WME-21 Set for measurements in photovoltaic systems

• 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.
• KT-256F | Infrared diagnostics.

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: R_ISO+ and R_ISO-.
• 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.

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.

Earth resistance meter

Earthing resistance measurements

• 3-pole method – measurement of earthing systems using auxiliary probes.
• 2-pole method.

Features

• Resistance of auxiliary electrodes R_H and R_S.
• Measurement of interference voltage to 100 V.
• Indication of battery state.
• Selection of maximum measuring voltage (25 V and 50 V).
• Auto-OFF function.

Thermal imager

Features

• Measuring range: -20°C...550°C (-4°F... 1022°F).
• Quick start.
• Fast temperature measurement.
• Automatic signalling of exceeded alarm threshold.
• Autofocus.
• Saving IR images to SD card.
• Built-in Li-Ion battery with 16-hour working time.
• Interfaces: USB type C, SD slot.
• Can be set up on a tripod.