Technical Specifications
The RE-431 Series is a highly accurate, fully integrated, multiphase energy and power quality monitoring DIN-Rail mount device.
Superior analog performance, powerful AI acceleration and reliable security features enable accurate energy monitoring and power quality analysis.
The RE-431 Series offers complete power monitoring capability by providing total as well as fundamental measurements on rms, active, reactive, and apparent powers and energies.
Advanced features such as dip and swell monitoring, frequency, phase angle, voltage total harmonic distortion (VTHD), current total harmonic distortion (ITHD), and power factor measurements enable implementation of power quality measurements. The ½ cycle rms and 10 cycle rms/12 cycle rms, calculated according to IEC 61000-4-30 Class S, provide instantaneous rms measurements for real-time monitoring.
The RE-431 Series offers an integrated flexible waveform buffer that stores samples at a fixed data rate of 32 kSPS or 8 kSPS.
| General Specifications | Type of network | 1P + N 2P + N 3P + N WYE(Y) | |
| Sampling rate | 8 kSPS | ||
| Measurements | Total and fundamental Active Power (W), Reactive Power (VAR), Apparent Power (VA), Active Energy (kWh), Reactive Energy (kVARh), and Apparent Energy (kVAh) Total and fundamental IRMS, VRMS Total harmonic distortion (THD) Power factor Supports active energy standards: IEC 62053-21 and IEC 62053-22; EN50470-3; OIML R46; and ANSI C12.20 Supports reactive energy standards: IEC 62053-23, IEC 62053-24 | ||
| Display | 2.0" active matrix TFT, 320 pixels x 240 pixels, 65K colors | ||
| Real Time Clock | NTP syncronized. Time accuracy: ± 1 ppm @ 25°C | ||
| Data and Event logging | Online and onboard realtime data and event logging |
| Power Inputs | Number of Inputs | 2 Inputs, 1 Phase and Neutral | |
| Voltage Range | 90-300VAC | ||
| Frequency Range | 50-60Hz | ||
| Max. Current | 0.15A | ||
| Overcurrent Protection | Internal Fuse (1A 350V AC) | ||
| Overvoltage Protection | Internal MOV+GDT |
| Voltage Inputs | Number of Inputs | 4 Inputs, 3 Phases and Neutral | |
| Max. Voltage Input | 300V L-N | ||
| Measurement Category | 300V CAT III | ||
| Overcurrent Protection | Internal Fuse (1A 350V AC) | ||
| Overvoltage Protection | Internal MOV+GDT |
| Current Inputs | Number of Inputs | 4 Inputs, 3 Phases and Neutral | |
| Inputs Type | Current Transformers | ||
| Max. Current Input | 0.1A | ||
| Current Transformers | 75A : 0.1A Ø 10mm 150A : 0.1A Ø 16mm 300A : 0.1A Ø 24mm 600A : 0.1A Ø 36mm 1200A : 0.1A Ø 90mm 2500A : 0.1A Ø 120mm |
| Accuracy | Voltage | 0.2% | |
| Power factor | ±0.001 | ||
| Active/Apparent Power | Class 0.2 | ||
| Reactive power | Class 0.2 | ||
| Frequency | 0.05% from 45 to 65 Hz | ||
| Active energy | Class 0.2 | ||
| Reactive energy | Class 0.2 |
| Power Quality Analysis | Class | IEC 61000-4-30 Class S | |
| Measurement | VRMS ½, IRMS ½ rms voltage refreshed each half cycle 10 cycle rms/12 cycle rms Voltage Unbalance Current unbalance Zero crossing Phase angle | ||
| Anomalies Detection | Dip and Swell monitor Event waveform capture Zero-crossing timeout | ||
| Line Frequency | One per phase | ||
| Harmonics Analysis | Individual harmonic magnitudes on voltage and current, up to the 63rd harmonic | ||
| Harmonics Distortion | Voltage total harmonic distortion (VTHD) Current total harmonic distortion (ITHD) | ||
| Waveform | Waveform capture on all Voltage and Current inputs (including Neutral) |
| Mechanical | Dimensions (LxWxH) | 70mm x 91mm x 59mm | |
| DIN-Rail Size | 4M | ||
| Weight | 0.210kg | ||
| IP degree of protection | IP40 front panel: conforming to IEC 60529
IP20 body: conforming to IEC 60529 |
| Safety | General | CE as per IEC 61010-1 (double insulation) | |
| Pollution Degree | 2 | ||
| Overvoltage Category | OVCIII (2000m) | ||
| Operating Altitude | Up to 2000m | ||
| RS485 Insulation | 5.7 kV Reinforced insulation |
| Environment | Operating temperature | -40 ºC to 65 ºC | |
| Humidity rating | 5 to 95% RH at 50 ºC (non-condensing) | ||
| Pollution degree | 2 |
| Communication | Wi-Fi | 2.4 GHz Wi-Fi (802.11 b/g/n) | |
| Bluetooth | Bluetooth® 5 (LE) | ||
| Modbus | Modbus TCP/IP Modbus RTU (optional) | ||
| MQTT | MQTT Client MQTTs Client (over TLS) | ||
| LoRaWAN® | LoRaWAN® 1.0.3 Class C specification compliant Supported bands: EU433, CN470, IN865, EU868, AU915, US915, KR920, RU864, and AS923-1/2/3/4 |
| Cybersecurity | Data Encryption | MQTT data transfer over TLS | |
| Flash Encryption | AES-XTS-based flash encryption | ||
| User Access | Strong password enforcement | ||
| Events logging | Security events logging via Syslog | ||
| Secure Boot | RSA-based secure boot | ||
| Services | Disable Unused Services and ports | ||
| Wi-Fi | Protected Management Frames (PMF) support |
The LIC-RE431-D-X license is required to enable advanced features of the RE-431-D device, a high-precision three-phase analyzer with Wi-Fi communication.
This license follows a Right-to-Use (RTU) model valid for 12 months, and unlocks the following additional capabilities:
| Licensing | Feature | Without license | With LIC-RE431-D-X license | |
| Power Quality Analysis | - | Enabled (THD, harmonics, unbalance) | ||
| Sampling Frequency | - | 8,000 samples/second (8 kSPS) | ||
| Network Event Analysis | - | Event and disturbance logging | ||
| Extended Datalogging | Basic (up to 12 months of history with hourly granularity) | Advanced (unlimited history with minute-level granularity) |
*License Model
Product code: LIC-RE431-D
Duration: 12/24/36/48/60 months (renewable)
⚠️ Without an active license:
The device operates in basic mode, enabling only standard three-phase monitoring and Wi-Fi transmission of main data (V, I, P, Q, S, cosφ).
