Reading of electric energy meter: the difference between single-phase and three-phase

Electric energy meter is an instrument for measuring electric energy and an important tool for measuring electric energy. This paper will introduce the reading methods of single-phase watt-hour meter and three-phase watt-hour meter to help readers better understand the use of watt-hour meters.

Reading of single-phase watt-hour meter

The reading of single-phase watt-hour meter is very simple, just read the numbers directly. For example, subtract 5 186 from 5376 last month to get 550 degrees. You used 550 kwh of electricity this month. In addition, the watt-hour meter is also marked with the current range, such as 1.5(6)A, 2.5( 10)A, etc. , indicating the minimum current and maximum current of the watt-hour meter.

Reading of intelligent watt-hour meter

The reading of smart watt-hour meter is more convenient, and the single-phase smart watt-hour meter will directly display the total power and remaining power without calculation. If it is an IC card meter, there is only one LED display with a little red dot on it. Little red dot jumps to the total power, which is the total power, and jumps to the residual power, which is the residual power.

Reading of three-phase watt-hour meter

Three-phase watt-hour meters are divided into three-phase three-wire system and three-phase four-wire system. There are two reading methods on the dial of three-phase watt-hour meter commonly used by industrial power users: one is no decimal reading without red number box at the last position, and the other is one-degree electric reading with the last position of 1.