| 安装在用户住处的电信设备的耐过电压和过电流的能力 |
ITU-T K.21建议书规定了连接或安装在用户房屋内的电信设备的电阻要求和测试程序。
本建议书涵盖的过压或过流，包括线路设备上或附近的闪电引起的电涌、相邻交流（a.c.）电力线或铁路系统的短期感应、电源故障引起的地电位升高、电信线路和电力线之间的直接接触以及静电放电（ESD）。产生内部线路过压的主要原因是，附近雷击传导的雷电流或附近导体传导的雷电流引起的感应耦合。 |
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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. 15 (09/2018)
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ITU-T K.20, K.21 and K.44 – Internal DC powering interface surge testing factors
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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. 21 (05/2021)
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ITU-T K.21 – Rationale for setting resistibility requirements of telecommunication equipment installed in customer premises against lightning
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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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K Suppl. 32 (06/2023)
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Case studies of radio frequency- electromagnetic field (RF-EMF) assessment
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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 |
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Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45
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2023-11-22
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here
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Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45
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2012-04-19
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here
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| Title |
Approved on |
Download |
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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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