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ITU-T K.45 (11/2011)

Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents

Recommendation ITU-T K.45 specifies resistibility requirements and test procedures for telecommunication equipment installed between telecommunication centres and between a telecommunication centre and the customer's premises.

Overvoltages or overcurrents covered by this Recommendation include surges due to lightning on or near the line plant, short-term induction from adjacent a.c. power lines or railway systems, earth potential rise due to power faults, direct contact between telecommunication lines and power lines and electrostatic discharges.

Major changes compared with the 2008 version of this Recommendation include:
• updating the references;
• informing when to add protection to untested ports;
• adding test requirements for external coaxial cable ports.

Citation:	https://handle.itu.int/11.1002/1000/11423
Series title:	K series: Protection against interference
Approval date:	2011-11-13
Provisional name:	K.ran
Approval process:	AAP
Status:	Superseded
Maintenance responsibility:	ITU-T Study Group 5
Further details:	Patent statement(s) Development history [8 related work items in progress]

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
11	K.45 (11/2022)	In force	here	here	here
10.1	K.45 (2019) Amd. 1 (06/2020)	Superseded	here	here	here
10	K.45 (10/2019)	Superseded	here	here	here
9	K.45 (07/2018)	Superseded	here	here	here
8	K.45 (07/2017)	Superseded	here	here	here
7	K.45 (12/2016)	Superseded	here	here	here
6	K.45 (06/2016)	Superseded	here	here	here
5	K.45 (04/2015)	Superseded	here	here	here
4	K.45 (11/2011)	Superseded	here	here	here
3	K.45 (04/2008)	Superseded	here	here	here
2	K.45 (07/2003)	Superseded	here	here	here
1	K.45 (02/2000)	Superseded	here	here	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
K Suppl. 3 (10/2015)	ITU-T K.20, K.21, K.45, K.82 – Additional criteria to protect telecommunication cabling during a power cross event	In force	here	here	here
K Suppl. 8 (11/2017)	Resistibility analysis of 5G systems	In force	here	here	here
K Suppl. 9 (05/2019)	5G technology and human exposure to radiofrequency electromagnetic fields	In force	here	here	here
K Suppl. 10 (11/2017)	Analysis of electromagnetic compatibility aspects and definition of requirements for 5G mobile systems	In force	here	here	here
K Suppl. 13 (12/2021)	Radiofrequency electromagnetic field (RF-EMF) exposure levels from mobile and portable devices during different conditions of use	In force	here	here	here
K Suppl. 14 (09/2019)	The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment	In force	here	here	here
K Suppl. 16 (10/2022)	Electromagnetic field compliance assessments for 5G wireless networks	In force	here	here	here
K Suppl. 19 (09/2019)	Electromagnetic field (EMF) strength inside underground railway trains	In force	here	here	here
K Suppl. 22 (05/2021)	ITU-T K.45 – Rationale for setting resistibility requirements of telecommunication equipment installed in the access and trunk networks against lightning	In force	here	here	here
K Suppl. 29 (07/2022)	Electromagnetic field strength inside and outside of electric vehicles using wireless power transfer technology	In force	here	here	here
K Suppl. 32 (06/2023)	Case studies of radio frequency- electromagnetic field (RF-EMF) assessment	In force	here	here	here

Title	Approved on	Download
Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45	2023-11-22
Guide on the use of the overvoltage resistibility for Recommendations ITU-T K.20, K.21 and K.45	2012-04-19	here

Title	Approved on	Download
Mitigation measures for telecommunication installations – Chapter 10	2006	here
Mitigation measures for telecommunication installations	2004	here
Earthing and bonding	2003	here
Guide to the use of ITU-T Publications produced by Study Group 5 aimed at achieving Electromagnetic Compatibility and Safety	2002	here
Earthing of telecommunication installations	1976	here

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ITU-T Recommendations

ITU-T K.45 (11/2011)