曾工致力于各类电子电器产品的国际国内认证、EMC整改，欢迎各位询价，提供专业服务，解决客户痛点！专治各种产品不合格！
电话：139 2899 3907 邮箱：info@emc.wiki
“K.21”的版本间差异
来自认证百科
（创建页面，内容为“==ITU-T : Publications : Recommendations : K Series== K.1 [Withdrawn] Connection to earth of an audio-frequency telephone line in cable Deleted after its content b…”） |
|||
| 第1行： | 第1行： | ||
==ITU-T : Publications : Recommendations : K Series== | ==ITU-T : Publications : Recommendations : K Series== | ||
K.1 | * K.1 | ||
[Withdrawn] Connection to earth of an audio-frequency telephone line in cable | * [Withdrawn] Connection to earth of an audio-frequency telephone line in cable | ||
Deleted after its content became technically out of date | * Deleted after its content became technically out of date | ||
K.2 | * K.2 | ||
[Withdrawn] Protection of repeater power-feeding systems against interference from neighbouring electricity lines | * [Withdrawn] Protection of repeater power-feeding systems against interference from neighbouring electricity lines | ||
Deleted after its content became technically out of date | * Deleted after its content became technically out of date | ||
K.3 | * K.3 | ||
[Withdrawn] Interference caused by audio-frequency signals injected into a power distribution network | * [Withdrawn] Interference caused by audio-frequency signals injected into a power distribution network | ||
Deleted after its content became technically out of date | * Deleted after its content became technically out of date | ||
K.4 | * K.4 | ||
[Withdrawn] Disturbance to signalling | * [Withdrawn] Disturbance to signalling | ||
Deleted after its content became technically out of date | * Deleted after its content became technically out of date | ||
K.5 | * K.5 | ||
Joint use of poles for electricity distribution and for telecommunications | * Joint use of poles for electricity distribution and for telecommunications | ||
K.6 | * K.6 | ||
Precautions at crossings | * Precautions at crossings | ||
K.7 | * K.7 | ||
Protection against acoustic shock | * Protection against acoustic shock | ||
K.8 | * K.8 | ||
Separation in the soil between telecommunication cables and earthing system of power facilities | * Separation in the soil between telecommunication cables and earthing system of power facilities | ||
K.9 | * K.9 | ||
Protection of telecommunication staff and plant against a large earth potential due to a neighbouring electric traction line | * Protection of telecommunication staff and plant against a large earth potential due to a neighbouring electric traction line | ||
K.10 | * K.10 | ||
Low frequency interference due to unbalance about earth of telecommunication equipment | * Low frequency interference due to unbalance about earth of telecommunication equipment | ||
K.11 | * K.11 | ||
Principles of protection against overvoltages and overcurrents | * Principles of protection against overvoltages and overcurrents | ||
K.12 | * K.12 | ||
Characteristics of gas discharge tubes for the protection of telecommunications installations | * Characteristics of gas discharge tubes for the protection of telecommunications installations | ||
K.13 | * K.13 | ||
Induced voltages in cables with plastic-insulated conductors | * Induced voltages in cables with plastic-insulated conductors | ||
K.14 | * K.14 | ||
Provision of a metallic screen in plastic-sheathed cables | * Provision of a metallic screen in plastic-sheathed cables | ||
K.15 | * K.15 | ||
[Withdrawn] Protection of remote-feeding systems and line repeaters against lightning and interference from neighbouring electricity lines | * [Withdrawn] Protection of remote-feeding systems and line repeaters against lightning and interference from neighbouring electricity lines | ||
K.16 | * K.16 | ||
[Withdrawn] Simplified calculation method for estimating the effect of magnetic induction from power lines on remote-fed repeaters in coaxial pair telecommunication systems | * [Withdrawn] Simplified calculation method for estimating the effect of magnetic induction from power lines on remote-fed repeaters in coaxial pair telecommunication systems | ||
Rec. K.16 was withdrawn because it deals only with calculation methods contained in the "Directives - Volume II: Calculating induced voltages and currents in practical cases" without giving any limit | * Rec. K.16 was withdrawn because it deals only with calculation methods contained in the "Directives - Volume II: Calculating induced voltages and currents in practical cases" without giving any limit | ||
K.17 | * K.17 | ||
[Withdrawn] Tests on power-fed repeaters using solid-state devices in order to check the arrangements for protection from external interference | * [Withdrawn] Tests on power-fed repeaters using solid-state devices in order to check the arrangements for protection from external interference | ||
K.18 | * K.18 | ||
Calculation of voltage induced into telecommunication lines from radio station broadcasts and methods of reducing interference | * Calculation of voltage induced into telecommunication lines from radio station broadcasts and methods of reducing interference | ||
