Main technical features of RF card type multi-user smart meter:

1. Electricity sales function: Users can use their card to purchase electricity at the electricity purchase management office, and then swipe their card at the designated reader/writer to complete the electricity purchase operation;

2. Pre set power function: Write pre set power data in the power purchase management area, and swipe the designated RF card reader to preset the specified power for the user;

3. Electricity parameter setting function: The user's electricity parameters can be written into the purchased electricity or preset card through the upper computer, including: the user's household number (or room number) displayed on the electricity meter;

4. * * Maximum load power limit: Power outage due to overload;

5. Alarm battery level: When it is less than the alarm battery level, the user information display flashes;

6. Query function: After successfully purchasing electricity or pre setting the battery level, the user card will automatically change to a query card. The user can swipe the card at the designated RF card reader to display the current remaining battery level information;

7. Stronger data security to prevent users from cracking and stealing electricity.

8. The RF card reads data through induction, without mechanical friction, with low failure rate and long service life.

9. The RF card reader can be placed in the same distribution box as the electricity meter or installed independently. The reader can be installed in a suitable position according to the convenience of the user's card swiping.

System composition equipment:

The RF card sales system consists of management software, computer, RF card sales motor, RF card, RF card reader/writer, and prepaid multi-user energy meter. Each RF card reader/writer is connected to the energy meter through a 485 bus (one RF card reader/writer is connected to one electricity meter).

Technical parameters:

Rated voltage: 3 × 220/380V;

Working voltage range: AC180-260V;

Calibration current: 10 (50) A;

Pulse constant: 3200 imp/kWh;

Accuracy level: 2.0 level;

Measurement division: 0.1 degrees;

Data protection: Data will be retained for more than 10 years after a power outage.

External dimensions: