international telecommunication union seminar on impact of electromagnetic field emissions kampala,...

International Telecommunication Union

Seminar on Impact of Electromagnetic Field EmissionsKampala, Uganda, 3-5 September 2003

ITU-T Study Group 5ITU-T Study Group 5PublicationsPublications

Greg JonesITU Telecommunication Standardization

Bureau [email protected]

23-5 September 2003

Seminar on Impact of

Electromagnetic Field Emissions

Kampala, Uganda

ITU-T Study Group 5

o Handbookso Directiveso ITU-T K-series Recommendations

“Protection against electromagnetic environment effects”

33-5 September 2003



Kampala, Uganda

Guide to the use of ITU-T SG5 Publications …

o 1 Scope and objectiveo 2 Terminology and abbreviations

• 2.1 Terminology• 2.2 Abbreviations

o 3 Reference configurationo 4 Electromagnetic compatibility requirements for

telecommunication equipment and installations• 4.1 General• 4.2 EMC requirements for telecommunication

equipment and installations in telecommunication centres and at radio installations

• 4.3 EMC requirements for telecommunication equipment and installations a outdoor locations

• 4.3.1 Telecommunication equipment• 4.3.2 Telecommunication lines

• 4.4 EMC requirements for telecommunication equipment used at customer premises

o ANNEX - Title and abstract of ITU-T Recommendations of the K-series and other relevant Publications

43-5 September 2003



Kampala, Uganda

Scope and responsibilities of the guide

T0507600-97

SG 5

ITU-R ITU-T ITU-D

Recommendations

calculation/estimationtesting/measuring

emission resistibility/immunityprotection/mitigation

safety

Other publications

53-5 September 2003



Kampala, Uganda

Reference configuration

T0507610-97

outdoor location radioinstallation

equipmentfibre or

metallic line customer premises

telecommunicationcentre

63-5 September 2003



Kampala, Uganda

Locations

o Equipment (Table 1)

• Telecommunication centres• Radio installations• Outdoor locations

o Telecommunication lines (Table 2)

• Outdoor locationso Equipment (Table 3)

• Customer premises

73-5 September 2003



Kampala, Uganda

Phenomena relating to equipment

o Power supply effects• Safety, resistability, immunity,

mitigationo High frequency effects

• Immunity, mitigation, Emmissiono EFT – Electrical Fast Transient

• Resistability, immunityo Lightning

• Resistability, immunityo ESD – Electrostatic Discharge

• Resistability, immunity

83-5 September 2003



Kampala, Uganda

Phenomena relating to telecommunication lines

o Power supply effects and low frequency interference• safety, resistibility, immunity

o High frequency induction• immunity, mitigation, emission

o Lightning• resistibility, protection

93-5 September 2003



Kampala, Uganda

Phenomena relating to customer equipment

o Power supply effects• resistability, immunity, mitigation

o High frequency effects• Immunity, emission

o EFT – Electrical Fast Transient• Resistability, immunity

o Lightning• Resistability, immunity

o ESD – Electrostatic Discharge• Immunity

103-5 September 2003



Kampala, Uganda

Types and subjects of publications

o Basic• general, Calculation/estimation,

testing/measuringo Generico Protection or mitigation

• Overhead pairs, buried cable with metal pairs, optical fibre cable

o Safety




Kampala, Uganda

ITU-T SG5 Handbooks

o Earthing of Telecommunication Installations (1976)

o Guide to the use of ITU-T SG5 Publicationso Interference Measurement Techniques

(2002)

o The Protection of Telecommunication Lines and Equipment Against Lightning Discharges• Chapters 1 to 5 (1974)

• Chapters 6, 7 and 8 (1978)

• Chapters 9 and 10 (1994)




Kampala, Uganda

Directives

Vol I Design, construction and operational principles of telecommunication, power and electrified railway facilities

Vol II Calculating induced voltages and currents in practical cases

Vol III Capacitive, inductive and conductive coupling: physical theory and calculation methods

Vol IV: Inducing currents and voltages in electrified railway systems

Vol V Inducing currents and voltages in power transmission and distribution systems

Vol VI Danger and disturbanceVol VII Protective measures and safety precautionsVol VIII Protective devicesVol IX Testing methods and measuring apparatus

Directives Concerning the Protection of Telecommunication Lines against Harmful Effects from Electric Power and Electrified Railway Lines




