A complete device for parallel connection and monitoring of the strings for photovoltaic
FRIEM string box enables the parallel connection up to 36 inputs through a disconnecting switch, are connected to the Inverter.
The string box has also an overvoltage protection device. The continuous measurement of the current for each string, of the irradiation and temperature of the panels (through dedicated sensors), allows a complete check of the operation of the solar modules.
A transmission of measures and of protection’s status through serial communication with the inverters are integrated in the monitoring system.
The cover of the string box is realized in strong, weatherproof, polyester laminated glass with IP65 protection degree suitable for indoor and protected outdoor installation.


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