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ReRa Solutions B.V.
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ReRa Solutions - PV-Monitor for PV-System Measurement

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The ReRa PV-Monitor (PV-MON) is a specialized device designed for the measurement of DC current and voltage within any photovoltaic (PV) string or module. It supports outdoor conditions with its weatherproof design and can be installed behind any PV module without requiring special tools. The PV-MON does not interfere with existing inverters or measurement instruments as it connects seamlessly with the available cabling. This device features two analog inputs for temperature and irradiance sensors and uses a fully isolated digital MODBUS-RTU for communication. Available in two models, PV-MON-LV (200V, 30A) and PV-MON-HV (1500V, 30A), it offers software-controllable voltage ranges and ensures safe operation with 2kV galvanic isolation protecting both sensors and the PV side.
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The PV-MON is used to measure DC current and voltage in-line of any PV-String or PV-module. It is equipped with two analog inputs to measure a Pt100 temperature sensor and a 0-100mV analog irradiance sensor.

The PV-MON is used to measure DC current and voltage in-line of any PV-String or PV-module. This highly accurate device can be used for outdoor conditions as it is fully weatherproof. The shape of the PV-MON is designed is such a way that mounting behind any PV-Module is possible without special tooling.

The PV-MON is connected in between the already available cabling and does not interfere with existing inverters or measurement tools.

In addition to the voltage and current inputs, two high precision analog inputs are available:

  • To measure a Pt100 temperature sensor (PV-module temperature)
  • To measure a 0-100mV analog irradiance sensor

A fully isolated digital MODBUS-RTU is used to communicate with the instrument.

There are 2 models of the PV-MON:
PV-MON-LV (200V, 30A) , software controllable range: 60V, 100V, 200V
PV-MON-HV (1500V, 30A), software controllable range: 500V, 1000V, 1500V

Galvanic isolations (2kV) are securing safe operations for both the sensors and the PV-side.