Electrical engineering is the technology of the practical applications of the electric, magnetic and electromagnetic phenomena. It generally deals with the study and application of electricity, electronics and electromagnetism, often referred to as the classical electro-technical systems and products. This covers a very wide range of equipment associated mainly with the generation, distribution and use of electrical energy in low and high voltage installations, and for use in industrial and residential environments.
Most of the standardization work in this field is performed by IEC and the resulting specifications are taken over through the mechanism of the Dresden Agreement. Because of the strong direct or indirect link to safety, CENELEC has its own Technical Committees that mirror those of IEC for certain products. Their activity is in particular to ensure that the technical consensus obtained within IEC is in line with the requirements of the applicable European legislative framework.
The activities covered by CENELEC Technical Committees active in electrical engineering comprise amongst other things:
- Generation of electricity: TC 2 (rotating machinery)
- Distribution of electricity: TC 8X (system aspects), TC 11 (overhead lines), TC 14 (transformers), TC 20 (electric cables), TC 36A (bushings)
- HV electric installations HV: TC 17AC (swithgear and controlgear)
- LV electric installations LV: TC 17B (switchgear and controlgear), TC 17D (switchgear and controlgear assemblies), TC 23BX (plugs and socket-outlets), TC 23E (circuit breakers)
- Installation rules: TC 64
- Power electronics: TC 22X
- Electric welding: TC 26A and TC 26B
- Equipment for explosive atmospheres: TC 31
- Live working: TC 78
- Lightning protection: TC 81X
- Household equipment: TC 59X (performance) and TC 61 (safety)
- Electronic components: TC 4OXA (capacitors), TC 40XB (resistors), TC 86BXA (connectors)
- Safety standards for low voltage equipment are listed in the Official Journal of the European Union as harmonized standards under Directive 2006/95/EC, commonly referred to as the low voltage directive (LVD).