Overview
The APM801 is the high-accuracy version of the APM series, featuring 0.2S class energy metering designed for applications requiring precise energy accounting and revenue metering. Building upon all the functions of the APM series—including full electrical measurement, four-quadrant energy, demand analysis, and extreme value statistics—it enhances voltage and current measurement accuracy to Class 0.2 and active energy accuracy to Class 0.2S, fully complying with IEC 62053-22 international standards. Its modular design supports flexible expansion of I/O, analog, communication, and temperature monitoring functions, meeting various needs from simple monitoring to complex control. The APM801 is the ideal choice for substations, power plants, and high-energy-consuming enterprises for accurate cost accounting and energy efficiency management.
Highlight
0.2S Class High Accuracy
- IEC 62053-22 Class 0.2S active energy
- 0.2 class voltage/current measurement
- Ideal for revenue and submetering
Modular & Flexible Design
- Up to 3 expansion modules
- I/O, analog, communication options
- Temperature & humidity monitoring
Comprehensive Data Logging
- 128 event logs, 66 alarm types
- Min/max recording with timestamps
- SD card for mass storage
Multiple Communication Protocols
- Modbus, Profibus, Ethernet
- Profinet & dual RS485 options
- Seamless SCADA/EMS integration
Function
| Measurement | Metering & Logging | Others |
| Voltage (Phase/Line) Class 0.2 | 4-Quadrant Energy (Import/Export, Active/Reactive) | 2x DI + 2x DO (Built-in) |
| Current (Per Phase/Neutral) Class 0.2 | Multi-Tariff Energy (4 tariffs, 14 periods) | Supports up to 3 Expansion Modules: |
| Power (Per Phase/Total, Active/Reactive/Apparent) | 12-month Historical Tariff Data | – MD82: 8DI+2DO |
| Power Factor (Per Phase/Total) | Demand & Max Demand (Current/Power) with Timestamps | – MA84: 8AI+4AO |
| Frequency Class 0.02 | Extreme Value Logging (Voltage/Current/Power) with Timestamps | – MLOG: SD Card for Data Logging |
| Voltage/Current Unbalance | Event Recorder (128 DIDO, 66 Alarm Types) | – MCM: Extra RS485 (Master/Slave) |
| Phase Angle (V&I) | SD Card Data Logging (Alarms, Parameters, Energy) | – MCE: Ethernet (Modbus-TCP/HTTP) |
| Pulse Output (Programmable) | – MCP: Profibus-DP | |
| – MPNET: Profinet | ||
| – MTN/MTP/MTH: Temperature/Humidity modules |
Specification
| Parameter | Specification |
| Input Voltage | Rated: AC 100V, 110V, 400V, 690V (L-L) |
| Overload: 1.2× rated (continuous); 2× rated for 1s | |
| Consumption: <0.5VA per phase | |
| Input Current | Rated: AC 1A, 5A |
| Overload: 1.2× rated (continuous); 10× rated for 1s | |
| Consumption: <0.5VA per phase | |
| Measurement | Voltage/Current: Class 0.2 |
| Accuracy | Active Energy: Class 0.2S (IEC 62053-22) |
| Reactive Energy: Class 2 | |
| Pulse Output | Programmable pulse constant: 8000 (1A), 4000 (5A) imp/kWh default; user settable (0-9999, *100) |
| Auxiliary Power | AC/DC 85～265V or AC/DC 115～415V (P2 option) |
| Consumption: ≤15VA (main unit) | |
| Operating | Temperature: -20℃～+65℃ |
| Environment | Humidity: ≤95% non-condensing |
| Altitude: ≤2500m | |
| Communication | Standard: 1x RS485 (Modbus-RTU, DL/T645-2007) |
| Interfaces | Optional via Expansion Modules: Extra RS485, Ethernet, Profibus-DP, Profinet |
| Digital I/O | Built-in: 2x DI (dry contact) + 2x DO (Relay, AC 250V/3A, DC 30V/3A) |
| Expansion | Supports up to 3 modules (MD82, MA84, MLOG, MCM, MCE, MCP, MPNET, MTN, MTP, MTH) |
| Dimensions | Main unit: 96mm × 96mm × 92mm (panel cutout: 92mm × 92mm) |
| Mounting | Panel mount (with brackets) |
| Protection Grade | Front panel: IP52 |
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FAQ
The core difference lies in accuracy. The APM801 enhances voltage/current measurement accuracy to Class 0.2 and active energy accuracy to Class 0.2S, fully complying with IEC 62053-22, making it suitable for applications requiring precise cost accounting and revenue metering. Additionally, the pulse constant on the APM801 is programmable, while it is fixed on the APM800.
Enter “Settings” -> “Puls” menu on the panel, input the desired pulse constant value (range 0-9999). The actual pulse constant is the set value × 100. If set to 0, the default values are used: 8000 imp/kWh for 1A input, 4000 imp/kWh for 5A input.
Up to 3 expansion modules can be connected, subject to module combination rules: MCP/MCE/MPNET cannot be duplicated, and some modules have installation sequence requirements.
In the measurement interface, press ▶ until “SOE” appears, then press Enter to view the last 128 event records. If an SD card module is installed, data is automatically synchronized to the SD card.
Summary
As the high-accuracy version of the APM series, the APM801 perfectly combines 0.2S class energy metering with modular flexible design. It not only inherits the comprehensive measurement and recording functions of the APM series but also meets demanding application requirements such as revenue metering and cost allocation with its higher accuracy. Programmable pulse output, multi-protocol communication support, and rich expansion modules make it suitable both as an independent high-accuracy metering point and for seamless integration into large EMS or SCADA systems. For projects pursuing data accuracy and long-term investment value, the APM801 is a trustworthy choice.
