An electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device.
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14 Facts About Electricity meter
2.
The electrochemical Electricity meter was labor-intensive to read and not well received by customers.
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3.
The first accurate, recording electricity consumption meter was a DC meter by Dr Hermann Aron, who patented it in 1883.
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4.
Aron's Electricity meter recorded the total charge used over time, and showed it on a series of clock dials.
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5.
For larger loads, more than about 200 ampere of load, current transformers are used, so that the Electricity meter can be located somewhere other than in line with the service conductors.
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Largest source of long-term errors in the Electricity meter is drift in the preamp, followed by the precision of the voltage reference.
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7.
Electricity meter'storically, rotating meters could report their metered information remotely, using a pair of electrical contacts attached to a KYZ line.
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8.
Some modern meters supply a contact closure that warns when the meter detects a demand near a higher electricity tariff, to improve demand side management.
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9.
An electronic Electricity meter can transmit its readings by telephone line or radio to a central billing office.
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10.
Projects such as Google PowerMeter, take information from a smart Electricity meter and make it more readily available to users to help encourage conservation.
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11.
The Electricity meter is plugged into an outlet, and the appliance to be measured is plugged into the Electricity meter.
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12.
An Economy 10 meter is available, which gives 10 hours of cheap off-peak electricity spread out over three timeslots throughout a 24-hour period.
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13.
Current transformers permit the Electricity meter to be located remotely from the current-carrying conductors.
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14.
The final resort is for the disputed Electricity meter to be fully tested both in the installed location and at a specialist calibration laboratory.
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