ELECTRICAL ENCYCLOPEDIA

ANSI Device Numbers   In the design of electrical power systems, the ANSI Standard Device Numbers (ANSI /IEEE Standard C37.2) denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault. Device numbers are used to identify the functions of devices shown on a schematic diagram. Function descriptions are given in the standard.  continue.. ANSI Device Numbers Easy Page Guide   Device numbers may be combined if the device provides multiple functions, such as the instantaneous/time-delay AC over current relay denoted as 50/51  continue.. ANSI Codes – Device Designation Numbers   In the design of electrical power systems, the ANSI Standard Device Numbers (ANSI /IEEE Standard C37.2) denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect ...

What is the National Electrical Code?   The National Electric Code is a document sponsored by the National Fire Protection Agency. It is a book electricians will have to learn before obtaining there license. Most electricians can find articles easily because they have spent so much time studying the book. For a person looking thru the book for the first time, it would be easier to use the index in the back of the book. There are so many applications for each wiring job, it would be hard for the NEC. to list all of them.. continue.. National Electrical Code(NEC) or NFPA 70   The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment. The NEC, while having no legally binding regulation as written, can be and often is adopted by states, municipalities and cities in an effort to standardize their enforcement of safe electrical practices within their respective jurisdiction. In some cases, th...

About IEC Standard   Millions of devices that contain electronics, and use or produce electricity, rely on IEC International Standards and Conformity Assessment Systems to perform, fit and work safely together. Founded in 1906, the IEC (International Electrotechnical Commission) is the world’s leading organization for the preparation and publication of International Standards for all electrical, electronic and related technologies. These are known collectively as “electrotechnology”.. continue.. List of IEC Standard   This is an incomplete list of standards published by the International Electrotechnical Commission (IEC). IEC standards may have multiple sub-part documents, only the main title for the standard is listed here: IEC 60027 Letter symbols to be used in electrical technology... IEC 60034 Rotating electrical machinery IEC 60038 IEC Standard Voltages IEC 60044 Instrument transformers. continue.. Comparison between IEC and ANSI Standard   Comparis...

What is IEEE Standards?   The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) is an organization within IEEE that develops global standards in a broad range of industries, including: power and energy, biomedical and health care, information technology, telecommunication, transportation, nanotechnology, information assurance, and many more. IEEE-SA has developed standards for over a century, through a program that offers balance, openness, fair procedures, and consensus. Technical experts from all over the world participate in the development of IEEE standards.. continue.. History of IEEE Organization   In the spring of 1884, a small group of individuals in the electrical professions met in New York. They formed a new organization to support professionals in their nascent field and to aid them in their efforts to apply innovation for the betterment of humanity—the American Institute of Electrical Engineers, or AIEE for short. Tha...