The single phase smart prepayment meter is a Class 1.0 active energy metering device compliant with IEC international standards, suitable for single-phase two-wire power systems. Integrating functions such as energy metering, prepayment management, load control, and event logging, this meter supports communication via optical port and RF module, and displays key data through an LCD screen. It is an ideal choice for power supply enterprises to achieve efficient electricity management.
Technical Parameters
|
Parameter Name |
Technical Requirements |
|
Rated Voltage (Un) |
230V |
|
Basic Current (Ib) |
5A |
|
Maximum Current(Imax) |
60A |
|
Accuracy Class |
Class 1 for active energy |
|
Starting Current (Ist) |
20mA (4‰Ib) |
|
Pulse Constant |
1000 imp/kWh |
|
Operating Frequency |
50Hz |
|
Operating Temperature |
Normal range: -25℃~+55℃ (3K6); Limited range: -40℃~+70℃ (3K7) |
|
Relative Humidity |
≤95% (non-condensing) |
|
Insulation Class |
Class II |
|
Anti-interference Performance |
Fast transient burst: 4kV; Electrostatic discharge: 8kV (contact)/15kV (air) |
|
Electrical Strength |
AC voltage: 4kV (50Hz, 1 minute); Impulse voltage: 6kV |
Core Functions
1. Energy Metering
Active Energy: Supports measurement of import, export, and absolute active energy (Absolute energy = |Import energy| + |Export energy|). Data can be displayed on the LCD or read via software.
Reactive Energy (Optional): Measured in four quadrants, supporting accumulation of import and export reactive energy (Import = |Q1| + |Q2|; Export = |Q3| + |Q4|).
2. Real-time Monitoring and Statistics
Instantaneous Values: Real-time measurement and recording of voltage, current, power factor, frequency, etc., with support for 1-minute/60-minute average, maximum, and minimum value statistics.
3. Prepayment Management
Recharge Function: Recharge via 20-digit encrypted TOKEN, recording the last 50 valid recharge records. Supports querying recharge amount, time, and TOKEN.
Short Code Query: Enter specific codes (e.g., 800 for total active energy, 803 for remaining credit) to quickly obtain key data.
Emergency Overdraft (Optional): When balance is 0, enter code "811" to enable preset overdraft limit.
4. Load Control and Safety Protection
Overload Protection: Automatically disconnects the relay after exceeding the threshold for 30 seconds, with reconnection attempt after 30 seconds; delays reconnection by 30 minutes after 5 overloads.
Anti-fraud Function: Detects anomalies such as cover opening, magnetic interference, and current reversal, disconnects the relay after 4-30 seconds, and logs events.
Event Logging: Stores 100 records of power quality, relay control, fraud detection, and standard events (e.g., power on/off, low battery), including time and occurrence count.
5. Display and Communication
LCD Display: Automatically scrolls to show remaining credit, cumulative energy, instantaneous voltage/current, etc., with 2 decimal places precision.
Communication Ports: Optical port (compliant with IEC62056-21, baud rate 300-9600bps) and RF module (communicates with CIU).
Application
This single phase smart prepayment meter can be used in various scenarios, such as residential communities, commercial premises, industrial areas, medical institutions, etc. The prepayment function can well provide recharge convenience for property owners and users, solving the difficulties in electricity recharge.
Storage and Transportation
Transportation: Avoid severe impact;
Storage: Keep in original packaging, store in an environment with temperature -45℃~+70℃, relative humidity <85%, and free of corrosive gases;
Note: The product is a fixed-type instrument with no user-adjustable parts. Do not open the enclosure without authorization.
Quality Assurance
The meter is manufactured in compliance with IEC and related international standards, undergoing rigorous performance and reliability tests to ensure accurate metering and stable operation. Complete technical documentation and user support are provided.
