The International Electrotechnical Commission (IEC) was established in 1906. It is the earliest international electrotechnical standardization organization in the world, responsible for international standardization in the fields of electrical engineering and electronic engineering. The headquarters of the International Electrotechnical Commission (IEC) was originally located in London, and was moved to its present headquarters in Geneva in 1948.
Extended data:
By the end of 20 18, IEC has issued about 1077 1 IEC standards. These standards are divided into the following eight categories by specialty:
1, the first category
(Basic standard): terminology, unit of magnitude and its letter symbol, graphic symbol, line end symbol, standard voltage, current position and frequency, insulation coordination, insulation structure, environmental test, classification of environmental conditions, reliability and maintainability.
2. The second category
(Raw Material Standard): Methods for measuring the electrical characteristics of working fluids, insulating materials and metal materials, magnetic alloys and steel, and bare aluminum conductors for electrical instruments.
3. The third category
(General safety, installation and operation standards): electrical devices in buildings and ships with harsh outdoor conditions, electrical equipment in explosive gas, electrical equipment in industrial machinery, shell protection, live working tools, lightning protection devices and laser equipment.
4. The fourth category
(Measurement, control and general test standard): electric energy metering and load control equipment, electronic technology and basic electric quantity measuring equipment, industrial process measurement and control, nuclear instruments, transformers, high voltage test devices and technologies.
5, the fifth category
(Power generation and utilization standards): rotating electrical machines, water turbines, steam turbines, power transformers, power electronics, power capacitors, primary batteries and battery packs, power relays, short-circuit current, solar photovoltaic systems, electric traction equipment, electric welding and electric heating equipment, electric cars and trucks.
6. Category VI
(Transmission and distribution standard): switchgear and control equipment, wires, low-voltage fuses and high-voltage fuses, lightning arresters, remote control of power systems, remote protection and communication equipment, and overhead lines.
7, the seventh category
(Telecommunications and electronic components and components standards): semiconductor devices and integrated circuits, printed circuits, capacitors and resistors, miniature fuses, electron tubes, relays, optical fibers, cables, wires and waveguides, electromechanical components, piezoelectric components, magnetic components and ferrite materials.
8, the eighth category
(Telecommunications, electronic systems and equipment and information technology standards): radio communication, information technology equipment, data processing equipment and office machinery, audio and video system equipment, medical electrical equipment, digital data communication of measurement and control systems, remote control and remote protection, electromagnetic compatibility, and the safety of measurement, restriction and suppression of radio interference; Alarm system; Navigation instruments.
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