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A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board. The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are grouped or matched with ...
SCADA. v. t. e. A distributed control system ( DCS) is a computerized control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory control. This is in contrast to systems that use centralized controllers; either discrete ...
Aircraft continuous airworthiness monitoring. ACARS. Aircraft Communications Addressing and Reporting System. ACAS. Airborne collision avoidance system. ACC. Area control centre [1] ACC. Active clearance control.
Engineering drawing abbreviations and symbols are used to communicate and detail the characteristics of an engineering drawing. This list includes abbreviations common to the vocabulary of people who work with engineering drawings in the manufacture and inspection of parts and assemblies. Technical standards exist to provide glossaries of ...
ABB. ABB Ltd. is a Swedish – Swiss multinational corporation headquartered in Västerås, Sweden, and Zürich, Switzerland. [5] It is traded on the SIX Swiss Exchange in Zürich, the Nasdaq Nordic exchange in Sweden and the OTC Markets Group 's pink sheets in the United States. [6] It was ranked 340th in the Fortune Global 500 list of 2020 ...
A solid-state transformer (SST), power electronic transformer (PET), or electronic power transformer is actually an AC-to-AC converter, a type of electric power converter that replaces a conventional transformer used in AC electric power distribution. It is more complex than a conventional transformer operating at utility frequency, but it can ...
Vector group. In electrical engineering, a vector group, officially called a connection symbol, is the International Electrotechnical Commission (IEC) method of categorizing the high voltage (HV) windings and low voltage (LV) winding configurations of three-phase transformers. The vector group designation indicates the windings configurations ...
A distribution board (also known as panelboard, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure. Normally, a main switch, and in recent ...
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