04-04-2017, 01:03 PM
An electrical meter, an electric meter, an electric meter or an energy meter is a device that measures the amount of electrical energy consumed by a residence, business or electrical device. Electric utilities use electric meters installed at customers' facilities to measure the electrical energy delivered to their customers for billing purposes. Usually calibrated in billing units, the most common is kilowatt hour [kWh]. Usually, each billing period is read.
When energy savings are desired during certain periods, some meters can measure demand, the maximum use of energy in some interval. The "time of day" measurement allows to change the electric rates during a day, to register the use during the high periods of high cost and the periods of off peak, of less cost. In addition, in some areas the meters have relays for load shedding to respond to demand during peak load periods.
When energy savings are desired during certain periods, some meters can measure demand, the maximum use of energy in some interval. The "time of day" measurement allows to change the electric rates during a day, to register the use during the high periods of high cost and the periods of off peak, of less cost. In addition, in some areas the meters have relays for load shedding to respond to demand during peak load periods.
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