What is the working principle of smart meters?

Smart meter is a kind of modern equipment for measuring electricity consumption, which integrates various high-tech technologies. Electricity will generate current and voltage, and the converter and chip inside the smart meter will collect the current and voltage flowing through the circuit, and then the central processor will analyze and process the collected data to calculate the positive and negative directions, peak and valley values, etc. , the final calculated power consumption will be displayed on the display screen.

How to maintain smart meters

1, the smart meter must be a household meter, which can prevent the abnormality when inserting the card. You can turn off the switch in the meter box first. If your own salesperson turns it off, it means that the meter box is your own.

2. Pay the electricity fee in advance after installing the smart meter for immediate use. If you need to recharge the meter, just insert the card into the card slot along the arrow direction and take it off after reading it successfully.

3. If the smart meter is powered off, it means that the card should be used for operation. Even if the blood glucose meter is powered off, its internal components are still running. Be careful at this time. ICU card must be kept well to prevent external interference, otherwise it will affect future operation if it is damaged.

How to deal with the trip of smart meter: First, check whether the amount on the meter is 0, if so, it means that it needs to be recharged. If the balance on the meter exceeds 0, the indicator light is always on, and it is still invalid after restarting, then contact the property manager and ask them to repair it.

How does a smart meter read?

1. Ordinary straight single-phase smart meters and three-phase smart meters can directly read numbers, and the last reading is subtracted, which is the electricity consumption at this stage. The incoming wire of the direct current meter is relatively thick, and it is not connected with the transformer after careful observation.

2. The three-phase ammeter is connected through a current transformer. There are 65,438+00 wires connected to the ammeter. It is necessary to observe the current ratio of the connected current transformer, which is listed on the nameplate of the current transformer. Are marked with a number ratio of 5, such as 100/5 150/5. The number read on the ammeter multiplied by the current ratio is the measured electric quantity, and the accurate number should be added.

3. Single-phase ammeter measures the quantity of three-phase electricity. The electricity reading method is directly connected to the ammeter, and the number on the ammeter is multiplied by 3. If the ammeter is connected through a transformer, you need to read the number of the ammeter multiplied by the current multiple of the transformer and then multiplied by 3.

4. Smart meters have only one LCD screen. If it is single phase, the total power and residual power will be displayed directly, which can be read directly.

If it is an IC card meter, and only the LED shows a single display card meter, then there will be a little red dot on the meter, and the red dot will be used all the time when jumping to General, and the rest of the time will be left.

If it's a dual graphics card watch, you can look at the top or bottom.

If it is the direct reading of three-phase prepayment meter, the reading of mutual inductance meter is multiplied by the transformation ratio.