They may used both directly well for the
preparation specifications for international trade. IEC international standards (they may be
called world standards well) cover the entire range electrical and electronic engineering.
The rules for the use electricity became the origin big group standards, electrical rules
(wiring regulations, electrical code how these rules are called some countries). Among these standards can count terminological standards,
standards stating nominal rated values voltages, currents, frequencies, standards comprising
symbols for diagrams and for the use electrical equipment, devices, appliances. First rules for basic use of
electricity were created the second half the last century first for the use the telegraph
and then for the safe use electrical light.). The papers
stating quality materials became the origin another big group standards material or
product standards.
Therefore product standards, i. standards immediately used for the design and construction
of some products, usually consist (especially the field the electrical engineering) many
references basic group standards (for the problems safety, electromagnetic compatibility,
environmental conditions, etc.e.2.
2. Standards the sphere of
electrical engineering belong the oldest technical standards.BASIC ELECTROTECHNICAL STANDARDS 13
There similar situation case environmental atmospheric conditions effecting the
product well case electromagnetic compatibility (effects electromagnetic fields or
disturbing voltages currents products). International and European standardization
And now let read something about the origin standards. The organization was
established the constitutive meeting London 1906 and was named International
Electrotechnical Commission (the internationally used abbreviation IEC based the English
name, CEI based the French name).
The IEC composed National Committees from about countries. Those
are the standards use should use not only connection with the other standards but
also the usual technical work. Product standards use terminology, symbols, and nominal or
rated values given horizontally functioning standards well. Many international
electrical conferences took place the turn the 19th century. Some papers unifying description characteristics of
materials used for electrical purposes were written the second half the last century well. These countries
comprise the world population and consume about the world electrical
. International standards published IEC form the
basis for regional and national standards. the occasion one them,
in the year 1904 Louis (USA), was decided establish international organization
dealing with standardization the sphere electrical engineering.
Very soon became evident for electricians many countries that the international
exchange information the sphere electrical engineering inevitable.
Besides these standards, there exist the so-called standards with horizontal function
