电信塔周边防雷击保护 |
本建议书涉及电信塔(包括塔和杆)免受闪电直接破坏和影响,甚或人员伤亡问题。建议书所述评估和保护措施旨在降低建造塔杆可能带来的风险,但不能改善其周围每个建筑的总体雷电保护。 本建议书考虑的电信塔的高度一般距地面不足100米(很难满足上行闪电的初始条件),因此,电信塔的存在不能对闪电情况产生很大影响。 根据对一单一周围建筑破坏源的分析(参引到[IEC62305-2]),主要风险的构成是,由于大地电位上升(EPR)对邻近电信塔的影响和通过共用电力馈线传送的瞬间电流。在前一种风险方面,考虑了火花的出现和对生物体的伤害。在后一种风险方面,提出了一系列免除标准和相应保护(缓解)措施。此外,还介绍了有关实施保护措施的要求。 |
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Ed. |
ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
1
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K.111 (11/2015)
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In force
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here
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here
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here
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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K Suppl. 3 (10/2015)
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ITU-T K.20, K.21, K.45, K.82 – Additional criteria to protect telecommunication cabling during a power cross event
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In force
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here
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here
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here
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K Suppl. 8 (11/2017)
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Resistibility analysis of 5G systems
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In force
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here
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here
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here
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K Suppl. 9 (05/2019)
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5G technology and human exposure to radiofrequency electromagnetic fields
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In force
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here
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here
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here
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K Suppl. 10 (11/2017)
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Analysis of electromagnetic compatibility aspects and definition of requirements for 5G mobile systems
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In force
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here
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here
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here
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K Suppl. 13 (12/2021)
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Radiofrequency electromagnetic field (RF-EMF) exposure levels from mobile and portable devices during different conditions of use
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In force
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here
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here
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here
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K Suppl. 14 (09/2019)
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The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment
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In force
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here
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here
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here
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K Suppl. 16 (10/2022)
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Electromagnetic field compliance assessments for 5G wireless networks
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In force
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here
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here
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here
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K Suppl. 19 (09/2019)
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Electromagnetic field (EMF) strength inside underground railway trains
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In force
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here
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here
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here
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K Suppl. 29 (07/2022)
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Electromagnetic field strength inside and outside of electric vehicles using wireless power transfer technology
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In force
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here
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here
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here
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Title |
Approved on |
Download |
Mitigation measures for telecommunication installations – Chapter 10
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2006
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here
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Mitigation measures for telecommunication installations
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2004
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here
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Earthing and bonding
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2003
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here
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Guide to the use of ITU-T Publications produced by Study Group 5 aimed at achieving Electromagnetic Compatibility and Safety
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2002
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here
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Earthing of telecommunication installations
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1976
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here
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