雷电保护的屏蔽因子 |
ITU-T K.101建议书中包含ITU T K.46、ITU-T K.47、ITU-T K.56和 ITU-T K.97建议书中使用的屏蔽因子的计算方法、包括:1) 提出上述建议书中屏蔽因子近似公式及近似值的基本原理; 2) 使用本建议书提供的公式可以更精确地计算屏蔽因子。 本建议书中的屏蔽因子指的是: • 根据ITU T K.56 和 ITU-T K.97建议书,通信塔(αT)中的雷电流分布; • 根据ITU T K.56 和 ITU-T K.97建议书,位于爬线梯中导体即馈线盘(αF)内的的雷电流分布; • 根据ITU T K.56建议书,由电缆槽(β)产生; • 根据 ITU T K.47建议书,平行导体(η); • 根据ITU T K.46建议书,通信电缆接地线产生的折射(δ); • 根据ITU T K.46建议书,由带有金属套管(保护)的通信电缆(η)产生。 |
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ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
1
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K.101 (12/2014)
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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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