K.19 | * K.19 | ||
Joint use of trenches and tunnels for telecommunication and power cables | * Joint use of trenches and tunnels for telecommunication and power cables | ||
K.20 | * K.20 | ||
Resistibility of telecommunication equipment installed in a telecommunication centre to overvoltages and overcurrents | * Resistibility of telecommunication equipment installed in a telecommunication centre to overvoltages and overcurrents | ||
K.21 | * K.21 | ||
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents | * Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents | ||
K.22 | * K.22 | ||
[Withdrawn] Overvoltage resistibility of equipment connected to an ISDN T/S bus | * [Withdrawn] Overvoltage resistibility of equipment connected to an ISDN T/S bus | ||
K.23 | * K.23 | ||
Types of induced noise and description of noise voltage parameters for ISDN basic user networks | * Types of induced noise and description of noise voltage parameters for ISDN basic user networks | ||
K.24 | * K.24 | ||
Method for measuring radio-frequency induced noise on telecommunications pairs | * Method for measuring radio-frequency induced noise on telecommunications pairs | ||
K.25 | * K.25 | ||
[Withdrawn] Protection of optical fibre cables | * [Withdrawn] Protection of optical fibre cables | ||
This Recommendation was deleted on 2013-01-25 since its requirements have been incoroporated in revised Rec ITU-T K.47 (05/2012) | * This Recommendation was deleted on 2013-01-25 since its requirements have been incoroporated in revised Rec ITU-T K.47 (05/2012) | ||
K.26 | * K.26 | ||
Protection of telecommunication lines against harmful effects from electric power and electrified railway lines | * Protection of telecommunication lines against harmful effects from electric power and electrified railway lines | ||
K.27 | * K.27 | ||
Bonding configurations and earthing inside a telecommunication building | * Bonding configurations and earthing inside a telecommunication building | ||
K.28 | * K.28 | ||
Parameters of thyristor-based surge protective devices for the protection of telecommunication installations | * Parameters of thyristor-based surge protective devices for the protection of telecommunication installations | ||
K.29 | * K.29 | ||
Coordinated protection schemes for telecommunication cables below ground | * Coordinated protection schemes for telecommunication cables below ground | ||
K.30 | * K.30 | ||
[Withdrawn] Self-restoring overcurrent protectors | * [Withdrawn] Self-restoring overcurrent protectors | ||
K.31 | * K.31 | ||
[Withdrawn] Bonding configurations and earthing of telecommunication installations inside a subscriber's building | * [Withdrawn] Bonding configurations and earthing of telecommunication installations inside a subscriber's building | ||
ITU-T K.31 was deleted on 2008-08-09 after the incorporation of the relevant part of this Recommendation in ITU-T K.73 (2008) | * ITU-T K.31 was deleted on 2008-08-09 after the incorporation of the relevant part of this Recommendation in ITU-T K.73 (2008) | ||
K.32 | * K.32 | ||
[Withdrawn] Immunity requirements and test methods for electrostatic discharge to telecommunication equipment - Generic EMC Recommendation | * [Withdrawn] Immunity requirements and test methods for electrostatic discharge to telecommunication equipment - Generic EMC Recommendation | ||
The content of this Recommendation has been superseded by ITU-T K.43 (1998) and K.48 (2000) | * The content of this Recommendation has been superseded by ITU-T K.43 (1998) and K.48 (2000) | ||
K.33 | * K.33 | ||
[Withdrawn] Limits for people safety related to coupling into telecommunications system from a.c. electric power and a.c. electrified railway installations in fault conditions | * [Withdrawn] Limits for people safety related to coupling into telecommunications system from a.c. electric power and a.c. electrified railway installations in fault conditions | ||
ITU-T K.33 was deleted on 2008-08-09 after the incorporation of the relevant information contained in this Recommendation into the revised the Directives Volume VI (2008) | * ITU-T K.33 was deleted on 2008-08-09 after the incorporation of the relevant information contained in this Recommendation into the revised the Directives Volume VI (2008) | ||
K.34 | * K.34 | ||
Classification of electromagnetic environmental conditions for telecommunication equipment - Basic EMC Recommendation | * Classification of electromagnetic environmental conditions for telecommunication equipment - Basic EMC Recommendation | ||
K.35 | * K.35 | ||
Bonding configurations and earthing at remote electronic sites | * Bonding configurations and earthing at remote electronic sites | ||
K.36 | * K.36 | ||
Selection of protective devices | * Selection of protective devices | ||
K.37 | * K.37 | ||
Low and high frequency EMC mitigation techniques for telecommunication installations and systems - Basic EMC Recommendation | * Low and high frequency EMC mitigation techniques for telecommunication installations and systems - Basic EMC Recommendation | ||
