| Protection of customer premises from overvoltages |
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This Recommendation:
• provides recommendations for bonding and earthing of telecommunication equipment in residential and commercial customer premises;
• refers to ITU-T Rec. K.21 for equipment resistibility requirements;
• recommends earthing and bonding requirements to coordinate with the resistibility requirements of ITU-T Rec. K.21 and the safety requirements of IEC 60950-1;
• recommends the installation practices for bonding of all services and the installation of SPDs;
• illustrates problems associated with earthing and bonding and provides solutions for these earthing and bonding problems. These include:1) methods to improve the earthing and bonding;2) methods of providing additional protection external to the equipment;3) special resistibility and safety requirements;
• recommends responsibilities for protection at customer premises;
• refers to draft IEC 62305-3 for protection against direct lightning. |
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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. 5 (04/2016)
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ITU-T K.81 - Estimation examples of the high-power electromagnetic threat and vulnerability for telecommunication 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. 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 (11/2017)
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5G technology and human exposure to RF EMF
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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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