The Sonel MPI-540-PV photovoltaic multi-function meter from Action Instruments was created for measuring the parameters of PV installations. Using only this single device, users can conduct a comprehensive range of tests on both the DC and AC sides, in accordance with the guidelines of the EN 62446 standard.
Additionally, it can be used to carry out all measurements necessary to determine the safety condition of both domestic and industrial electrical installations. This device features advanced capabilities, specifically designed for specialists in the installation and electrical industry.
One of its key features is the automatic recalculation of measured parameters to Standard Test Conditions (STC). It can also verify inverter efficiency by measuring voltages, currents, and power. After transferring data from the meter's memory to the Sonel Reports PLUS program, users can generate detailed reports of the PV installation parameters.
To automate measurements, the Sonel MPI-540-PV features an Auto mode for testing residual current devices (RCDs). The instrument also includes pre-programmed measurement sequences (autotests) that can be customised with a user’s own sequences if needed.
The device is designed to work with mains at nominal frequencies of 50/60 Hz and a wide range of nominal voltages: 64/110 V, 110/190 V, 115/200 V, 127/220 V, 220/380 V, 230/400 V, 240/415 V, 254/440 V, and 290/500 V, as well as DC networks.
It supports various systems, including:
- Single-phase
- Split-phase with common N
- Three-phase – WYE with and without N conductor
- Three-phase – Delta
The MPI-540-PV combines the measuring capabilities of several devices while maintaining exceptional accuracy. It can measure photovoltaic installations in accordance with the EN 62446 standard, including:
- Continuity of protective and equipotential bondings
- Earth resistance
- Insulation resistance on the DC side
- Open circuit voltage UOC
- Short circuit current ISC
- Work currents and powers on both DC and AC sides
- Inverter efficiency
Additionally, the MPI-540-PV can record 50/60 Hz power quality parameters in accordance with S class of EN 61000-4-30. It can also be used for all measurements required for the commissioning of electrical installations in accordance with applicable regulations.
Its automatic installation safety test allows for easy safety control of residential, commercial, and industrial electrical installations.
The MPI-540-PV also features a three-phase power quality recorder with a live mode view, allowing real-time registration and graphical presentation of electrical network parameters, such as voltage, current, power, harmonics, and THD.