K.38 | * K.38 | ||
Radiated emission test procedure for physically large systems | * Radiated emission test procedure for physically large systems | ||
K.39 | * K.39 | ||
Risk assessment of damages to telecommunication sites due to lightning discharges | * Risk assessment of damages to telecommunication sites due to lightning discharges | ||
K.40 | * K.40 | ||
Protection against LEMP in telecommunications centres | * Protection against LEMP in telecommunications centres | ||
K.41 | * K.41 | ||
[Withdrawn] Resistibility of internal interfaces of telecommunication centres to surge overvoltages | * [Withdrawn] Resistibility of internal interfaces of telecommunication centres to surge overvoltages | ||
K.42 | * K.42 | ||
Preparation of emission and immunity requirements for telecommunication equipment - General principles | * Preparation of emission and immunity requirements for telecommunication equipment - General principles | ||
K.43 | * K.43 | ||
Immunity requirements for telecommunication network equipment | * Immunity requirements for telecommunication network equipment | ||
K.44 | * K.44 | ||
Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation | * Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation | ||
K.Imp44 | * K.Imp44 | ||
Implementors' Guide for Recommendation ITU-T K.44 | * Implementors' Guide for Recommendation ITU-T K.44 | ||
K.45 | * K.45 | ||
Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | * Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents | ||
K.46 | * K.46 | ||
Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges | * Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges | ||
K.47 | * K.47 | ||
Protection of telecommunication lines against direct lightning flashes | * Protection of telecommunication lines against direct lightning flashes | ||
K.48 | * K.48 | ||
EMC requirements for telecommunication equipment - Product family Recommendation | * EMC requirements for telecommunication equipment - Product family Recommendation | ||
K.49 | * K.49 | ||
Test requirements and performance criteria for voice terminal telephones subject to disturbance from digital mobile telecommunications systems | * Test requirements and performance criteria for voice terminal telephones subject to disturbance from digital mobile telecommunications systems | ||
K.50 | * K.50 | ||
Safe limits of operating voltages and currents for telecommunication systems powered over the network | * Safe limits of operating voltages and currents for telecommunication systems powered over the network | ||
K.51 | * K.51 | ||
Safety criteria for telecommunication equipment | * Safety criteria for telecommunication equipment | ||
K.52 | * K.52 | ||
Guidance on complying with limits for human exposure to electromagnetic fields | * Guidance on complying with limits for human exposure to electromagnetic fields | ||
K.53 | * K.53 | ||
[Withdrawn] Values of induced voltages on telecommunication installations to establish telecom and a.c. power and railway operators responsibilities | * [Withdrawn] Values of induced voltages on telecommunication installations to establish telecom and a.c. power and railway operators responsibilities | ||
ITU-T K.53 was deleted on 2008-08-09 after the incorporation of the relevant information of this Recommendation in ITU-T K.68 (2008) | * ITU-T K.53 was deleted on 2008-08-09 after the incorporation of the relevant information of this Recommendation in ITU-T K.68 (2008) | ||
K.54 | * K.54 | ||
Conducted immunity test method and level at fundamental power frequencies | * Conducted immunity test method and level at fundamental power frequencies | ||
El título español fue cambiado por un erratum el 09/08/2002 | * El título español fue cambiado por un erratum el 09/08/2002 | ||
K.55 | * K.55 | ||
Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminations | * Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminations | ||
K.56 | * K.56 | ||
Protection of radio base stations against lightning discharges | * Protection of radio base stations against lightning discharges | ||
K.57 | * K.57 | ||
Protection measures for radio base stations sited on power line towers | * Protection measures for radio base stations sited on power line towers | ||
K.58 | * K.58 | ||
EMC, resistibility and safety requirements and guidance for determining responsibility under co-located information and communication technology installations | * EMC, resistibility and safety requirements and guidance for determining responsibility under co-located information and communication technology installations | ||
K.59 | * K.59 | ||
EMC, resistibility and safety requirements and procedures for connection to unbundled cables | * EMC, resistibility and safety requirements and procedures for connection to unbundled cables | ||
K.60 | * K.60 | ||
Emission levels and test methods for wireline telecommunication networks to minimize electromagnetic disturbance of radio services | * Emission levels and test methods for wireline telecommunication networks to minimize electromagnetic disturbance of radio services | ||
