The electric meter, is also called electrical meter, watt hour meter or energy meter (220V/380V), is a kind of device to measure the electric energy consumed by residence, enterprise or electric equipment.
Watt hour meter (Three Phase Smart Card Meter) is a kind of watt hour meter, which measures the electric energy consumed by the house in kilowatt hours. The meter has a counter in kilowatt hours. The energy consumption is calculated by calculating the reading difference of the counter in a specified period of time.
Using a watt hour meter for metering can provide a key window into your energy consumption and ultimately your energy bill. Users can accurately monitor energy use in real time, rather than waiting until the end of the billing cycle.