International Electrotechnical Commission - IEC
IEC, founded in 1906, is a non-government organization that prepares and publishes international standards for all electrical, electronic and related matters, such as the assessment of conformity to standards.
Any country desiring to participate in the work of the IEC shall form a Electrotechnical Committee for its own country, this Committee is called National Committee. There shall be only one National Committee for each country. There are two forms of participation in the IEC:
  1. Full membership gives the possibility of fully participating in international standardization activities.
  2. Associate membership allows for limited participation of countries with limited resources.
In addition, a Pre-Associate membership status provides countries with support in forming a national electrotechnical committee, with the aim of becoming Associate members.
The standards work of the IEC is carried out by technical committees (TCs) and subcommittees (SCs). The committees prepare technical documents which are then submitted to IEC’s members for voting with a view to their approval as international standards. Full member has the right to participate in the work of technical committees and subcommittees as
  1. Participating member (P-member) with an obligation to vote on all questions formally submitted for voting within technical committees or subcommittees, and to participate in meetings, or
  2. Observer member (O-member) to follow the work as an observer and therefore to receive committee documents and to have right to submit comments and to attend meetings.
Thailand and IEC
Thailand, by The Thai Industrial Standards Institute (TISI), has been participating as Full member in the IEC since 1991. The national policy concerning the activities of the IEC shall be determined by The Thai National Committee for IEC establishing under the Cabinet resolution. In the development of IEC standards, Thailand has been participating in 31 technical committees and subcommittees as P-member and in 58 committees as O-member.

  P-member 31     O-member 58  
IEC/TCs/SCs Member Secretariat
TC 14 Power Transformers   O United Kingdom
TC 15 Insulating Materials   O Italy
TC 17 Switchgear and Controlgear   O Sweden
  •   TC 17 SC 17A High-voltage Switchgear and Controlgear
    		•   O Sweden
  •   TC 17 SC 17B Low-votage Switchgear and Contolgear
    		•   O France
  •   TC 17 SC 17C High-voltage Enclosed Switchgear and Controlgear
    		•   O Germany
  •   TC 17 SC 17D Low-voltage Switchgear and Controlgear Assemblies
    		•   O Germany
    TC 20 Electric Cables   O United Kingdom
    TC 22 Power Electronics   O Switzerland
  •   TC 22 SC 22E Stabilized Power Supplies
    		•   O Switzerland
  •   TC 22 SC 22G Semiconductor Power Converters for Adjustable Speed Electric Drive Systems
    		•   O U.S.A.
  •   TC 22 SC 22H Uninterruptible power systems (UPS)
    		• P   France
    TC 23 Electrical Accessories   O Belgium
  •   TC 23 SC 23B Plugs, Socket-outlets and Switches
    		•   O Italy
  •   TC 23 SC 23C World-wide Plug and Socket-outlet Systems
    		• P   South Africa
  •   TC 23 SC 23E Circuit-breakers and Similar Equipment for Household Use
    		•   O Italy
  •   TC 23 SC 23G Appliance Couplers
    		•   O Sweden
  •   TC 23 SC 23H Industrial Plugs and Socket-outlets
    		•   O France
  •   TC 23 SC 23J Switches for Appliances
    		•   O Germany
    TC 31 Electrical Apparatus for Explosive Atmospheres   O United Kingdom
  •   TC 31 SC 31M Non-electrical equipment and protective systems for explosive atmospheres (provisional)
    		•   O Germany
    TC 32 Fuses   O France
  •   TC 32 SC 32A High-voltage Fuses
    		•   O France
  •   TC 32 SC 32B Low-voltage Fuses
    		•   O Germany
  •   TC 32 SC 32C Miniature
    		•   O Germany
    TC 33 Power Capacitors P   Italy
    TC 34 Lamps and Related Equipment P   United Kingdom
  •   TC 34 SC 34A Lamps
    		• P   United Kingdom
  •   TC 34 SC 34B Lamp Caps and Holders
    		• P   Netherlands
  •   TC 34 SC 34C Auxiliaries for lamps
    		• P   United Kingdom
  •   TC 34 SC 34D Luminaires
    		•   O United Kingdom
    TC 36 Insulators   O Italy
  •   TC 36 SC 36B Insulators for Overhead Lines
    		•   O France
    TC 39 Electronic Tubes   O Netherlands
    TC 40 Capacitors and Rdsistors for Electronic Equipment   O Netherlands
    TC 46 Cables, Wires, Waveguides, R.F. Connectors, and Accessories for Communication and Singalling P   U.S.A
    TC 47 Semiconductor Devices   O U.S.A.
    TC 47 SC 47D Mechanical standardization for semiconductor devices   O U.S.A.
    TC 48 Electromechanical Components for Electronic Equipment   O U.S.A.
