Parameter Value / Description Explanation Series / Range MetaPRO ABB's advanced series for distribution board instrumentation and measurement. Product Type Intelligent Incoming Line Measurement & Protection Unit Combines metering, monitoring, and protection in one device. Model Number MP3-11W Code Breakdown: - MP3: MetaPRO series, 3-phase. - 1: Standard frame size / variant. - 1: Specific function set (indicating basic measurement/protection). - W: Built-in high-precision energy metering (kWh, kVArh). System Type 3-Phase, 4-Wire (3P4W) Designed for systems with three phases and a neutral. Measurement Inputs • 3 Current (via CTs) • 4 Voltage (3Ph-N) Direct connection to voltage; current measured via external Current Transformers (CTs). Rated Voltage (U_n) 3 x 57.7/100V, 3 x 230/400V AC Standard measurement voltages. Must match PT outputs or system voltage directly. Rated Current (I_n) 1A or 5A (via CTs) Depends on the connected Current Transformers. Measurement Accuracy • Energy (Active/Reactive): Class 0.5S (per IEC 62053-22) • Voltage/Current/Power: Typically ±0.5% The “0.5S class” is a high-accuracy standard suitable for billing purposes. Core Functions Measurement: • All electrical parameters (V, I, kW, kVA, kVAr, PF, Hz) • Energy import/export (kWh, kVArh) • Demand (MD) • Power quality (THD, unbalance) Protection: • Over/Under Voltage • Over/Under Frequency • Over Current (basic) Provides a complete dashboard of system health and consumption. Communication • RS485 serial communication (standard) • Protocols: Modbus RTU Allows integration into SCADA, BMS, or ABB’s own energy management systems. Power Supply Auxiliary supply: Typically 24-240V AC/DC (wide range) Powers the internal electronics independently. Display Multi-line LCD Display Local readout of all measured values, energy totals, and status. Mounting Panel Mounting Designed for cut-out mounting on a switchboard door or panel. Standards Compliance IEC 61557-12 (Electrical safety), IEC 62053-22 (Metering accuracy), IEC 61010-1 (Safety)