Photovoltaic string monitoring

Utilize solar power efficiently

Utilize solar power efficiently

SOLARCHECK provides reliable information regarding the performance of your photovoltaic system. You can therefore detect errors and take appropriate countermeasures.

Back to Photovoltaic park management


Search in Photovoltaic string monitoring

Show all products in this category

Detect errors – increase efficiency: photovoltaic systems should achieve maximum energy yield within the shortest possible time. SOLARCHECK enables you to respond immediately to power loss at individual lines which may be caused by damaged panels or defective contacts and cabling.

Your advantages

  • Low costs and wiring effort, as an additional power supply unit is not required in the device connection box
  • Easy and safe current measurement – without interrupting cables, thanks to Hall sensors
  • Space-saving installation, thanks to the compact design
  • Easy integration in monitoring systems, thanks to Modbus/RTU communication
  • Monitoring of remote indication contacts by means of an additional digital input
  • Flexible expansion, thanks to optional voltage measurement of up to 1500 V DC

SOLARCHECK – measurement and communication

Product overview of SOLARCHECK PV string current monitoring  

SOLARCHECK - the modular string current monitoring system

The modular Solarcheck monitoring system consists of various devices for current and voltage measurement and an associated communication module.

Communication module:

  • For connecting and collecting measured values from up to eight measuring modules
  • Provision of data for transfer to higher-level controllers
  • Supply of the connected measuring modules

Current measuring modules:

  • 8-channel current measurement up to 20 A DC
  • Detection of reverse currents of up to -1 A
  • 4-channel extension modules for 20 A DC
  • Digital input for monitoring, e.g., the remote indication contacts of surge protection modules
  • Supply via the communication module

Voltage measuring module:

  • Voltage measurement up to 1500 V DC in any grounded PV system
  • Connection and supply is usually via the analog input provided on the 8-channel Solarcheck current measuring module
  • Output of the voltage measured value as an analog signal
  • As an option, can also be removed from the SOLARCHECK group and used separately

Easy integration into monitoring systems

Monitoring large networks  

SOLARCHECK network for monitoring photovoltaic strings

The communication module collects the measured values from the current measuring modules and forwards them to a higher-level controller via RS485 Modbus.

  • You can acquire up to eight or four string currents with one current measuring module each.
  • A maximum of eight current measuring modules of any type can be connected to one communication module.
  • The 2-wire communication cable is also used to supply the measuring modules with power. This means that no additional power supply is required in the field.
  • The voltage measuring module is usually connected to and also supplied via the analog input provided on the 8-channel current measuring modules.
  • All measured values can be read out of the communication module via open registers.


C6 The Exchange
Calmount Park
Dublin 12
D12 XE18