1.overview

The AT28E-IC prepaid smart energy meter with IC card has multiple anti-theft functions; It has the characteristics of low starting current, no creep, wide load, low power consumption, beautiful appearance, small size, light weight, and easy installation; It has multiple functions such as energy metering, load control, and user information management. This meter is an ideal product for the current reform of the electricity system, achieving the commercialization of electricity, solving the difficulty of charging fees, and regulating the load status of the power grid. Its various performance indicators comply with all technical requirements for electronic single-phase prepaid energy meters in GB/T17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters" and GB/T18460-2001 standards. It can also be used as a control for malicious loads in student apartments.

All products are self-developed and produced by our company, supporting customized functions. Please contact our company for details.

2.Main functions and features
Accurate measurement of single-phase AC active energy;
◆ One table, one card, multiple encryption, with good anti-counterfeiting properties; Buy electricity first, use it later, and it will automatically shut down after use; After each new purchase of electricity, users can only insert their own meter to input the valid electricity once; Even if an illegal user steals the IC card password, copying the IC card cannot be used;
When the remaining power in the meter reaches the alarm threshold, the meter can be set to automatically power off when there is no load or light load; At this point, the user can restore power by inserting the card until the remaining battery level reaches zero and the power is completely cut off;
Large capacity magnetic holding relay, low power consumption, high reliability;
◆ Overload automatic power-off, protecting the electricity meter and circuit; Power supply can be automatically restored within 4 minutes after load reduction;
The purchase of electricity cards automatically retrieves electricity usage information, making it convenient for administrators to grasp the user's electricity usage situation;
Under normal circumstances, the LCD screen displays the total electricity consumption. When the remaining electricity reaches the alarm threshold, the remaining electricity consumption is displayed. Inserting the power purchase card will display information such as "total electricity consumption", "remaining electricity consumption", "purchased electricity consumption", "power limit", "purchased electricity times", "meter number", etc;
◆ Comes with initialization cards, power purchase cards, reset cards, inspection cards, replacement cards, function setting cards, etc. for easy maintenance by management departments;
Multiple backups of electricity consumption data and purchase data are added with verification and error correction processing to ensure the correctness and reliability of the data;
Equipped with a pulse output interface, it is easy to perform error calibration;
The supporting IC card power sales management system has complete functions such as power sales management and power consumption monitoring;
◆ Optional malignant load recognition function, which can automatically identify prohibited electrical appliances specified by the management department. The use of prohibited electrical appliances can automatically cut off power. It has a malignant load power setting function, which can set different limited power according to requirements. The conventional one is 300W. This function can be selected to turn off by inserting a card;
After the malignant load is removed, it can automatically restore power supply;
When the remaining power is insufficient, humanized management can choose to power off with load or without load;
Optional RS485 communication interface, communication protocol can be selected as Modbus RTU or DLT645-1997 or DLT645-2007, and other functions can be added according to user needs.
3.Specification
Execution standards: GB/T17215.321-2008, GB/T18640-2001
Rated voltage: AC220V
Working voltage range: 0.8Un~1.2Un
◆ Frequency: 50Hz/60Hz
Calibration current: 1.5 (6) A, 2.5 (10A), 5 (20) A, 10 (40) A, 15 (60) A, 20 (80) A
Accuracy: Level 1.0
◆ Starting current: ≤ 0.4% Ib
◆ Stealth: equipped with anti creep logic circuit
Environmental working conditions: -20 ℃ to+55 ℃, relative humidity not exceeding 90% (temperature+25 ℃)
Power consumption: ≤ 1.5W
◆ Dimensions: 165mm × 116mm × 66mm
Weight: 0.8kg
4.Wiring diagram
4.1 Excluding Communication Wiring Diagram (AT28E-IC)

4.2 Including Communication Wiring Diagram (AT28E-IC-T)


5.External dimensions


6.Meter display interface

7. IC card energy meter management system software

The software and hardware equipment of the IC card energy meter management system includes: prepaid electricity meter, IC card reader/writer, IC card, and computer terminal management system;

This system software is a sales management software developed for prepaid energy meters, intended for use by management departments. It is fully functional, user-friendly, and easy to operate. Its main functions include: login management, daily business, user management, report query, settings and maintenance, IC card management, help and other functional modules;

The system has strong statistical analysis capabilities and provides comprehensive statistical analysis data; The system has strict operation permission management.