Overview
The APM810 is the power quality analysis version of the APM series. Building upon 0.5 class full electrical measurement, it adds powerful harmonic analysis capabilities. It measures 2nd to 63rd individual harmonics, total odd/even harmonics, voltage crest factor, telephone influence factor (TIF), and current K-factor, helping users deeply diagnose grid pollution. The APM810 also retains complete functions such as full electrical measurement, four-quadrant energy, demand analysis, extreme value statistics, and event logging, and supports modular expansion of I/O, analog, communication, and temperature modules. It is the ideal choice for industrial sites, data centers, and commercial buildings requiring harmonic monitoring and mitigation.
Highlight
Advanced Power Quality Analysis
- 2nd-63rd individual harmonic measurement
- Total odd/even harmonics for V & I
- Crest factor, TIF, K-factor analysis
0.5S Class Accuracy
- IEC 62053-22 Class 0.5S active energy
- 0.5 class voltage/current measurement
- Multi-tariff (4 rates, 14 periods)
Comprehensive Data Logging
- 128 event logs, 66 alarm types
- Min/max recording with timestamps
- SD card for mass storage
Modular & Flexible Design
- Up to 3 expansion modules
- I/O, analog, communication options
- Temperature & humidity monitoring
Function
| Measurement | Metering & Logging | Others |
| Voltage (Phase/Line) | 4-Quadrant Energy (Import/Export, Active/Reactive) | 2x DI + 2x DO (Built-in) |
| Current (Per Phase/Neutral) | 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 | 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, Harmonics) | – MCE: Ethernet (Modbus-TCP/HTTP) |
| 2nd-63rd Harmonics (V & I) | Harmonic Data Logging (Min/Max, Individual) | – MCP: Profibus-DP |
| Total Odd/Even Harmonics | – MPNET: Profinet | |
| Voltage Crest Factor | – MTN/MTP/MTH: Temperature/Humidity modules | |
| Telephone Influence Factor (TIF) | ||
| Current K-Factor |
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 0.5 |
| Accuracy | Active Energy: Class 0.5S |
| Reactive Energy: Class 2 | |
| Harmonic Accuracy | 2nd-42nd: ±1%; 43rd-63rd: ±2% (at 50Hz) |
| 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 power quality analysis capability. The APM810 adds advanced functions including 2nd-63rd individual harmonic measurement, total odd/even harmonics, voltage crest factor, telephone influence factor (TIF), and current K-factor, making it suitable for applications requiring in-depth harmonic diagnosis. The APM800 only provides basic unbalance and phase angle measurements.
According to IEC 61557-12, accuracy is ±1% for 2nd-42nd harmonics and ±2% for 43rd-63rd harmonics (at 50Hz).
In the measurement interface, press ▶ until “THD” appears, then press Enter to enter the harmonic menu. Select “UH THD” or “IH THD” and press Enter again to view the 2nd-63rd individual harmonic content for each phase voltage or current.
Yes. If the MLOG expansion module (with SD card) is installed, the meter can periodically log harmonic data, including total harmonics, odd/even harmonics, and 2nd-63rd individual harmonics with min/max values for each phase.
TIF is used to assess the interference level of harmonics on telephone communication lines; K-Factor measures a transformer’s capability to handle harmonic currents, helping select appropriate transformer ratings or assess overload risks for existing transformers.
Summary
As the power quality analysis expert of the APM series, the APM810 integrates 0.5S class energy metering with comprehensive harmonic analysis functions. It not only performs routine electrical monitoring and cost accounting but also deeply reveals harmonic pollution in the grid, providing a complete view from 2nd to 63rd harmonics, along with professional indicators such as TIF and K-Factor. Modular design and multi-protocol communication support allow flexible adaptation to various application scenarios. For customers needing to proactively manage power quality and prevent harmonic-related failures, the APM810 is an indispensable monitoring tool.
