Apparent power applied voltage multiplied by current in an ac circuit. Capacitor a basic electrical component that stores electric charge. Identify the electrical circuits found in the project area, turn them off and tag them with a note before working with the electrical wiring. Terms that are underlined and italicized are included in the glossary as a separate definition. Short for ampere, an amp is a unit used to measure the rate of flow of an electric current. Common power controller terms 3 wire wye a three phase load in which one end from each load in tied together. Glossary all terms and definitions listed alphabetically maxim.
This glossary of terms contains definitions of commonly used terms on intel customer support. The funds to perform the work are derived from rates. Index of electrical engineering terms maxim ee glossary. In motors, it is the ratio of mechanical output to electrical input indicated by a percent i. Common applets include financial calculators and web drawing programs. Spcn connects the power system in participating components to the operating system and can report critical changes and power failures in those components to the operating system. Advanced metering infrastructure ami systems that measure, collect, and analyze energy usage, and communicate with metering devices such as electric meters, gas meters, heat meters, and water meters, either on request or on a schedule.
If we are missing a term, or definition, please let us know, and we will add your word or term to the list. The funds to perform the work are derived from rates and go into a sinking fund that is used at the discretion of the municipality the electric line is in. Electrical parts and materials should be approved for the specific project and compliant with local and national electrical codes. Glossary of electrical engineering terms and their definitions. Ac current changes its direction of flow with respect to time cycles. One watt hour of electricity is equal to one watt of power being consumed for one hour. Whether youre lost in a labyrinthine tech support forum and nothings making sense, or you just want to refresh your pc building and maintenance knowledge, were here to help with a glossary of. Alternating current ac an electric current that reverses direction on a periodic basis. Therefore, plugs are always dead until they are plugged into a power source such as a wall outlet or generator outlet.
An electrical circuit that produces an output that is a replica of the input. Kids learn about electricity glossary and terms in the science of physics. The ability to read, update, or otherwise use a resource. The currentcarrying capacity of conductors or equipment, expressed in amperes. Glossary of computer system software development terminology 895. Electricity glossary electricity industry glossary.
Computer software that performs a task or set of tasks, such as word processing or drawing. Hertz hz the preferred terminology for cycles per second frequency. Ammeter an instrument for measuring the flow of electrical current in amperes. Glossary of computer system software development terminology. Ammeters are always connected in series with the circuit to be tested. Glossary of electrical engineering terms and definitions listed alphabetically. Electronic governor the computer program within the engine controller which deterines the. The electrical energy unit of measure equal to one watt of power supplied to, or taken from, an electric circuit steadily for one hour. Steady state is that condition in which the characteristics remain within the limits for normal operation steady state characteristics throughout an. The current produced by an electromotive force of one volt.
See refers you from a term to a preferred synonym, or from an acronym or abbreviation to the defined full form see also refers you to a related or contrasting term for other terms and definitions, see the ibm terminology website opens in new window. Wind energy is a clean, renewable energy source that is abundant in windy areas. A device that monitors a host microprocessor or microcontrollers supply voltage and, in some cases, its activity. This glossary provides terms and definitions for the ibm power systems servers. Glossary of electrical and electronics engineering wikipedia. Glossary of electric utility terms advanced metering infrastructure ami systems that measure, collect, and analyze energy usage, and communicate with metering devices such as electric meters, gas meters, heat meters, and water meters, either on request or on a schedule. The supply of that electricity is bulk power to the utility, which in turn, supplies electricity to its customers. Glossary of terms homeworks tricounty electric cooperative. Every effort has been made to be concise and accurate, without talking down to the. It provides a reference that can be considered to have zero voltage.
Watts are calculated by multiplying volts times amps times power factor. Absorptance the ratio of the radiation absorbed by a surface. Ac drive an electronic device used to control the speed of an ac motor. Computerized cpm solutions are software applications that enable process manufacturers to. It can cause overvoltages and overcurrents in an electrical power system and can pose a risk to transmission and distribution equipment and to operational personnel. Large wind farms are often located outside of cities, supplying power for electrical grids within the city. It might also include agents for enabling thirdparty management software to monitor or manage the. Access to protected resources is usually controlled by system software.
