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. A unit for measuring the power of motors or the rate of doing work. Steady state is that condition in which the characteristics remain within the limits for normal operation steady state characteristics throughout an. A small java application that is downloaded by an activex or javaenabled web browser. Electric power where the current reverses direction periodically. The funds to perform the work are derived from rates. A load in electrical terms is the power consumed by a device or a circuit. A glossary list made up of common terms and phrases used by professionals in the electrical industry. An electrical circuit that produces an output that is a replica of the input.
This is a great resource for electricians and people who work around electricity. 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. Every effort has been made to be concise and accurate, without talking down to the. In motors, it is the ratio of mechanical output to electrical input indicated by a percent i. Access to protected resources is usually controlled by system software. 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. A glossary of electrical outage terms that may be used in the alectra utilities outage communication service, powerstream media releases or electrical emergency situations. A specific part of nvram is set aside for use by the system readonly storage for the boot device list. Computer software that performs a task or set of tasks, such as word processing or drawing. Ratio of output power over input power expressed in percent. This is important for polarized, grounded receptacles that can be improperly wired and still power a lamp. Ac was adopted for power transmission in the early days of electricity supply because it had.
The current produced by an electromotive force of one volt. A rack unit is typically abbreviated to u and is a measurement defined as 4 inches. Short for ampere, an amp is a unit used to measure the rate of flow of an electric current. The ratio of real power measured in watts to apparent power measured in voltamperes.
Identify the electrical circuits found in the project area, turn them off and tag them with a note before working with the electrical wiring. The ability of the electric system to supply the aggregate electrical demand and energy. Common applets include financial calculators and web drawing programs. Glossary of electrical engineering terms and their definitions. You can help enhance this page by adding new terms or writing definitions for existing ones. Rated output current the maximum continuous load current a power supply is designed to provide under specified operating conditions. Terms used in power electronics study power factor. Appendix a glossary of terms and definitions guidebook. Smart meter an advanced electric meter that records consumption in intervals of an hour or less and communicates that information back to the. 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. Most of the terms identified in this glossary were adopted as part of the development of. Electrical equipment, or power electronics, used to convert power from a photovoltaic array into a form suitable for.
Index of electrical engineering terms maxim ee glossary. The difference between the two is caused by reactance in the circuit and represents power that does no useful work. Ac current changes its direction of flow with respect to time cycles. Electronic governor the computer program within the engine controller which deterines the. One watt hour of electricity is equal to one watt of power being consumed for one hour. Hertz hz the preferred terminology for cycles per second frequency.
Apparent power applied voltage multiplied by current in an ac circuit. Review section 31010 of the electrical code for more understanding ammeter. 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 currentcarrying capacity of conductors or equipment, expressed in amperes. 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. Wind energy is a clean, renewable energy source that is abundant in windy areas. The illustrated dictionary of electronics8th editionhas been revised, clarified, and updated, reflecting technological advances of recent years. The height of server equipment is expressed in multiples of rack units. Ac drive an electronic device used to control the speed of an ac motor. 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. Glossary of terms for the electric utility industry nc state university. The definitions in the glossary have been drawn from many sources and are meant to promote universal understanding. Demandside management managing electric demand with programs that help. This data center glossary should help answer that question.
This glossary of terms contains definitions of commonly used terms on intel customer support. Words and definitions you need to know such as current, voltage, resistance, and more. Glossary of computer system software development terminology 895. A series of interoperable software and hardware products and systems. Electricity glossary electricity industry glossary. Absorptance the ratio of the radiation absorbed by a surface. Power factor the ratio of the actual electrical power dissipated by an ac circuit to the product of the r. Select a letter to view a list of energyrelated terms. Largescale integration laser diode driver laser driver lc circuit. Capacitor a basic electrical component that stores electric charge. Kids learn about electricity glossary and terms in the science of physics. Alternating current ac the type of mains electricity used in the uk having a cyclical current waveform.
Power the rate at which electrical energy is transferred by an electric circuit. An electric meter used to measure current, calibrated in amperes. Ammeters are always connected in series with the circuit to be tested. Glossary of computer system software development terminology. Glossary of terms for the electric utility industry. Most of the terms listed in wikipedia glossaries are already defined and explained within wikipedia itself. Alternating current ac an electric current that reverses its direction many times a second at regular intervals.
If we are missing a term, or definition, please let us know, and we will add your word or term to the list. Understanding electricity requires knowledge of these basic electrical terms. Glossary of electrical and electronics engineering wikipedia. The supply of that electricity is bulk power to the utility, which in turn, supplies electricity to its customers. Glossary of electrical engineering terms and definitions listed alphabetically. 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. Glossary of electrical wiring terms and definitions for devices used for electrical wiring. One terminal is always positive and another is always negative. 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. Spcn gives the operating system control of electrical power. Ampere a unit of measure for the rate of current flow.
