Transformer Repair

TTES

High-quality transformer repair

We are specialists in giving the best treatment to all types of electrical substations according to each of the needs of our customers. Derived from the experience and knowledge in the different brands and types of transformers allows us to solve problems by giving adequate maintenance to transformers in a preventive manner, which anticipates possible damage to the transformer and allowing to maximize useful life of electrical equipment, maintain its accounting and minimize repair costs.

We are currently in the market for the repair of transformers up to 300 MVA and up to 400 KV in column and battleship designs. In the last 7 years we have repaired more than 200 power equipment nationwide which have been delivered in a timely manner and are currently feeding the national electricity networks.

Our expertise

Reliable transformer industry leader in the USA

The fastest delivery speed, complemented by exceptionally detailed drawings and a seamless production process establishes our reputation as an industry leader in the USA.

Fastest delivery time

Competitive price

2 years warranty

Swift process

More about transformers

What are the Common Issues with Transformers?

Transformers are critical components in electrical power systems, and they can experience various issues that may impact their performance. Here are some common issues with transformers:

  1. Overheating: Transformers generate heat during normal operation. Overloading, high ambient temperatures, or inadequate cooling systems can lead to overheating, which can cause insulation degradation and reduce the transformer’s lifespan.
  2. Insulation Failure: Insulation breakdown can occur due to aging, contamination, or excessive voltage stresses. This can result in short circuits, reduced efficiency, and even catastrophic failure.
  3. Oil Contamination: Many transformers use oil for cooling and insulation. Contamination of the oil by moisture, dirt, or other impurities can lead to reduced dielectric strength, affecting the transformer’s performance.
  4. Bushings Failure: Bushings provide insulation and support for external connections. Faulty bushings can lead to oil leaks, reduced insulation, and even flashovers, compromising the transformer’s reliability.
  5. Tap Changer Issues: Tap changers allow adjustments to the turns ratio. Failure or malfunctions in tap changers can result in improper voltage regulation and affect the transformer’s ability to meet varying load conditions.
  6. Winding Failures: Mechanical stresses, thermal cycling, and manufacturing defects can lead to winding failures. Winding faults may result in short circuits, decreased efficiency, and even transformer damage.
  7. Corrosion: Corrosion of transformer components, especially in outdoor installations, can compromise the structural integrity of the transformer, leading to leaks and reduced performance.
  8. Vibration and Mechanical Stress: Transformers may experience mechanical stresses and vibrations due to factors such as transportation, seismic activity, or improper installation. These stresses can contribute to insulation failure or damage to core and winding structures.
  9. External Factors: Lightning strikes, environmental conditions (such as floods or earthquakes), and other external events can cause severe damage to transformers. Adequate protective measures, like surge arrestors and proper location, are essential.
  10. Aging: Transformers have a finite lifespan, and aging can lead to a gradual decline in performance. Regular maintenance, testing, and monitoring are crucial to identifying and addressing age-related issues.
  11. Load Imbalance: Imbalances in the load between phases can lead to unequal heating and increased losses in the transformer. This can reduce efficiency and contribute to overheating.
Regular maintenance, routine testing, and proper operational practices are essential to identify and mitigate these issues before they lead to transformer failures. Early detection and corrective actions can significantly extend the life and reliability of transformers in power systems.

When Should You Seek Professional Transformer Repair Services?

  1. Visible Physical Damage: If a transformer has visible physical damage, such as dents, cracks, or leaks, it requires immediate attention. Physical damage can compromise the insulation, cooling systems, and overall structural integrity.
  2. Oil Leaks: Oil-filled transformers use oil for insulation and cooling. Any signs of oil leaks indicate a potential issue with the transformer. Professional repair is necessary to address the source of the leak, replace damaged components, and replenish or purify the oil.
  3. Overheating Issues: If a transformer is consistently running at elevated temperatures or experiencing frequent overheating, it indicates a problem with the cooling system, load management, or other internal issues. Professional inspection and repair are necessary to prevent further damage.
  4. Electrical Failures: Transformer failures, such as short circuits, can result in power outages, equipment damage, or safety hazards. Professional repair services are required to identify the cause of the failure, replace faulty components, and ensure the transformer’s proper functioning.
  5. Abnormal Noise or Vibration: Unusual noises or excessive vibrations during transformer operation may indicate mechanical or electrical issues. Professional technicians can assess the source of the problem, perform diagnostics, and carry out necessary repairs.
  6. Bushings and Insulation Issues: If there are signs of bushing failure, insulation breakdown, or partial discharge in the transformer, immediate attention is needed to prevent further deterioration. Professional repair services can assess the insulation condition, perform testing, and replace damaged components.
  7. Faulty Tap Changer Operation: Issues with tap changers, such as erratic operation or failure to adjust, require professional attention. Tap changer problems can affect voltage regulation and overall performance.
  8. Aging Transformers: As transformers age, they are more prone to wear and deterioration. Regular maintenance and periodic inspections by professionals can help identify signs of aging and address issues before they lead to major failures.
  9. Safety Concerns: If there are safety concerns related to the transformer, such as exposed electrical components, potential fire hazards, or environmental hazards (e.g., oil spills), immediate professional intervention is necessary to mitigate risks.
  10. Regulatory Compliance: Compliance with safety and environmental regulations may require professional services for transformer repair and maintenance. Certified technicians can ensure that the repairs meet industry standards and regulations.

In any of these situations, it’s essential to contact qualified and experienced professionals who specialize in transformer repair. Attempting to address complex transformer issues without proper knowledge and expertise can lead to further damage and safety risks. Regular preventive maintenance is also recommended to identify and address potential problems before they escalate.