K.61 | * K.61 | ||
Guidance on measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations | * Guidance on measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations | ||
K.62 | * K.62 | ||
System level radiated emissions compliance using mathematical modelling | * System level radiated emissions compliance using mathematical modelling | ||
K.63 | * K.63 | ||
Maintaining the suitability of production telecommunications equipment to its intended electromagnetic environment | * Maintaining the suitability of production telecommunications equipment to its intended electromagnetic environment | ||
K.64 | * K.64 | ||
Safe working practices for outside equipment installed in particular environments | * Safe working practices for outside equipment installed in particular environments | ||
K.65 | * K.65 | ||
Overvoltage and overcurrent requirements for termination modules with contacts for test ports or surge protective devices | * Overvoltage and overcurrent requirements for termination modules with contacts for test ports or surge protective devices | ||
K.66 | * K.66 | ||
Protection of customer premises from overvoltages | * Protection of customer premises from overvoltages | ||
K.67 | * K.67 | ||
Expected surges on telecommunications and signalling networks due to lightning | * Expected surges on telecommunications and signalling networks due to lightning | ||
K.68 | * K.68 | ||
Operator responsibilities in the management of electromagnetic interference by power systems on telecommunication systems | * Operator responsibilities in the management of electromagnetic interference by power systems on telecommunication systems | ||
K.69 | * K.69 | ||
Maintenance of protective measures | * Maintenance of protective measures | ||
K.70 | * K.70 | ||
Mitigation techniques to limit human exposure to EMFs in the vicinity of radiocommunication stations | * Mitigation techniques to limit human exposure to EMFs in the vicinity of radiocommunication stations | ||
K.71 | * K.71 | ||
Protection of customer antenna installations | * Protection of customer antenna installations | ||
K.72 | * K.72 | ||
Protection of telecommunication lines using metallic conductors against lightning - Risk management | * Protection of telecommunication lines using metallic conductors against lightning - Risk management | ||
K.73 | * K.73 | ||
Shielding and bonding for cables between buildings | * Shielding and bonding for cables between buildings | ||
K.74 | * K.74 | ||
Electromagnetic compatibility, resistibility and safety requirements for home network devices | * Electromagnetic compatibility, resistibility and safety requirements for home network devices | ||
K.75 | * K.75 | ||
Classification of interface for application of standards on resistibility and safety of telecommunication equipment | * Classification of interface for application of standards on resistibility and safety of telecommunication equipment | ||
K.76 | * K.76 | ||
EMC requirements for telecommunication network equipment (9 kHz-150 kHz) | * EMC requirements for telecommunication network equipment (9 kHz-150 kHz) | ||
K.77 | * K.77 | ||
Characteristics of metal oxide varistors for the protection of telecommunication installations | * Characteristics of metal oxide varistors for the protection of telecommunication installations | ||
K.78 | * K.78 | ||
High altitude electromagnetic pulse immunity guide for telecommunication centres | * High altitude electromagnetic pulse immunity guide for telecommunication centres | ||
K.79 | * K.79 | ||
Electromagnetic characterization of the radiated environment in the 2.4 GHz ISM band | * Electromagnetic characterization of the radiated environment in the 2.4 GHz ISM band | ||
K.80 | * K.80 | ||
EMC requirements for telecommunication network equipment (1 GHz - 6 GHz) | * EMC requirements for telecommunication network equipment (1 GHz - 6 GHz) | ||
K.81 | * K.81 | ||
High-power electromagnetic immunity guide for telecommunication systems | * High-power electromagnetic immunity guide for telecommunication systems | ||
K.82 | * K.82 | ||
Characteristics and ratings of solid-state, self-restoring overcurrent protectors for the protection of telecommunications installations | * Characteristics and ratings of solid-state, self-restoring overcurrent protectors for the protection of telecommunications installations | ||
K.83 | * K.83 | ||
Monitoring of electromagnetic field levels | * Monitoring of electromagnetic field levels | ||
K.84 | * K.84 | ||
Test methods and guide against information leaks through unintentional electromagnetic emissions | * Test methods and guide against information leaks through unintentional electromagnetic emissions | ||
K.85 | * K.85 | ||
Requirements for the mitigation of lightning effects on home networks installed in customer premises | * Requirements for the mitigation of lightning effects on home networks installed in customer premises | ||
K.86 | * K.86 | ||
Method for measuring longitudinal conversion loss (9 kHz - 30 MHz) | * Method for measuring longitudinal conversion loss (9 kHz - 30 MHz) | ||