These systems include hardware, software, communications, consumer energy displays and controllers. Most of the terms listed in wikipedia glossaries are already defined and explained within wikipedia itself. Largescale integration laser diode driver laser driver lc circuit. Abatement the reduction or elimination of pollution. A small java application that is downloaded by an activex or javaenabled web browser. New definitions have been added in the fields of wireless technology, robotics, and artificial intelligence. Glossary of terms frequently used in electric utilities. Sometimes this term is used in reference to your data centers electrical system, but more commonly it means the power system inside. From definitions for cyberpower phrases to explanations of terms common to the power industry, our powerpedia glossary will help you hone your understanding of relevant technical matters. The amount of energy being used by a household or business over any given time period. Glossary of terms for the electric utility industry. Discharge the conversion of the chemical energy of a battery into electric energy. Environmental protection agency december 1997 terms of environment.
Power electronics terminology power electronics a to z. This atoz guide is one of the many online resources that cyberpower offers. Alternating current an electric current that continually reverses its direction giving a definite plus and minus wave form at fixed intervals ampere or amp a unit of measure for an electrical current. Electric power where the current reverses direction periodically. Normally used in uk houses at 240v rms alternating at 50 times per second 50 hertz. One terminal is always positive and another is always negative. One amp 1 a is the amount of current produced by an electromotive force of one volt acting through the resistance of one ohm.
If you would like to make a correction or add a term to this glossary, email a definition and citationreference for the word to media and public communications office. It is widely used to transport power on power lines. The commonly available electric power supplied by an ac generator and is distributed in single or threephase forms. Glossary of terms used in nerc reliability standards. A series of interoperable software and hardware products and systems. Alternating current ac an electric current that reverses its direction many times a second at regular intervals.
Ampere the ampere is the standard unit of measure of electric current. If a current completes one cycle per second, then the frequency is 1 hz. Pictorial glossary the pictorial glossary includes definitions and illustrations for many terms that are frequently used in the electrical industry. A term used for power when it is necessary to distinguish among apparent power, complex power and its components, and active and reactive power. A term used to describe that part of an electric power system that. The height of server equipment is expressed in multiples of rack units. Standard household electrical cable ranges from 14 awg american wire gauge to 6 awg, with 14 having the smallest conductors and 6 having the largest. This glossary is provided as a general informational guide. Most of the terms identified in this glossary were adopted as part of the development of nercs initial set of reliability standards, called the version 0 standards. Still, it wouldnt hurt you to be familiar with at least some of the most basic terms you will come across in your endeavors. Highspeed, highenergy electrical disturbances present on ac power lines and data and communication lines, generated by utility switching, motorload switching and lightning strikes. Select a letter to view a list of energyrelated terms. Power the rate at which electrical energy is transferred by an electric circuit. Words and definitions you need to know such as current, voltage, resistance, and more.
Smart grid hardware, software and other upgrades added to the power system to enhance responsiveness to events that impact the electrical power grid and optimize daytoday operational efficiency. This is a great resource for electricians and people who work around electricity. Most of the terms listed in wikipedia glossaries are already defined and explained within. A quantitative measurement of electrical power taking into account power factor. Direct current electrical current constant or pulsating whose electrons flow in one direction only. Terms used in power electronics study power factor. Anode the positive power terminal of an scr or diode.
Demandside management managing electric demand with programs that help. Electrics electrical glossary is a resource to help you understand terms that electricians use. The minimum amount of electric power delivered or required over a given period at a constant rate. This data center glossary should help answer that question. The abbreviations ac and dc are often used to mean simply alternating and direct, as when they modify current or voltage. See refers you from a term to a preferred synonym, or from an acronym or abbreviation to the defined full form. Ac inrush current the instantaneous current drawn when the power supply is turned on cold. Power factor the ratio of the actual electrical power dissipated by an ac circuit to the product of the r. The ratio of real power measured in watts to apparent power measured in voltamperes.
This document is intended to serve as a glossary of terminology applicable to software development and computerized systems in fda regulated industries. Smart meter an advanced electric meter that records consumption in intervals of an hour or less and communicates that information back to the. The following crossreferences are used in this glossary. A glossary list made up of common terms and phrases used by professionals in the electrical industry. Glossary dictionary of electronics terms hobby projects. Ratio of output power over input power expressed in percent. Appendix a glossary of terms and definitions guidebook. Glossary of electrical wiring terms and definitions for devices used for electrical wiring. You can help enhance this page by adding new terms or writing definitions for existing ones. Glossary of electrical and utility related terms price electric. A glossary of electrical outage terms that may be used in the alectra utilities outage communication service, powerstream media releases or electrical emergency situations. Condenser microphones require electrical power to run internal ampli.
