When a medium-voltage transformer at a solar park in the Netherlands suffered a sudden short circuit, Protrafo was called in to provide a fast and reliable recovery. The incident had temporarily halted energy production, making a swift repair critical to minimize downtime and restore grid contribution.
Our service team performed an on-site inspection and coordinated the transport of the faulty transformer to one of our certified repair partners. The recovery process included:
Comprehensive diagnostic testing
Replacement of damaged windings
Oil filtration and refill with fresh insulating oil
Insulation testing and thermal performance checks
Final acceptance test according to IEC standards
Once repaired, the transformer was returned to site, reinstalled, and recommissioned under Protrafo’s supervision. The solar park was back in operation within a short timeframe—ensuring continued contribution to renewable energy generation.
This case demonstrates our ability to combine technical expertise, logistical coordination, and rapid service to keep green energy projects running smoothly.
This successful recovery project underscores Protrafo’s ability to respond quickly to unexpected failures and support renewable energy providers with expert repair solutions. By combining technical know-how, rapid logistics, and close customer coordination, we help ensure the resilience and uptime of solar installations across the Netherlands and beyond.
Fast turnaround on critical repairs
Every unit is tested according to IEC standards to ensure full reliability.
Field services available for inspections, minor repairs, and condition assessments.
From coil rewinding to ECODESIGN compliance—your transformer, up to date and future-ready.
Yes, Protrafo provides on-site diagnostics and repairs where possible, including thermal imaging, insulation tests, and minor component replacement. For complex repairs, the transformer may be transported to our partner facilities.
Repair lead times vary based on damage severity and parts availability. However, with our dedicated service team and stock of critical components, we can often provide rapid turnaround, including emergency interventions.
The typical lifespan of a transformer ranges from 25 to 40 years, depending on the type, load conditions, maintenance, and operating environment. With proper care and monitoring, such as using systems like Protrafo Insights®, transformers can operate reliably for several decades.
Cast resin (dry-type) transformers require minimal maintenance. Routine visual inspections, dust removal, and checking for signs of overheating or insulation wear are usually sufficient. Unlike oil-filled units, they do not require oil testing or leak monitoring, making them ideal for low-maintenance environments.
Transformer oil serves two key purposes: insulation and cooling. It insulates internal components to prevent electrical faults and helps dissipate heat generated during operation. High-quality mineral or synthetic oils, such as MIDEL, also enhance fire safety and extend transformer lifespan.
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