Innovative Composites & Industrial Coatings
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Case Study:
HVDC Transformer Repair
HVDC Transformer Repair.
At a power substation in Mexico, an HVDC High-Voltage Direct Current transformer required urgent repairs due to persistent oil leakage and water ingress through its pipework connections and fittings. These issues posed significant risks to the transformer’s performance, safety, and lifespan. To prevent further damage, a robust and dependable sealing solution was critical to preserving operational reliability and shielding the transformer from harsh environmental conditions.
HVDC stands for High-Voltage Direct Current, which is a power transmission system that uses direct current (DC) to move large amounts of electricity over long distances and known as an electrical or power superhighway.
Resimac’s HVDC Transformer Repair Solution.
- Surface prepared to ensure optimal adhesion.
- Sealed and protected with 104 Metal Repair Fluid XF, reinforced with 808 tape.
HVDC (High-Voltage Direct Current) Transformer Repair Application Details.
The steel substrate was abrasive blasted to SA2.5 with a 75-micron profile in accordance with ISO 8501/4 SA2.5 (SSPC SP10/NACE 2) standards, ensuring proper surface preparation and optimal coating adhesion. Bolt heads, flange joints, and other mating surfaces were carefully stripe coated with 104 Metal Repair Fluid XF using a brush and plastic applicator to achieve a consistent, uniform base layer.
For additional reinforcement, 808 Reinforcement Tape was embedded within the coating at flange joints and other critical areas, significantly enhancing mechanical strength and long-term durability. To complete the repair, all treated surfaces were overcoated with a final layer of 104 Metal Repair Fluid XF fully encapsulating the repairs to provide a robust seal against oil leakage and water ingress, ensuring reliable protection under operational and environmental conditions.
Results and Benefits of Resimac’s HVDC Transformer Repair Solution.
The multi-layered application of 104 Metal Repair Fluid XF provided a robust and durable seal for the HVDC transformer components, effectively eliminating oil leakage and preventing water ingress. The incorporation of 808 Reinforcement Tape further reinforced the repair, enabling it to withstand the demanding HVDC operating environment.
This reliable solution reduced the likelihood of future leaks, minimized maintenance needs, and ensured uninterrupted transformer performance. By maintaining operational reliability, the repair contributed to continuous power delivery, enhancing safety, efficiency, and overall facility performance.
