Power components

An arc fault circuit interrupter (AFCI) is a circuit breaker designed to prevent fires by detecting non-working electrical arcs and disconnect power before the arc starts a fire. Advanced electronics inside an AFCI breaker detect sudden bursts of electrical current in milliseconds, long before they would trip a regular overcurrent circuit breaker or fuse. The AFCI should distinguish between a working arc that may occur in the brushes of a vacuum sweeper, light switch, or other household devices and a non-working arc that can occur, for instance, in a lamp cord that has a broken conductor in the cord from overuse. ...more on Wikipedia about "Arc-fault circuit interrupter"

An autorecloser is a circuit breaker equipped with a mechanism that can automatically close the breaker after it has been opened due to a fault. ...more on Wikipedia about "Autorecloser"

A ballast is a device used to start a gas discharge lamp, and, once the lamp is started, to limit the flow of electric current. Gas discharge lamps are sometimes described as having negative resistance and, as such, are unable to limit the flow of current through themselves. More generally the term ballast is sometimes used to refer to any passive component intended to reduce the current in a circuit. ...more on Wikipedia about "Ballast (electrical)"

A busbar (occasionally pronounced "buzz bar") refers in electrical power distribution to thick strips of copper or other material that conduct electricity around a switchboard, distribution board or other electrical apparatus. ...more on Wikipedia about "Busbar"

A bushing is an electrical engineering component that allows a high voltage conductor to pass safely through an earthed metal wall or casing. They appear on switchgear, transformers, circuit breakers and most other high voltage equipment. The bushing is hollow, allowing a conductor to pass along its centre and connect at both ends to other equipment. ...more on Wikipedia about "Bushing (electrical)"

A Cascade Converter is a type of motor-generator which was patented in 1902 by J. L. la Cour and O. S. Bragstad. ...more on Wikipedia about "Cascade converter"

:The term Earth leakage circuit breaker (ELCB) is often incorrectly used to describe its modern counterpart the Residual-current device (RCD). ...more on Wikipedia about "Earth leakage circuit breaker"

In electronics and electrical engineering a fuse, short for 'fusible link', is a type of overcurrent protection device. It has as its critical component a metal wire or strip that will melt when heated by a prescribed (design) current, opening the circuit of which it is a part, thereby protecting the circuit from an overcurrent condition. ...more on Wikipedia about "Fuse (electrical)"

A Maximum power point tracker (or MPPT) is a high efficiency DC ( direct current) to DC power converter that operates a photovoltaic (PV) solar panel or array at a voltage at which maximum power is extracted and efficiently converts that higher (normally) voltage down to a lower voltage battery or external electric load. ...more on Wikipedia about "Maximum power point tracker"

A mercury arc valve is a type of electrical rectifier which converts alternating current into direct current. Rectifiers of this type were used in electric motor power supplies for industry, in electric railways, ...more on Wikipedia about "Mercury arc valve"

A motor-generator (an M-G set) is a device for converting electrical power to another form. In some contexts, the other form is mechanical energy; in other contexts, it is a different form of electricity. The two senses refer to different types of equipment. ...more on Wikipedia about "Motor-generator"

In electrical installations, residual current devices (RCD) "Ground Fault Circuit Interrupter"; along with residual current circuit breakers (RCCB) operate to disconnect a circuit whenever they detect that the flow of current is not balanced between the phase conductor and the neutral conductor which is commonly connected to earth. These devices can be tested to see if they are operational and/or they have been wired correctly. And, those used in 120/240 volt circuits should be tested monthly. ...more on Wikipedia about "Residual-current device"

Rotary Converter refers to a class of electrical machinery that was used to convert one form of electrical power into another form. A typical use was for railway electrification, where utility power was supplied as alternating current ( AC) but the trains were designed to work on direct current ( DC). before the invention of mercury arc rectifiers and high-power semiconductor rectifiers, this conversion could only be accomplished using motor-generator or rotary converters . ...more on Wikipedia about "Rotary converter"

The term switchgear, commonly used in association with the electric power system, or grid, refers to the combination of electrical disconnects and/or circuit breakers meant to isolate equipment in or near an electrical substation. ...more on Wikipedia about "Switchgear" Things Go Better with shortopedia.

The thyristor is a solid-state semiconductor device similar to a diode, with an extra control terminal (gate). A thyristor is functionally different than a diode in that even if the device is forward biased, it will not conduct ("turn on") until the gate is pulsed. Rather than a continuous gate requirment as in BJTs and MOSFETs, thyristors are turned on by a pulsed signal. For SCRs, the control signal is a current pulse. GTO thyristors utilize a voltage pulse and LASCRs require a light pulse. Once turned on, the thyristor will remain on as long as the device is forward biased. While SCRs are just one type of thyristor 1, due to the ubiquity of SCRs through out the power industry, many times the terms are used interchangeably 2. ...more on Wikipedia about "Thyristor"

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