This Voltacon digital monitoring system tracks the output current of up to 24 individual PV string groups using hall-effect sensors. Measuring each string separately, rather than the array as a whole, means an underperforming or faulted string shows up straight away instead of being masked by the rest of the array.

Key features of this solar PV combiner box monitoring solution

• String coverage, up to 24 independent PV string groups monitored
• Sensor grouping, hall-effect current sensors supplied in groups of 4, each measuring 4 independent PV strings
• Scalability, sensor groups can be added as the installation requires
• Measurement type, continuous individual string current measurement
• Fault detection, identifies underperformance or faults at string level
• Output, digital monitoring system with data output

Applications

Suited to string-level performance monitoring in commercial and utility solar PV systems, where fault detection and yield optimisation across multi-string arrays matter more than on a small domestic roof.

Installation notes

The hall-effect sensors clip around each string conductor. The monitoring controller needs a stable DC power supply. Installation and commissioning should be carried out by a qualified solar engineer.