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. 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. Therefore, plugs are always dead until they are plugged into a power source such as a wall outlet or generator outlet. A term used to describe that part of an electric power system that. Sometimes this term is used in reference to your data centers electrical system, but more commonly it means the power system inside. That is why we created this short glossary of mustknow power monitoring and electrical terms. See refers you from a term to a preferred synonym, or from an acronym or abbreviation to the defined full form. 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. The new ieee standard dictionary of electrical and electronics terms. 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. It monitors for a fault condition and takes appropriate action. Pictorial glossary the pictorial glossary includes definitions and illustrations for many terms that are frequently used in the electrical industry.
A device that monitors a host microprocessor or microcontrollers supply voltage and, in some cases, its activity. 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. 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. Alternating current ac an electric current that reverses direction on a periodic basis. One amp 1 a is the amount of current produced by an electromotive force of one volt acting through the resistance of one ohm. Environmental protection agency december 1997 terms of environment. Ac inrush current the instantaneous current drawn when the power supply is turned on cold. This glossary is provided as a general informational guide. Ampere the ampere is the standard unit of measure of electric current. Once it has been downloaded, the applet will run on the users computer. It is widely used to transport power on power lines.
Watts are calculated by multiplying volts times amps times power factor. National electrical code nec, or nfpa 70, is a regionally. Glossary all terms and definitions listed alphabetically maxim. This glossary provides terms and definitions for the ibm power systems servers. Glossary of terms used in nerc reliability standards.
This atoz guide is one of the many online resources that cyberpower offers. New definitions have been added in the fields of wireless technology, robotics, and artificial intelligence. It provides a reference that can be considered to have zero voltage. Glossary dictionary of electronics terms hobby projects. 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. Power electronics terminology power electronics a to z.
If a current completes one cycle per second, then the frequency is 1 hz. Pertaining to a resource that is currently operational. Ammeter an instrument for measuring the flow of electrical current in amperes. Anode the positive power terminal of an scr or diode. 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 ampere is used to measure electricity much as gallons per minute is used to measure water flow. The electrical energy unit of measure equal to one watt of power supplied to, or taken from, an electric circuit steadily for one hour. For example, a switching power supply labeled with a nominal 100 to 240 vac input range will actually operate over 90264 vac input range. 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. Glossary of electric system terms vermont electric power. The ability to read, update, or otherwise use a resource. Glossary of power transformer terms photo by radar. Glossary of terms frequently used in electric utilities. Common power controller terms 3 wire wye a three phase load in which one end from each load in tied together.
Electrics electrical glossary is a resource to help you understand terms that electricians use. A firmware component of a microprocessor controlled system. Still, it wouldnt hurt you to be familiar with at least some of the most basic terms you will come across in your endeavors. Discharge the conversion of the chemical energy of a battery into electric energy. Terms that are underlined and italicized are included in the glossary as a separate definition. 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. Computerized cpm solutions are software applications that enable process manufacturers to. Battery a device that stores and produces electricity from chemical cells. 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. Glossary dictionary of electronics terms a a abbreviation for ampere a unit of electrical current.
Electrical parts and materials should be approved for the specific project and compliant with local and national electrical codes. A quantitative measurement of electrical power taking into account power factor. The commonly available electric power supplied by an ac generator and is distributed in single or threephase forms. 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. 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. Glossary all terms and definitions listed alphabetically.
The amount of energy being used by a household or business over any given time period. Condenser microphones require electrical power to run internal ampli. Most of the terms listed in wikipedia glossaries are already defined and explained within. A term used for power when it is necessary to distinguish among apparent power, complex power and its components, and active and reactive power. Normally used in uk houses at 240v rms alternating at 50 times per second 50 hertz. This document is intended to serve as a glossary of terminology applicable to software development and computerized systems in fda regulated industries. Abatement the reduction or elimination of pollution. This is the type of electrical current supplied by a battery. Glossary of electrical and utility related terms price electric. Electrical power, in order to be useful, must be converted to the correct voltage for the intended application. It will facilitate consistency in describing the requirements of the law and regulations applicable to such products and systems. Discover the meaning of some of the most common electrical terms used in our industry. The abbreviations ac and dc are often used to mean simply alternating and direct, as when they modify current or voltage. Glossary of terms homeworks tricounty electric cooperative.
The minimum amount of electric power delivered or required over a given period at a constant rate. These systems include hardware, software, communications, consumer energy displays and controllers. 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. 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. All other circuit voltages positive or negative are measured or defined with respect to it. 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. Receives electric power from a nearby generating facility and uses a large power transformer to increase the. The maximum load, or usage, of electrical power occurring in a given period of time, typically a day.
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