Janitza UMG 800 UL Energy Analyser, Class 0.2S, Ethernet, RS485, DIN Rail, 8DI/4DO, 256MB 5238001

The Janitza UMG 800 UL stands apart from conventional energy meters by combining Class 0.2S active energy accuracy with comprehensive power quality analysis—including harmonics up to the 63rd order, transient detection, and flicker—in a single DIN-rail module. Unlike basic analysers that only log consumption, this device integrates Ethernet and RS485 communication, eight digital inputs, four digital outputs, and 256 MB of onboard memory, making it a complete energy monitoring and control hub for industrial and commercial installations.

Highlights

• Class 0.2S active energy accuracy (IEC 62053-22) and Class 0.5S reactive energy (IEC 62053-24)
• Dual communication: Ethernet (Modbus/TCP, BACnet/IP, HTTP, FTP, SNMP, NTP) and RS485 (Modbus/RTU, BACnet/MSTP)
• Extensive power quality analysis: harmonics up to 63rd, unbalance, sag/swell, transients, flicker
• 8 digital inputs and 4 digital outputs for versatile integration
• 256 MB internal flash memory for long-term data logging
• Wide power supply range: 95-240V AC or 135-340V DC
• UL Listed and CE certified, CAT III 600V / CAT IV 300V measurement category

In daily use

Installed on a standard DIN rail (6 TE width), the UMG 800 UL continuously monitors voltage, current, power, energy, and power quality. Its 20 kHz per channel sampling rate captures transient events that slower meters miss, while the built-in web server allows direct access to real-time data and historical trends via any browser. The eight digital inputs can be used for status monitoring (e.g., breaker position, door contacts), and the four digital outputs enable alarm triggering or load control. With support for BACnet/IP and Modbus/TCP, the device integrates seamlessly into building management systems and industrial SCADA environments.

Full specifications

• Measurement Accuracy (Active Energy): Class 0.2S (IEC 62053-22)
• Measurement Accuracy (Reactive Energy): Class 0.5S (IEC 62053-24)
• Voltage Measurement Range (Direct): 50-300V L-N, 87-520V L-L
• Measurement Category: CAT III 600V, CAT IV 300V
• Current Measurement Input: 4 x via Current Transformers (CTs), 1A/5A secondary
• Harmonic Analysis: Up to 63rd harmonic for voltage and current
• Sampling Rate: 20 kHz per channel
• Communication Interfaces: Ethernet (Modbus/TCP, BACnet/IP, HTTP, FTP, SNMP, NTP), RS485 (Modbus/RTU, BACnet/MSTP)
• Digital Inputs: 8
• Digital Outputs: 4
• Internal Memory: 256 MB Flash for data logging
• Power Supply: 95-240V AC / 135-340V DC
• Mounting Type: DIN rail (6 TE / 107.5 mm width)
• Protection Class: IP20 (front and terminals)
• Certifications: UL Listed, CE
• Frequency Measurement Range: 45 Hz - 65 Hz
• Operating Temperature: -25 °C to +55 °C
• Measurement Functions: RMS voltage/current, active/reactive/apparent power, power factor, frequency, harmonics, unbalance, sag/swell, transients, flicker

Final note

For engineers and facility managers who demand both billing-grade accuracy and deep power quality insight, the UMG 800 UL delivers a future-proof solution with flexible communication and robust logging capabilities.