watt-hour meter

      device that measures and records over time the electric power flowing through a circuit. Although there are several different types of watt-hour meters, each consists essentially of a small electric motor and a counter. A precise fraction of the current flowing in the circuit is diverted to operate the motor. The speed at which the motor turns is proportional to the current in the circuit, and, therefore, each revolution of the motor's rotor corresponds to a given amount of current flowing through the circuit. The counter is connected to the rotor and adds and displays the amount of power the circuit has carried based on the number of revolutions of the rotor. The counter is usually marked in kilowatt-hours (1,000 watt-hours).

      Mercury-type and commutator-type watt-hour meters measure power in direct-current circuits. Induction-type meters measure power in alternating-current circuits and are the type commonly seen on the outside of houses. Specialized watt-hour meters include totalizing meters, which record the power used in more than one circuit, and highly accurate portable meters, which are used for testing installed watt-hour meters.

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Universalium. 2010.

Look at other dictionaries:

  • watt-hour meter — aktyviosios energijos skaitiklis statusas T sritis Standartizacija ir metrologija apibrėžtis Aktyviosios energijos matuoklis, kurio veikimas pagrįstas aktyviosios galios integravimu pagal laiką. atitikmenys: angl. active energy meter; watt hour… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • watt-hour meter — aktyviosios energijos skaitiklis statusas T sritis fizika atitikmenys: angl. active energy meter; watt hour meter vok. Watt Stundenzähler, m; Wirkverbrauchzähler, m rus. счётчик активной энергии, m; счётчик ватт часов, m pranc. compteur d’énergie …   Fizikos terminų žodynas

  • watt-hour meter — aktyviosios energijos skaitiklis statusas T sritis automatika atitikmenys: angl. active energy meter; watt hour meter vok. Wattstundenzähler, m; Wirkverbrauchszähler, m rus. счетчик активной энергии, m; счетчик ватт часов, m pranc. compteur d… …   Automatikos terminų žodynas

  • watt-hour meter — noun A meter which measures, and registers, the amount of electricity consumed in a circuit; especially one connected to a domestic power supply for the purpose of billing …   Wiktionary

  • watt-hour meter — noun : a device to record electric energy usually in kilowatt hours : an integrating wattmeter …   Useful english dictionary

  • Watt-Stundenzähler — aktyviosios energijos skaitiklis statusas T sritis Standartizacija ir metrologija apibrėžtis Aktyviosios energijos matuoklis, kurio veikimas pagrįstas aktyviosios galios integravimu pagal laiką. atitikmenys: angl. active energy meter; watt hour… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Watt-Stundenzähler — aktyviosios energijos skaitiklis statusas T sritis fizika atitikmenys: angl. active energy meter; watt hour meter vok. Watt Stundenzähler, m; Wirkverbrauchzähler, m rus. счётчик активной энергии, m; счётчик ватт часов, m pranc. compteur d’énergie …   Fizikos terminų žodynas

  • Watt — For other uses, see Watt (disambiguation). Kilowatt redirects here. For the community in Kern County, California, see Kilowatt, California. KW redirects here. For other uses, see KW (disambiguation). The watt (pronounced /ˈwɒt/ wot; symbol: W) is …   Wikipedia

  • Electricity meter — Typical North American domestic analog electricity meter …   Wikipedia

  • active energy meter — aktyviosios energijos skaitiklis statusas T sritis Standartizacija ir metrologija apibrėžtis Aktyviosios energijos matuoklis, kurio veikimas pagrįstas aktyviosios galios integravimu pagal laiką. atitikmenys: angl. active energy meter; watt hour… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas


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