K.87 | * K.87 | ||
Guide for the application of electromagnetic security requirements - Overview | * Guide for the application of electromagnetic security requirements - Overview | ||
K.88 | * K.88 | ||
EMC requirements for next generation network equipment | * EMC requirements for next generation network equipment | ||
K.89 | * K.89 | ||
Protection of persons inside a structure using telecommunication services provided by metallic conductors against lightning - Risk management | * Protection of persons inside a structure using telecommunication services provided by metallic conductors against lightning - Risk management | ||
K.90 | * K.90 | ||
Evaluation techniques and working procedures for compliance with exposure limits of network operator personnel to power-frequency electromagnetic fields | * Evaluation techniques and working procedures for compliance with exposure limits of network operator personnel to power-frequency electromagnetic fields | ||
K.91 | * K.91 | ||
Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | * Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields | ||
K.92 | * K.92 | ||
Conducted and radiated electromagnetic environment in home networking | * Conducted and radiated electromagnetic environment in home networking | ||
K.93 | * K.93 | ||
Immunity of home network devices to electromagnetic disturbances | * Immunity of home network devices to electromagnetic disturbances | ||
K.94 | * K.94 | ||
Mutual disturbance test method for evaluating performance degradation of converged terminal devices | * Mutual disturbance test method for evaluating performance degradation of converged terminal devices | ||
K.95 | * K.95 | ||
Surge parameters of isolating transformers used in telecommunication devices and equipment | * Surge parameters of isolating transformers used in telecommunication devices and equipment | ||
K.96 | * K.96 | ||
Surge protective components: Overview of surge mitigation functions and technologies | * Surge protective components: Overview of surge mitigation functions and technologies | ||
K.97 | * K.97 | ||
Lightning protection of distributed base stations | * Lightning protection of distributed base stations | ||
K.98 | * K.98 | ||
Overvoltage protection guide for telecommunication equipment installed in customer premises | * Overvoltage protection guide for telecommunication equipment installed in customer premises | ||
K.99 | * K.99 | ||
Surge protective component application guide - Gas discharge tubes | * Surge protective component application guide - Gas discharge tubes | ||
K.100 | * K.100 | ||
Measurement of radio frequency electromagnetic fields to determine compliance with human exposure limits when a base station is put into service | * Measurement of radio frequency electromagnetic fields to determine compliance with human exposure limits when a base station is put into service | ||
K.101 | * K.101 | ||
Shielding factors for lightning protection | * Shielding factors for lightning protection | ||
K.102 | * K.102 | ||
Parameters of fixed-voltage thyristor overvoltage protector components used for the protection of telecommunication installations | * Parameters of fixed-voltage thyristor overvoltage protector components used for the protection of telecommunication installations | ||
K.103 | * K.103 | ||
Surge protective component application guide - Silicon PN junction components | * Surge protective component application guide - Silicon PN junction components | ||
K.104 | * K.104 | ||
Method for identifying the transfer potential of the earth potential rise from high or medium voltage networks to the earthing system or neutral of low voltage networks | * Method for identifying the transfer potential of the earth potential rise from high or medium voltage networks to the earthing system or neutral of low voltage networks | ||
K.105 | * K.105 | ||
Lightning protection of photovoltaic power supply systems feeding radio base stations | * Lightning protection of photovoltaic power supply systems feeding radio base stations | ||
K.106 | * K.106 | ||
Techniques to mitigate interference between radio devices and cable or equipment connected to wired broadband networks and cable television networks | * Techniques to mitigate interference between radio devices and cable or equipment connected to wired broadband networks and cable television networks | ||
K.107 | * K.107 | ||
Method for determining the impedance to earth of earthing systems | * Method for determining the impedance to earth of earthing systems | ||
K.108 | * K.108 | ||
Joint use of poles by telecommunication and solidly earthed power lines | * Joint use of poles by telecommunication and solidly earthed power lines | ||
K.109 | * K.109 | ||
Installation of telecommunication equipment on utility poles | * Installation of telecommunication equipment on utility poles | ||
K.110 | * K.110 | ||
Lightning protection of the dedicated transformer for radio base station | * Lightning protection of the dedicated transformer for radio base station | ||