Kampala, Uganda

Examples of ITU-T K-Series Recommendations

Human exposure to EMF

o K.52 (02/00) Guidance on complying with limits for human exposure to electromagnetic fields

Resistability

o K.20 (02/00) Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents

o K.21 (10/00) Resistibility of telecommunication equipment installed in customer's premises to overvoltages and overcurrents

o K.44 (02/00) Resistibility tests of telecommunication equipment exposed to overvoltages and overcurrents – Basic Recommendation

o K.45 (02/00) Resistibility of access network equipment to overvoltages and overcurrents




Kampala, Uganda

ITU-T K-Series Recommendations approved in July 2003

K.20 Resistibility of Telecommunication Equipment installed in a Telecommunications Centre to Overvoltages and Overcurrents

K.21 Resistibility of Telecommunication Equipment installed in Customer Premises to Overvoltages and Overcurrents

K.34 Classification of electromagnetic environmental conditions for telecommunication equipment - Basic EMC Recommendation

K.43 Immunity Requirements for Telecommunication Equipment

K.44 Resistibility tests for Telecommunication Equipment exposed to overvoltages and overcurrents - Basic Recommendation

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.48 EMC requirements for each telecommunication Equipment - product family recommendation




Kampala, Uganda

Recently approved ITU-T K-Series Recommendations

o K.56 Protection of radio base stations against lightning discharges

o K.58 EMC, Resistibility and Safety Requirements and Procedures for Co-located Telecommunication Installations

o K.59 EMC, Resistibility and Safety Requirements and Procedure for Connection to Unbundled Cables

o K.60 Emission limits and test methods for Telecommunication Networks




Kampala, Uganda

ITU-T K-Series Recommendations under approval

o K.57 Protection Measures for Radio Base Stations sited on Power Line Towers

o K.61 Guidance to measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations

AAP Review period ends 5 September 2003




Kampala, Uganda

ITU-T K-Series Recommendations

o The following slides are included for reference only and do not form part of the presentation




Kampala, Uganda

K-series Recommendations

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




Kampala, Uganda


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 Protection of remote-feeding systems and line repeaters against lightning and interference from neighbouring electricity lines

K.17 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




Kampala, Uganda


K.20 Resistibility of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents

K.21 Resistibility of telecommunication equipment installed in costumer's premises to overvoltages and overcurrents

K.22 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 Protection of optical fibre cablesK.26 Protection of telecommunication lines

against harmful effects from electric power and electrified railway lines




Kampala, Uganda


K.27 Bonding configurations and earthing inside a telecommunication building

K.28 Characteristics of semi-conductor arrester assemblies for the protection of telecommunications installations

K.29 Coordinated protection schemes for telecommunication cables below ground

K.30 Positive temperature coefficient (PTc) thermistors

K.31 Bonding configurations and earthing of telecommunication installations inside a subscriber's building

K.33 Limits for people safety related to coupling into telecommunications system from a.c. electric power and a.c. electrified railway installations in fault conditions




Kampala, Uganda


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 devicesK.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




Kampala, Uganda

K-series RecommendationsK.41 Resistibility of internal interfaces of

telecommunication centres to surge overvoltages

K.42 Analytical method to calculate visibility statistics for non-geostationary satellite orbit satellites as seen from a point on the Earth's surface

K.43 Immunity requirements for telecommunication equipment

K.44 Resistibility of telecommunication equipment to overvoltages and overcurrents

K.45 Resistibility of access network equipment to overvoltages and overcurrents

K.46 Protection of telecommunication lines using metallic symmetric conductors against lightning induced surges

K.47 Protection of telecommunication lines using metallic conductors against direct lightning discharges




Kampala, Uganda


K.48 EMC requirements for each telecommunication network equipment - Product family Recommendation

K.49 Test condition and performance criteria for voice terminal subject to disturbance from digital mobile phone

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 Values of induced voltages on telecommunication installations to establish telecom and a.c. power and railway operators responsibilities




Kampala, Uganda


K.54 Conducted immunity test method and level at fundamental power frequencies

K.55 Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminations

K.56 Protection of radio base stations against lightning discharges

K.58 EMC, resistibility and safety requirements and procedures for co-located telecommunication installations

K.59 EMC, resistibility and safety requirements and procedure for connection to unbundled cables

K.60 Emission limits and test methods for telecommunication networks

international telecommunication union seminar on impact of electromagnetic field emissions kampala,...

Documents

o guide

abbreviations o

objective o

overcurrents o

reference configuration

guide slide

customer premises slide

directives vol