Electric meter. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Electricity for beginners
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An electric meter is a device for metering the consumption (consumption) of electricity in AC or DC networks.
Typically, meters are divided into single-phase for two-wire single-phase circuits and three-phase for three- and four-wire three-phase circuits. Three-phase meters are used in electrical installations of three-phase current, as well as at the input of single-phase current installations, to which three phases are supplied (in institutions, apartment buildings). Single-phase meters are mainly used at inputs to individual houses and apartments in apartment buildings.
If electrical appliances are turned on in the apartment, then the current they consume passes through the inductors of the electric meter and rotates an aluminum disk, the rotation speed of which depends on the amount of current consumed. The disc is connected through gears to a system of dials. Each dial is a decimal place corresponding to the amount of electricity consumed, usually in kWh. Through special windows in the glass of the meter, you can take its current readings on electricity consumption.
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