning constitutes a short, short time later may be followed by several subsequent lightning. After a short period of time or more lightning, but also To follow a long lightning. 3.3 Uplink lightning upwardflash It began building ground to a cloud of lightning upward leader. NOTE. Uplink lightning lightning consists of a first time, on which is superimposed or not superimposed multiple short lightning. After a short period of time or more lightning, but also It may be followed by a long lightning. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21714.1-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 21714.1-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 21714.1-2015_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21714.1-2015_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 21714.1-2015?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21714.1-2015 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
