The reading of three-phase four-wire watt-hour meter can be directly seen in the reading area of its watt-hour meter. When confirming the actual power consumption, it is necessary to calculate the actual power consumption according to whether the incoming line passes through the transformer. If there is a transformer, you need to multiply the reading by the multiplier of the transformer to calculate the actual power consumption.

White characters on a black background indicate the amount of electricity flowing through the meter when looking at it, which is 3390 degrees in the figure, that is, the amount of electricity flowing through the meter in history is 3390 degrees (kWh). If you subtract this reading from the number recorded in the last reading, such as a month ago (for example, the last reading was 3300), then 3390-3300=90 degrees is this month (between the last reading and this reading).

I. Electric meter

1, smart meter

A string of numbers on the meter screen will directly display the integer and decimal of the meter reading, and the data displayed on the LCD screen may be different due to different meter models; You can press the wheel display button next to the screen to switch the display interface, and check whether the data displayed on the LCD screen is "current total power" or "current positive total active power", that is, the accumulated power consumption of the current electricity meter.

2. Mechanical ammeter

You can check whether there is a black-red separator in the meter reading, where the black part is an integer and the red part is a decimal; If there is only a black part, the current cumulative power consumption is 430764 degrees, and if there is a red part, the current cumulative power consumption is 43076.4 degrees. If it is necessary to calculate the actual electricity consumption in a certain electricity consumption period, the electricity consumption = current meter reading number-last meter reading number. If your meter is equipped with a transformer, you need to multiply it by the ratio of the transformer.

Second, the use of smart meters

1. After installing the smart meter, you need to pay the electricity fee to the power supply company if you want it to run normally. If it is the first time to open an account to buy electricity, 20 yuan will be deducted automatically.

2. After paying the electricity bill, there will usually be a power purchase card with a chip in it. If you want to use a smart meter, you need to insert this power purchase card into the card slot of the meter. It should be noted that it should be inserted as tightly as possible to prevent poor contact. When the words "successful card reading" are displayed on the display screen of the electricity meter, the purchased electricity fee will be charged into the electricity meter and then it can be used normally.

3. If there is a trip in the process of using the smart meter, you can go and see if the electricity bill is enough. If this is the case, you must pay the electricity bill in time.