    TC 55 Winding Wires   O Sweden
    TC 59 Performance of Household Electrical Appliances P   Germany
  •   TC 59 SC 59L Small Household Appliances
    		• P   Italy
    TC 61 Safety of Household and Similar Electrical Appliances P   U.S.A.
  •   TC 61 SC 61B Safety of Microwave Ovens
    		•   O U.S.A.
  •   TC 61 SC 61C Household Appliances for Refrigeration
    		•   O France
  •   TC 61 SC 61D Appliances for Air-condition-ing for Household and Similar Purposes
    		•   O U.S.A.
  •   TC 61 SC 61 E Safety of Electrical Catering equipment
    		•   O South Africa
    TC 76 Optical Radiation Safety and Laser Equipment   O U.S.A.
    TC 77 Electromagnetic Compatibility P   Germany
  •   TC 77 SC 77 A Low Frequency Phenomena
    		• P   France
  •   TC 77 SC 77 B High frequency phenomena
    		• P   France
  •   TC 77 SC 77 C High Power Transient Phenomena
    		• P   Sweden
    TC 81 Lightning Protection   O Italy
    TC 82 Solar Photovoltaic Energy Systems P   U.S.A.
    TC 86 Fiber Optics P   U.S.A.
  •   TC 86 SC 86A Fibres and Cables
    		• P   France
  •   TC 86 SC 86B Accessories
    		• P   Italy
  •   TC 86 SC 86C Fibre Obtics Systems Specifications
    		• P   U.S.A.
    TC 89 Fire Hazard Testing   O Canada
    TC 100 Audio, Video and Multimedia Systems and Equipment   O Netherlands
    TC 101 Electrostatics   O Germany
    TC 104 Environmental Conditions, Classification and Methods of Test   O Sweden
    TC 105 Fuel Cell Technologies   O Germany
    TC 106 Methods for the Assessment of Electric, Magnetic and Electromagnetic Fields Associated with Human Exposure   O Canada
    TC 108 Safety of Electronic Equipment within the Field of Audio/Video, Information Technology and Communication Technology   O U.S.A
    TC 111 Environmental Standardization for Electrical and Electronic Products and Systems P   Italy
    TC 112 Evaluation and Qualification of Electrical Insulating Materials and Systems   O Germany
    CISPR International Special Committee on Radio Interference P   United Kingdom
  •   CISPR A Radio-Interference Measurements and Statistical Methods
    		• P   U.S.A.
  •   CISPR B Interference Relating to Industrial, Scientific and Medical Radio-Frequency Apparatus
    		•   O Japan
  •   CISPR D Interference Relating to Motor Vehicles and Internal-Combustion Engines
    		•   O Germany
  •   CISPR F Interference Relating to Household Appliances, Tools, Lighting Equipment and Similar Apparatus
    		• P   Netherlands
  •   CISPR H Limits for protection of radio services
    		•  P   Denmark
  •   CISPR I Electromagnetic Compatibility of Information Technology Equipment, Multimedia Equipment and Receivers
    		• P   Japan
    *ISO/IEC JTC 1 Joint Technical Committee for Information Technology   O U.S.A.(ANSI)
  •   *ISO/IEC JTC 1 SC 2 Coded Character Sets
    		• P   Swiss
  •   *ISO/IEC JTC 1 SC 6 Telecommunications and Information Exchange between Systems
    		•   O U.S.A
  •   *ISO/IEC JTC 1/SC 7 Software Engineering
    		• P   Canada
  •   *ISO/IEC JTC 1 SC 11 Flexible Magnetic Media for Digital Data Interchange
    		•   O U.S.A
  •   *ISO/IEC JTC 1/SC 17 Identification Cards and Related Devices
    		•   O United Kingdom
  •   *ISO/IEC JTC 1 SC 22 Programming Languages, Their Environments and System Software Interfaces
    		•   O U.S.A
  •   *ISO/IEC JTC 1 SC 23 Optical Disk Cartridges for Information Interchange
    		•   O Japan
  •   *ISO/IEC JTC 1 SC 24 Computer Graphics and Image Processing
    		•   O United Kingdom
  •   *ISO/IEC JTC 1 SC 27 IT Security techniques
    		•   O Germany
  •   *ISO/IEC JTC 1 SC 28 Office Equipment
    		• P   Brazil
  •   *ISO/IEC JTC 1 SC 31 Automatic identification and data capture
    		•   O U.S.A
  •   *ISO/IEC JTC 1 SC 34 Document description and processing languages
    		• P   Canada
  •   *ISO/IEC JTC 1 SC 37 Biometrics
    		•  P   U.S.A. (ANSI)
    *ISO/IEC JTC 2 Energy Efficiency and Renewable Energy Sources- common International Terminology   O france

    Note * ISO/IEC/JTC 1 is a joint technical committee of ISO and IEC
    Last Update : August 2010
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