Overview
The Inventory Master’s Three-Phase DIN Rail Smart Power Meter with LCD Display is a compact rail-mounted meter featuring three-phase electric parameter measurement, 2 to 31st harmonic analysis, and time statistics. This device uses Modbus-RTU via RS485 interface by default, with optional WiFi, 4G, or LoRa communication. It can expand to 2-way digital input, 2-way relay output, 4-way temperature measurement, and 1-way residual current measurement. This product is highly accurate, reliable, and easy to install, ideal for system integration projects, wire line modifications, and installations in limited or constrained spaces.
Features
- Measures three-phase voltage, current, power, power factor, and frequency
- Monitors power quality including harmonics and THD
- Over-limit and fault alarms with record storage
- Multi-rate power consumption tracking
- Event and consumption record keeping
Technical Specifications
| Phase | Three Phase |
| Measuring Energy Range | 0 to 9999999.9 kWh |
| Accuracy Class | 0.5S (Active Energy), 2.0 (Reactive Energy) |
| Display Type | Digital LCD Display |
| Rated Voltage | 220V / 380V |
| Rated Current | 5A (0 to 6A) |
| Frequency | 45 to 65Hz |
| Harmonic Analysis | 2 to 31st |
| Communication | RS485 Modbus-RTU, WIFI, 4G, LoRa, MQTT, 1200 to 38400bps |
| Input Voltage Range | 57.7/100V, 220/380V, 380/660V |
| Overload Voltage | Sustained 1.2 times rated, Momentary 2 times rated (1s) |
| Overload Current | Sustained 1.2 times rated, Momentary 20 times rated (1s) |
| Power Supply Working Range | AC: 85 to 265V, DC: 80 to 300V |
| Consumption | < 0.5 VA per phase |
| Altitude | < 3000 m |
| Operating Temperature | -13 to +158 °F (-25 to +70 °C) |
| Storage Temperature | -22 to +167 °F (-30 to +75 °C) |
| Humidity | 5% to 95% No condensation |
| Dimensions | 2.95 in x 3.46 in x 2.91 in (75 x 88 x 74 mm) |
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