Junction Box with Monitoring for Photovoltaic Plant
Array Box is a junction box which allows several photovoltaic strings (from 8 to 32) to be connected in parallel. The total DC power is then distributed to the photovoltaic inverter. It includes photovoltaic string protection, overvoltage protection and a DC output switch disconnector. They are well adapted for Power plants as well as for photovoltaic large buildings
The Array Box also integrates a monitoring module and communicates through Modbus protocol with the monitoring devices (iRIO, XLRIO) located in the inverter substation. For each string of panels, Array Box realises DC current measurement (0 to 20A per string). The DC voltage (up to 1000Vdc) is also measured and abnormal behaviour or failure are detected.
Array Box can also propose safety opening control and remote control of the switch disconnector.
Minimize Power Plant downtime
Array Box allows you to provide accurate global monitoring for the power plant thanks to DC voltage and photovoltaic string current measurement. You are able to immediately locate a faulty string
Ensure the security of the plant
Array box provides all necessary elements which participate to ensure the security of the system and personnel
Protection against short circuits and surges
Isolation of DC link through an integrated switch disconnector
Safety opening control
Opt for a preventive maintenance rather than a curative maintenance
Thanks to the Array box monitoring system, the global photovoltaic monitoring solution is able to show you the internal status of each Array box. Not only does it provide information for automatic detection of faulty strings but it also gives auxilliary indications such as the internal temperature, lightning protection end-of-life status or the state of the switch disconnector.
Reduce your on-the-field operation time
Thanks to the array box monitoring, when commissioning, you can check the strings connection and the status of each Array box from the inverter substation or the grid connection substation or even from a remote control room.
Then, at any time, it is also possible to have remote control of the switch disconnector integrated in each Array box
Easy adaptation to your plant
Depending on the topology of your power plant, you can connect different meteorological sensors to any of the array boxes. This information is necessary for the monitoring solution to calculate theoretical energy production such as:
Temperature of solar panels
Wind direction and velocity