Transformer Refurbishment, Maintenance and Repowering
Transformer refurbishment to restore reliability and extend asset service life
The refurbishment of transformers is a strategic solution to restore the reliability, efficiency, and technical compliance of electrical assets throughout their lifecycle. TSEA offers specialized refurbishment services focused on recovering the operational and structural conditions of the equipment, correcting failures, replacing components, and applying advanced engineering, ensuring that our clients’ critical electrical infrastructure has its service life extended.
Refurbishment services are applicable to transformers from different manufacturers and are not limited to TSEA manufactured equipment.
Designed for transmission, distribution, and industrial sectors, this service represents a cost-effective investment that extends transformer service life and maximizes operational performance. Ensuring extended lifespan for critical electrical infrastructure.
Restoration of operational reliability
TSEA’s transformer refurbishment services are primarily aimed at restoring operational reliability, even in cases of severe faults or advanced degradation. Following a detailed assessment of the asset’s condition and a precise technical diagnosis, the required interventions are defined to reestablish transformer safety, efficiency, and availability.
Component replacement and corrective actions
The refurbishment service may involve partial or complete replacement of the windings, while preserving the original core whenever technically feasible. In addition, TSEA performs repairs, technological upgrades, and modernization of accessories, monitoring systems, sealing systems, and the control cabinet. The reuse of the tank is evaluated on a casebycase basis, ensuring technically appropriate and economically efficient solutions.
When applicable, TSEA’s engineering team develops specific solutions for older or outofproduction transformers, including design adjustments and technological upgrades compatible with current operational requirements.
Maintenance
Transformer maintenance is a decisive factor in ensuring the reliability, safety, and availability of critical electrical assets. TSEA provides comprehensive preventive, predictive, and corrective maintenance services for transformers, voltage regulators, reactors, and associated equipment, ensuring operational continuity, reduced failure rates, and extended asset service life.
Maintenance activities are defined based on technical assessments and condition diagnostics, enabling targeted and more efficient interventions throughout the equipment lifecycle.
With certified technical teams, TSEA supports transmission, distribution, power generation companies, and industrial facilities, applying industry best practices and rigorous technical standards throughout every stage of service delivery.
Preventive, predictive, and corrective maintenance
TSEA delivers transformer maintenance through a comprehensive approach that includes preventive, predictive, and corrective actions. The services apply to transformers and equipment from different manufacturers, including longoperating assets and outofservice units.
Services include leak correction through gasket replacement, bushing replacement and adaptation, rubber bladder replacement, insulating oil treatment and regeneration, as well as active part drying with URSI measurement. These activities enable early fault detection, anomaly correction, and sustained operation within proper design parameters.
Transformer Repowering
Transformer repowering is a technically and economically efficient solution for increasing the capacity and performance of existing assets without requiring full equipment replacement. TSEA offers specialized repowering services, adapting transformers to new load demands and electrical system expansion processes, backed by highlevel engineering and full standards compliance.
Designed for utilities, industrial facilities, and power generation companies, the service maximizes asset lifespan, preserves investments, and ensures greater operational efficiency.
Why TSEA?
- Structural and electrical condition recovery
- Extension of transformer service life
- Engineering-led technical solutions
- Capacity uprating without full equipment replacement
- Custom-engineered designs based on operating conditions
- Lifecycle investment optimization
Increasing Asset Capacity
Repowering performed by TSEA enables an increase in the transformer’s rated capacity, allowing existing equipment to support higher load levels. Through technical studies and design calculations, solutions are implemented to enhance transformer performance while maintaining safety and operational reliability.
Adapting to New Load Conditions
As electrical systems evolve, new load conditions require existing assets to be upgraded. TSEA performs coil redesign, when necessary, with or without reuse of the core, along with the addition of new fans and a full review of the cooling system. Radiators, fans, heat exchangers, and the control cabinet can be redesigned to ensure thermal and electrical efficiency in the repowered transformer.
TSEA Custom Engineering
The distinguishing factor of TSEA’s refurbishment and repowering service is the application of custom engineering in every stage of the process. Solutions are developed specifically for each project, considering equipment characteristics, operating conditions, and customer requirements.
The entire process is carried out with speed and precision, minimizing downtime and delivering upgraded transformers that are efficient, reliable, and fully compliant with current technical standards.