12/05/2026
The Sonel - Measurement Instruments MPI-540 Series:
Efficiency Meets Precision:⚡☀️
Managing complex electrical and renewable energy systems requires tools that are as versatile as the environments they test. The Sonel MPI-540 and MPI-540-PV are the ultimate "all-in-one" solutions for professionals who need high-level diagnostics without carrying a truckload of equipment
Why Choose the MPI-540 Series?
The MPI-540 is a powerhouse for general electrical installations, while the MPI-540-PV adds specialised capabilities for the solar industry. Here is a breakdown of what these units can do:
1. Comprehensive PV Installation Testing (MPI-540-PV Only) 🔋
Test in accordance with EN 62446.
Measures Open Circuit Voltage (U_{OC}) and Short Circuit Current (I_{SC}).
Automatically recalculate parameters to Standard Test Conditions (STC).
Analyse inverter efficiency by measuring both AC and DC sides simultaneously.
2. Advanced Power Quality Recording 📈
S-Class Recording: Capture power quality parameters according to EN 61000-4-30.
Live Mode: View real-time waveforms, phasor graphs, and harmonic spectrums.
Calculate energy costs and potential energy losses.
3. Full Electrical Safety Suite 🛡️
Loop Impedance: Fast and accurate testing, even in circuits with RCDs.
RCD Testing: "Auto" mode for quick, sequenced testing of residual current devices.
Insulation Resistance: Testing up to 1000\text{ V}.
Earth Resistance: Supports multiple methods (3-pole, 4-pole, and soil resistivity).
4. Modern Ergonomics 📱
7" Colour Touchscreen: The largest in its class for clear data visualisation.
Seamless Connectivity: Transfer reports via Wi-Fi, Bluetooth, or USB.
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