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ABB Group is a Swedish-Swiss [6] [7] [8] multinational electrical engineering corporation. Incorporated in Switzerland as ABB Ltd. , and headquartered in Zurich , [ 1 ] it is dual-listed on the SIX Swiss Exchange in Zurich and the Nasdaq Nordic exchange in Stockholm , Sweden . [ 9 ]
An electrical device that opens and closes a circuit; it may be manually operated, automatically operated by some other electrical circuit, or operated by the change in some physical condition such as flow, level, or temperature. switched reluctance motor A motor that relies on induced magnetism in salient poles, instead of a rotor winding.
In the electric power industry, an intelligent electronic device (IED) is an integrated microprocessor-based controller of power system equipment, such as circuit breakers, transformers and capacitor banks. [1]
The electrical arrangement of valve arms and other components essential for the function of the main power circuit of a converter. converter section of a double converter That part of a double converter in which the main direct current when viewed from the DC terminals always flows in the same direction. controllable valve device
engineering Bill of Material EBU engine build-up EC engineering control (also E/C) ECAM electronic centralised aircraft monitor ECET end of civil evening twilight: ECR Engineering Change Request ECS Environmental control system ECU Engine Control Unit (=EEC) EDR engineering data record EDTO extended diversion time operations: EEC
In electric power distribution, automatic circuit reclosers (ACRs) are a class of switchgear designed for use on overhead electricity distribution networks to detect and interrupt transient faults. Also known as reclosers or autoreclosers , ACRs are essentially rated circuit breakers with integrated current and voltage sensors and a protection ...
Control engineering or control systems engineering is an engineering discipline that applies automatic control theory to design systems with desired behaviors in control environments. [139] The discipline of controls overlaps and is usually taught along with electrical engineering at many institutions around the world. [139]. Convex lens
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