Repair of 85 Inverter Labs after thunderstorm

The challenge

A thunderstorm severely affected a 2.5 MW photovoltaic plant, causing a massive failure in the circuitry of 85 SMA 10 kW inverters. The technical complexity of the failure, the volume of equipment and the urgency to restore production with the least economic impact posed a great challenge for the customer and the maintainer.

The solution

After an initial diagnosis, a localized systematic failure was detected in the power stage. Early detection of the root cause reduced subsequent analysis times and established a repeatable repair protocol.
In addition, a fully optimized transport and return logistics was designed, with routes and deliveries planned in phases to minimize the impact on production and ensure equipment availability in the field. When necessary, equipment was replaced with spare material.

The combination of reverse engineering, technical expertise and meticulous management of transportation and deadlines allowed the plant to maintain operational continuity.

The results

- Savings of more than 50% compared to the full inverter replacement option.

- Significant reduction of repair times, thanks to the replicability of the diagnosis once the failure has been identified.

- Low impact on availability thanks to staggered logistics organization.

- Satisfied and loyal customer with Clervin's technical model.

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