Solar Cable Insulation Fault Detection
Solar cable insulation faults are frequent and costly, significantly impacting production. It is estimated that 1 in every 10 strings is affected by cable damage, with 50% of these faults going unnoticed. Solar inverters, protected against ground faults, interrupt operation when insulation failure occurs, resulting in downtime that can last for hours.
Figure 1: Through Delfos monitoring, a reduction in inverter insulation resistance was detected 1 day before the equipment's first warning. (Figure for illustrative purposes only)
Solution
Through Delfos monitoring, a drop in an inverter's insulation resistance was detected one day before the equipment's first alarm. This allowed the O&M team to act before any downtime occurred, completely preventing energy loss.
Results
Without Delfos monitoring, this failure would have reduced each inverter's output by approximately R$2,000 per month. This case demonstrates how Delfos' advanced solutions—such as real-time monitoring and predictive analytics—prevent production losses and ensure maximum operational efficiency.
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