K.111 | * K.111 | ||
Protection of surrounding structures of telecommunication towers against lightning | * Protection of surrounding structures of telecommunication towers against lightning | ||
K.112 | * K.112 | ||
Lightning protection, earthing and bonding: practical procedures for radio base station | * Lightning protection, earthing and bonding: practical procedures for radio base station | ||
K.113 | * K.113 | ||
Generation of radiofrequency electromagnetic fields (RF-EMF) level maps | * Generation of radiofrequency electromagnetic fields (RF-EMF) level maps | ||
K.114 | * K.114 | ||
Electromagnetic compatibility requirements and measurement methods for digital cellular mobile communication base station equipment | * Electromagnetic compatibility requirements and measurement methods for digital cellular mobile communication base station equipment | ||
K.115 | * K.115 | ||
Mitigation methods against electromagnetic security threats | * Mitigation methods against electromagnetic security threats | ||
K.116 | * K.116 | ||
EMC requirements and test methods for radio telecommunication terminal equipment | * EMC requirements and test methods for radio telecommunication terminal equipment | ||
K.Sup1 | * K.Sup1 | ||
ITU-T K.91 - Guide on electromagnetic fields and health | * ITU-T K.91 - Guide on electromagnetic fields and health | ||
K.Sup2 | * K.Sup2 | ||
ITU-T K.52 - Calculator for equivalent isotropic radiated power as described in Recommendation ITU-T K.52 | * ITU-T K.52 - Calculator for equivalent isotropic radiated power as described in Recommendation ITU-T K.52 | ||
K.Sup3 | * K.Sup3 | ||
Additional criteria to protect telecommunication cabling during a power cross event | * Additional criteria to protect telecommunication cabling during a power cross event | ||
K.Sup4 | * K.Sup4 | ||
Electromagnetic field (EMF) considerations in smart sustainable cities | * Electromagnetic field (EMF) considerations in smart sustainable cities | ||
* | |||
2020年11月4日 (三) 18:56的版本
ITU-T : Publications : Recommendations : K Series
- K.1
- [Withdrawn] Connection to earth of an audio-frequency telephone line in cable
- Deleted after its content became technically out of date
- K.2
- [Withdrawn] Protection of repeater power-feeding systems against interference from neighbouring electricity lines
- Deleted after its content became technically out of date
- K.3
- [Withdrawn] Interference caused by audio-frequency signals injected into a power distribution network
- Deleted after its content became technically out of date
- K.4
- [Withdrawn] Disturbance to signalling
- Deleted after its content became technically out of date
- K.5
- Joint use of poles for electricity distribution and for telecommunications
- K.6
- Precautions at crossings
- K.7
- Protection against acoustic shock
- K.8
- Separation in the soil between telecommunication cables and earthing system of power facilities
- K.9
- Protection of telecommunication staff and plant against a large earth potential due to a neighbouring electric traction line
- K.10
- Low frequency interference due to unbalance about earth of telecommunication equipment
- K.11
- Principles of protection against overvoltages and overcurrents
- K.12
- Characteristics of gas discharge tubes for the protection of telecommunications installations
- K.13
- Induced voltages in cables with plastic-insulated conductors
- K.14
- Provision of a metallic screen in plastic-sheathed cables
- K.15
- [Withdrawn] Protection of remote-feeding systems and line repeaters against lightning and interference from neighbouring electricity lines
- K.16
- [Withdrawn] Simplified calculation method for estimating the effect of magnetic induction from power lines on remote-fed repeaters in coaxial pair telecommunication systems
- Rec. K.16 was withdrawn because it deals only with calculation methods contained in the "Directives - Volume II: Calculating induced voltages and currents in practical cases" without giving any limit
- K.17
- [Withdrawn] Tests on power-fed repeaters using solid-state devices in order to check the arrangements for protection from external interference
- K.18
- Calculation of voltage induced into telecommunication lines from radio station broadcasts and methods of reducing interference
- K.19
- Joint use of trenches and tunnels for telecommunication and power cables
- K.20
- Resistibility of telecommunication equipment installed in a telecommunication centre to overvoltages and overcurrents
- K.21
- Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
- K.22
- [Withdrawn] Overvoltage resistibility of equipment connected to an ISDN T/S bus
- K.23
- Types of induced noise and description of noise voltage parameters for ISDN basic user networks
- K.24
- Method for measuring radio-frequency induced noise on telecommunications pairs
- K.25
- [Withdrawn] Protection of optical fibre cables
- This Recommendation was deleted on 2013-01-25 since its requirements have been incoroporated in revised Rec ITU-T K.47 (05/2012)
- K.26
- Protection of telecommunication lines against harmful effects from electric power and electrified railway lines
