Search results
Results from the WOW.Com Content Network
Usually utilization category is mentioned in most of the switch gear, with the above contactor stating to be used under AC1 - resistive load & AC3 for motor usage In electrical engineering utilization categories are defined by IEC standards [ 1 ] and indicate the type of electrical load and duty cycle of the loads to ease selection of ...
Pages in category "IEC standards" The following 200 pages are in this category, out of approximately 238 total. ... IEC 60947; IEC 60950; IEC 61000; IEC 61000-3-2 ...
The current rating of the contactor depends on utilization category. Example IEC categories in standard 60947 are described as: AC-1 - Non-inductive or slightly inductive loads, resistance furnaces; AC-2 - Starting of slip-ring motors: starting, switching-off; AC-3 - Starting of squirrel-cage motors and switching-off only after the motor is up ...
IEC 60947 Low-voltage switchgear and control gear; IEC 60948 Numeric keyboard for home electronic systems (HES) IEC 60949 Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects; IEC 60950 Information technology equipment – Safety
IEC Standards that are not jointly developed with ISO have numbers in the range 60000–79999 and their titles take a form such as IEC 60417: Graphical symbols for use on equipment. Following the Dresden Agreement with CENELEC the numbers of older IEC standards were converted in 1997 by adding 60000, for example IEC 27 became IEC 60027 ...
Schematic representation of measurement categories. Measurement category is a method of classification by the International Electrotechnical Commission (IEC) [1] of live electric circuits used in measurement and testing of installations and equipment, usually in the relation within a building (residential or industrial).
An electrical code is a term for a set of regulations for the design and installation of electrical wiring in a building. The intention of such regulations is to provide standards to ensure electrical wiring systems are safe for people and property, protecting them from electrical shock and fire hazards.
The International Electrotechnical Vocabulary (IEV) is managed list of terms and definitions organized by the International Electrotechnical Commission (IEC), which is grouped in classes. It serves to promote the global unification of terminology in the field of electrotechnology, electronics and telecommunications.