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OM-ACM-A811
The three-phase power meter's technical performance fully complies with the relevant technical requirements of IEC 62053-21 national standard for Class 0.5S three-phase active energy meters. It can accurately measure various electrical parameters such as voltage, current, power, power factor, energy, and total energy in three-phase AC power grids with a rated frequency of 50Hz or 60Hz. The power meter is equipped with 1 RS485 communication interface and MODBUS-RTU communication protocol, facilitating connection with various AMR systems. It features good reliability, small size, light weight, elegant appearance, and easy installation.
ØCollecting multiple electrical parameters of three-phase AC power, including voltage, current, power, energy, etc., ensuring comprehensive information.
ØEquipped with optional leakage current detection function for line safety.
ØUtilizes dedicated measurement chips and effective RMS measurement method for high measurement accuracy.
ØIncludes 1 RS-485 communication interface.
ØCommunication protocol follows standard Modbus-RTU, ensuring good compatibility and easy programming.
Øcommunication interface is equipped with ESD protection circuit.
ØWide operating voltage range of AC 80 to 240V.
ØUses industrial-grade chips, built-in watchdog, and comprehensive lightning protection and anti-interference measures to ensure reliability.
ØHigh isolation voltage, withstand voltage up to AC: 2000V.
ØOptional single-coil core type or split-core type current transformers of different specifications for convenience and ease of use.
| Project | Description |
| 1. Three-Phase AC Input | |
| Voltage Range | Optional 100V, 220V, 380V, etc. |
| Current Range | Optional 5A, 20A, 50A, 100A, 200A, 300A, 400A, 500A, etc. External connection options for opening current transformers are available. |
| Signal Processing | Utilizes dedicated measurement chips, 24-bit AD sampling. |
| Overload Capacity | Sustainable 1.2 times the range; instantaneous (<200mS) current up to 5 times, voltage up to 2 times the range without damage. |
| Input Impedance | Voltage channel > 1 kΩ/V; current channel ≤ 100mΩ. |
| 2. Communication Interface | |
| Interface Type | Provides 1 RS-485 interface |
| Communication Protocol | MODBUS-RTU protocol |
| Data Format | Software configurable, "n,8,1", "e,8,1", "o,8,1", "n,8,2". |
| Communication Rate | RS-485 communication interface baud rate can be set to 1200, 2400, 4800, 9600Bps; factory default baud rate is 9600bps, with data format "n,8,1". |
| Communication Data | Includes voltage, current, power, energy, and other electrical parameters. |
| Measurement Accuracy | Voltage, Current, Power: ±1.0%; Active Energy: Class 1. |
| Isolation between DO/RS-485 interface and AC power supply, voltage input, and current input; withstand voltage of 2000VAC. | |
| 3. Power Supply | |
| Supply Range | 12 to 15VDC |
| 4. Operating Environment | |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% to 95%, non-condensing (at 40°C) |
| Altitude | 0 to 3000 meters |
| Environment | Suitable for locations without explosive, corrosive gases, conductive dust, significant shaking, vibration, or impact. |
| 5. Temperature Drift | ≤100ppm/℃ |
| 6. Installation Method | 4P DIN rail mounting |
| 7. Module Dimensions | 70*90*57mm |
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