- K.27
- Bonding configurations and earthing inside a telecommunication building
- K.28
- Parameters of thyristor-based surge protective devices for the protection of telecommunication installations
- K.29
- Coordinated protection schemes for telecommunication cables below ground
- K.30
- [Withdrawn] Self-restoring overcurrent protectors
- K.31
- [Withdrawn] Bonding configurations and earthing of telecommunication installations inside a subscriber's building
- ITU-T K.31 was deleted on 2008-08-09 after the incorporation of the relevant part of this Recommendation in ITU-T K.73 (2008)
- K.32
- [Withdrawn] Immunity requirements and test methods for electrostatic discharge to telecommunication equipment - Generic EMC Recommendation
- The content of this Recommendation has been superseded by ITU-T K.43 (1998) and K.48 (2000)
- K.33
- [Withdrawn] Limits for people safety related to coupling into telecommunications system from a.c. electric power and a.c. electrified railway installations in fault conditions
- ITU-T K.33 was deleted on 2008-08-09 after the incorporation of the relevant information contained in this Recommendation into the revised the Directives Volume VI (2008)
- K.34
- Classification of electromagnetic environmental conditions for telecommunication equipment - Basic EMC Recommendation
- K.35
- Bonding configurations and earthing at remote electronic sites
- K.36
- Selection of protective devices
- K.37
- Low and high frequency EMC mitigation techniques for telecommunication installations and systems - Basic EMC Recommendation
- K.38
- Radiated emission test procedure for physically large systems
- K.39
- Risk assessment of damages to telecommunication sites due to lightning discharges
- K.40
- Protection against LEMP in telecommunications centres
- K.41
- [Withdrawn] Resistibility of internal interfaces of telecommunication centres to surge overvoltages
- K.42
- Preparation of emission and immunity requirements for telecommunication equipment - General principles
- K.43
- Immunity requirements for telecommunication network equipment
- K.44
- Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation
- K.Imp44
- Implementors' Guide for Recommendation ITU-T K.44
- K.45
- Resistibility of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents
- K.46
- Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges
- K.47
- Protection of telecommunication lines against direct lightning flashes
- K.48
- EMC requirements for telecommunication equipment - Product family Recommendation
- K.49
- Test requirements and performance criteria for voice terminal telephones subject to disturbance from digital mobile telecommunications systems
- K.50
- Safe limits of operating voltages and currents for telecommunication systems powered over the network
- K.51
- Safety criteria for telecommunication equipment
- K.52
- Guidance on complying with limits for human exposure to electromagnetic fields
- K.53
- [Withdrawn] Values of induced voltages on telecommunication installations to establish telecom and a.c. power and railway operators responsibilities
- ITU-T K.53 was deleted on 2008-08-09 after the incorporation of the relevant information of this Recommendation in ITU-T K.68 (2008)
- K.54
- Conducted immunity test method and level at fundamental power frequencies
- El título español fue cambiado por un erratum el 09/08/2002
- K.55
- Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminations
- K.56
- Protection of radio base stations against lightning discharges
- K.57
- Protection measures for radio base stations sited on power line towers
- K.58
- EMC, resistibility and safety requirements and guidance for determining responsibility under co-located information and communication technology installations
- K.59
- EMC, resistibility and safety requirements and procedures for connection to unbundled cables
- K.60
- Emission levels and test methods for wireline telecommunication networks to minimize electromagnetic disturbance of radio services
- K.61
- Guidance on measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations
- K.62
- System level radiated emissions compliance using mathematical modelling
- K.63
- Maintaining the suitability of production telecommunications equipment to its intended electromagnetic environment
- K.64
- Safe working practices for outside equipment installed in particular environments
- K.65
- Overvoltage and overcurrent requirements for termination modules with contacts for test ports or surge protective devices
- K.66
- Protection of customer premises from overvoltages
- K.67
- Expected surges on telecommunications and signalling networks due to lightning
- K.68
- Operator responsibilities in the management of electromagnetic interference by power systems on telecommunication systems
- K.69
- Maintenance of protective measures
- K.70
- Mitigation techniques to limit human exposure to EMFs in the vicinity of radiocommunication stations
- K.71
- Protection of customer antenna installations
- K.72
