Fronius Symo 20.0-3-M Insulation RISO fault

Twycross – Fronius Symo 20.0-3-M insulation RISO fault

The Fronius Symo 20.0-3-M insulation RISO fault on the Solar PV system was quickly identified as rat damage to DC cables on the array.

Rat damage


104 Renesola JC245M-24-Bb panels were removed where each string was carefully checked and repaired as required before mechanical protection was installed to protect from further attacks.

All debris from the roof was removed from under the arrays before the system was reinstated.

Renesola JC245M-24-Bb Panels

Fronius Symo 20.0-3-M fault

Once complete all string cables were again tested in both dry and wet conditions.

The system was left in full working order.

Whilst on site the firmware of each of the Fronius Symo inverters was updated.