Comprehensive measurements of photovoltaic installations
 
A set of measuring instruments with accessories. The set includes:
Sonel PVM-1020 photovoltaic meter,
Sonel IRM-1 solar radiation and temperature meter,
Sonel MRU-10 earth resistance meter.
 
Capabilities
PVM-1020 | It can be used for category 1 measurements according to IEC 62446-1.
PVM-1020 | It converts measured parameters into STC conditions according to IEC 60891 by cooperation with the IRM-1 solar radiation and temperature meter.
IRM-1 | Measurement of solar radiation and temperature.
IRM-1 | The LoRa interface for communication with a master meter – offers a larger range than the Bluetooth technology!
MRU-10 | Earthing resistance measurements of photovoltaic installations using the 3-pole method.
 
PVM-1020
Photovoltaic meter
Features
It can be used for category 1 measurements according to IEC 62446-1.
AUTO mode for performing a sequence of measurements after one press of the START button.
It converts measured parameters into STC conditions according to IEC 60891 by cooperation with the IRM-1 solar radiation and temperature meter.
reSYNC function – automatic completion of results with environmental parameters and their conversion to STC conditions after restoring connection with IRM-1.
The built-in LoRa radio interface ensures cooperation with the IRM-1 meter over long distances.
Built-in Bluetooth module for communication with a computer.
Large measurement memory: 100 objects with 40 cells each.
Backlit display and buttons.
 
Measured parameters
The open circuit voltage of the PV panel or a chain of panels, up to 1000 V DC.
RMS voltage of the AC network up to 600 V with frequency measurement.
Short circuit current of a PV panel or chain of panels – up to 20 A DC.
Insulation resistance of PV panels – measuring voltage of 250, 500 or 1000 V, simultaneous measurement of two values: RISO+ and RISO-.
Insulation resistance of AC circuits – measuring voltage 250, 500 or 1000 V.
Resistance of protective conductors and equipotential bonding with ± 200 mA current. Low-current resistance measurement, audible and visual signalling.
Measurement of PV panels operating current and AC current – all with external clamp.
AC/DC power Measurement.
Diode test with 200 mA current, automatic polarity detection. Test of blocking diodes with 1000V DC voltage.
 
IRM-1
Solar radiation and temperature meter
Features
Measurement of solar radiation and temperature.
The LoRa interface for communication with a master meter – offers a larger range than the Bluetooth technology!
Automatic data synchronization with a master meter with reSYNC function.
Built-in compass and inclination sensor.
Built-in recorder that can be used to record solar radiation before constructing PV systems, as well as to measure the shading of existing systems.
Large measurement memory: 999 cache memory cells and 5000 recorder records available (one-time recording) with the option of overwriting them (continuous recording).
 
Measured parameters
Solar radiation intensity (irradiance) in W/m2 or BTU/ft2h.
PV panel temperature in °C or °F.
Ambient temperature in °C or °F.
Inclination angle of panels
Orientation of the panels with the built-in compass.7
 
MRU-10
Earth resistance meter
Earthing resistance measurements
3-pole method – measurement of earthing systems using auxiliary probes.
2-pole method.
 
Features
Resistance of auxiliary electrodes RH and RS.
Measurement of interference voltage to 100 V.
Indication of battery state.
Selection of maximum measuring voltage (25 V and 50 V).
Auto-OFF function.