Three phase electronic prepaid electricity meter

The three-phase electronic prepaid electricity meter is a new type of instrument manufactured using imported specialized large-scale integrated circuits, 16 bit A/D conversion, digital multipliers, digital sampling processing technology, and SMT process.

Working principle of three-phase electronic prepaid energy meter

The electric energy meter obtains voltage sampling signals from the voltage divider, current sampling signals from the current transformer, voltage current product signals from the multiplier, and then generates a counting pulse with frequency proportional to the product of voltage and current through frequency conversion.

1. This product complies with the requirements of GB/T17215-2002 "Static AC Active Energy Meters for Class 1 and 2" and GB/T18460.3-2001 "Prepaid Energy Meters" standards. Technique, strong overload capacity, good anti-interference ability, magnetic holding relay, effective control of power on and off

2. Preventing electricity theft; It has a preventive function against electricity theft methods such as short circuits, reverse connections, and neutral grounding;

3. Low power consumption: it adopts software and hardware reset monitoring circuit, the third mock examination redundancy error correction processing technology, with strong overload capacity, good anti-interference, magnetic holding relay, and effective control of power on and power off.

4. High accuracy: using foreign specialized measurement chips, with stable errors and good linearity, without the need for calibration;

5. Alarm function: If the remaining battery level is lower than the alarm level, the alarm light will flash to remind you to purchase electricity. Alarm for missing or wrong phase;

5. Strong resistance to damage; The booth has been damaged by someone, but the internal measurement and control are not affected;

6. One table, one card; The electric card is only used for one meter after multiple random encryption to prevent technical electricity theft;

7. Automatic power-off; The remaining battery level is zero, power is cut off, and inserting the card cannot restore power supply,

8. Data feedback: IC cards can transmit information such as the total electricity consumption (purchased) of the meter back to the management machine, allowing for timely monitoring of electricity usage;

9. Loop display; After inserting the card or pressing the button, the data will be displayed in a loop, including total electricity consumption, total purchased electricity, and remaining electricity;

10. Long life: Made using advanced SNT technology, the main components are selected from internationally renowned long-life devices.

The requirements of the 17215-2002 "Static AC Active Energy Meter for Class 1 and 2" and GB/T18460.3-2001 "Prepaid Energy Meter" standards.