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Description
xThe MT174 is a robust, future-ready polyphase meter designed to support a wide range of residential and small commercial applications. Offering advanced functionality with multi-tariff capabilities, it ensures precise measurement of Active, Reactive, and Apparent energy. Its compatibility with photovoltaic systems and anti-tamper features make it an ideal solution for evolving smart grid infrastructures.
Key Features
- Polyphase energy measurement (Active, Reactive, Apparent)
- Multi-rate and time-of-use (TOU) registration (up to 4 tariffs)
- Direct or current transformer connection
- Optical and RS485 communication interfaces
Specifications
xNominal Voltage (Un)
3×230/400 V, 3×230 V, 230 V, 3×400 V
Frequency
50 Hz or 60 Hz
Base Current (Ib)
5 A or 10 A (Direct); 1 A (CT version)
Maximum Current (Imax)
85 A, 100 A, 120 A (Direct); 6 A (CT version)
Accuracy Class
Active: Class 1 or 2 / A or B (EN 50470-3, IEC 62053)
Real-Time Clock Accuracy
±3 min/year at 23 °C, lithium battery reserve (5 years)
Ingress Protection
IP54 (IEC 60529)
Temperature Range
Operation: -40 °C to +60 °C (extended up to +70 °C)
Communication Ports
Optical port, RS485 (IEC 1107 compliant)
Display
Backlit LCD with indicators: T1–T4, MC, TC, BAT, etc.
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