The unit of electrical power equal to one ampere under a pressure of one volt. The definitions in the glossary have been drawn from many sources and are meant to promote universal understanding. All other circuit voltages positive or negative are measured or defined with respect to it. The illustrated dictionary of electronics8th editionhas been revised, clarified, and updated, reflecting technological advances of recent years. This glossary lists each term that was defined for use in one or more of nercs continent wide or regional reliability standards and adopted by the nerc board of trustees from february 8, 2005 through august 12, 2019. Glossary of terms for the electric utility industry nc state university. A load in electrical terms is the power consumed by a device or a circuit. Electric current in which the flow of electric charge periodically reverses direction, whereas in direct current dc, also dc, the flow of electric charge is only in one direction. Pertaining to a resource that is currently operational. Safety agencies require a power supply to operate an extended 10% of the stated input range on the product label. Nov 02, 2015 still, it wouldnt hurt you to be familiar with at least some of the most basic terms you will come across in your endeavors.
Battery a device that stores and produces electricity from chemical cells. The ampere is used to measure electricity much as gallons per minute is used to measure water flow. For example, a switching power supply labeled with a nominal 100 to 240 vac input range will actually operate over 90264 vac input range. This is important for polarized, grounded receptacles that can be improperly wired and still power a lamp. A specific part of nvram is set aside for use by the system readonly storage for the boot device list. Once it has been downloaded, the applet will run on the users computer. Most of the terms identified in this glossary were adopted as part of the development of.
Glossary dictionary of electronics terms a a abbreviation for ampere a unit of electrical current. Glossary all terms and definitions listed alphabetically. This is the type of electrical current supplied by a battery. Spcn gives the operating system control of electrical power. A firmware component of a microprocessor controlled system. That is why we created this short glossary of mustknow power monitoring and electrical terms. Rated output current the maximum continuous load current a power supply is designed to provide under specified operating conditions. It monitors for a fault condition and takes appropriate action. Glossary of power transformer terms photo by radar. National electrical code nec, or nfpa 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the united states nema national electrical manufacturers association. The output may be scaled or have increased drive, or it may provide isolation so changes in output conditions do not affect the input or other outputs.
An electric meter used to measure current, calibrated in amperes. Glossary of power terms pdf 0702 technical assistance 800 34391. Understanding electricity requires knowledge of these basic electrical terms. Ampere a unit of measure for the rate of current flow. A series of interoperable software and hardware products and systems from abb andor third parties that are designed to communicate with each other and work together as part of a larger system for a specific. Electrical equipment, or power electronics, used to convert power from a photovoltaic array into a form suitable for.
The difference between the two is caused by reactance in the circuit and represents power that does no useful work. Receives electric power from a nearby generating facility and uses a large power transformer to increase the. The ability of the electric system to supply the aggregate electrical demand and energy. Discover the meaning of some of the most common electrical terms used in our industry. Velcowas formed in 1956 when vermonts local utilities joined together to establish the nations first statewide, transmission only company in order to create and maintain an interconnected electric transmission grid capable of sharing access to clean hydro power. Alternating current ac the type of mains electricity used in the uk having a cyclical current waveform.
A circuit used in switching regulated power supplies where the switching frequency is held constant and the width of the power pulse is varied, controlling both line and load changes with minimal dissipation. National electrical code nec, or nfpa 70, is a regionally. A unit for measuring the power of motors or the rate of doing work. This page contains an alphabetical listing of household electrical terms and definitions to help in identifying the tools, wiring, and devices used for electrical wiring projects around the house. Ac was adopted for power transmission in the early days of electricity supply because it had. It will facilitate consistency in describing the requirements of the law and regulations applicable to such products and systems. The new ieee standard dictionary of electrical and electronics terms. When this type of conversion occurs, there is a slight loss of electrical energy through heat that is a byproduct of the conversion process or. The maximum load, or usage, of electrical power occurring in a given period of time, typically a day. In household electrical systems 14 gauge wire is used for 15 amp circuits, 12 gauge for 20 amp circuits, 10 awg for 30 amps, 8 awg for 40amps, and 6 awg for 50 and 60 amp circuits.
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