- Protection of telecommunication lines using metallic conductors against lightning - Risk management
- K.73
- Shielding and bonding for cables between buildings
- K.74
- Electromagnetic compatibility, resistibility and safety requirements for home network devices
- K.75
- Classification of interface for application of standards on resistibility and safety of telecommunication equipment
- K.76
- EMC requirements for telecommunication network equipment (9 kHz-150 kHz)
- K.77
- Characteristics of metal oxide varistors for the protection of telecommunication installations
- K.78
- High altitude electromagnetic pulse immunity guide for telecommunication centres
- K.79
- Electromagnetic characterization of the radiated environment in the 2.4 GHz ISM band
- K.80
- EMC requirements for telecommunication network equipment (1 GHz - 6 GHz)
- K.81
- High-power electromagnetic immunity guide for telecommunication systems
- K.82
- Characteristics and ratings of solid-state, self-restoring overcurrent protectors for the protection of telecommunications installations
- K.83
- Monitoring of electromagnetic field levels
- K.84
- Test methods and guide against information leaks through unintentional electromagnetic emissions
- K.85
- Requirements for the mitigation of lightning effects on home networks installed in customer premises
- K.86
- Method for measuring longitudinal conversion loss (9 kHz - 30 MHz)
- K.87
- Guide for the application of electromagnetic security requirements - Overview
- K.88
- EMC requirements for next generation network equipment
- K.89
- Protection of persons inside a structure using telecommunication services provided by metallic conductors against lightning - Risk management
- K.90
- Evaluation techniques and working procedures for compliance with exposure limits of network operator personnel to power-frequency electromagnetic fields
- K.91
- Guidance for assessment, evaluation and monitoring of human exposure to radio frequency electromagnetic fields
- K.92
- Conducted and radiated electromagnetic environment in home networking
- K.93
- Immunity of home network devices to electromagnetic disturbances
- K.94
- Mutual disturbance test method for evaluating performance degradation of converged terminal devices
- K.95
- Surge parameters of isolating transformers used in telecommunication devices and equipment
- K.96
- Surge protective components: Overview of surge mitigation functions and technologies
- K.97
- Lightning protection of distributed base stations
- K.98
- Overvoltage protection guide for telecommunication equipment installed in customer premises
- K.99
- Surge protective component application guide - Gas discharge tubes
- K.100
- Measurement of radio frequency electromagnetic fields to determine compliance with human exposure limits when a base station is put into service
- K.101
- Shielding factors for lightning protection
- K.102
- Parameters of fixed-voltage thyristor overvoltage protector components used for the protection of telecommunication installations
- K.103
- Surge protective component application guide - Silicon PN junction components
- K.104
- Method for identifying the transfer potential of the earth potential rise from high or medium voltage networks to the earthing system or neutral of low voltage networks
- K.105
- Lightning protection of photovoltaic power supply systems feeding radio base stations
- K.106
- Techniques to mitigate interference between radio devices and cable or equipment connected to wired broadband networks and cable television networks
- K.107
- Method for determining the impedance to earth of earthing systems
- K.108
- Joint use of poles by telecommunication and solidly earthed power lines
- K.109
- Installation of telecommunication equipment on utility poles
- K.110
- Lightning protection of the dedicated transformer for radio base station
- K.111
- Protection of surrounding structures of telecommunication towers against lightning
- K.112
- Lightning protection, earthing and bonding: practical procedures for radio base station
- K.113
- Generation of radiofrequency electromagnetic fields (RF-EMF) level maps
- K.114
- Electromagnetic compatibility requirements and measurement methods for digital cellular mobile communication base station equipment
- K.115
- Mitigation methods against electromagnetic security threats
- K.116
- EMC requirements and test methods for radio telecommunication terminal equipment
- K.Sup1
- ITU-T K.91 - Guide on electromagnetic fields and health
- K.Sup2
- ITU-T K.52 - Calculator for equivalent isotropic radiated power as described in Recommendation ITU-T K.52
- K.Sup3
- Additional criteria to protect telecommunication cabling during a power cross event
- K.Sup4
- Electromagnetic field (EMF) considerations in smart sustainable cities
ITU-T : Publications : Recommendations : K Series : K.21
ITU-T K.21 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1 (06/2020)
SERIES K: PROTECTION AGAINST INTERFERENCE
Resistibility of telecommunication equipment installed in customer premises to overvoltages and overcurrents
