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Electrical Transformer
Service and Maintenance

At NOVA MIRON, we specialize in the service and maintenance of medium- and high-voltage transformers. Our customer-focused approach, expert team, and continuous investment in equipment position us as a strategic partner in the electrical market, delivering flexible solutions and building long-term relationships based on trust.
Solutions:

Transformer Installation

We carry out the installation of electrical transformers with the highest level of professionalism, taking care of every detail of the process from transportation to commissioning. Our service covers transformers up to 500 kV and 300 MVA, meeting the highest technical and safety standards.

Our Process:

  • Customized Planning:
    We design a work plan in collaboration with the client and manufacturer, ensuring each stage is tailored to the specific needs of the project.

  • Equipment and Advanced Technology:
    We operate with crane trucks, dry air equipment, oil treatment units, and high-vacuum plants, ensuring precision and efficiency in every installation.

  • Electrical Testing:
    We perform on-site testing with calibrated and certified equipment, ensuring that the transformer's electrical parameters meet the required specifications.

  • Experience and Expertise:
    Our highly trained team, with extensive experience, ensures precise and reliable installation.

At Nova Miron, we turn every project into a safe and efficient operation, ensuring optimal transformer performance from day one.

Oil Analysis

Dielectric oil is an essential component for transformer operation, playing a key role in cooling and electrical insulation. We perform advanced analysis to ensure optimal transformer performance and the quality of the insulating oil.

Why is it important?

Dielectric oil controls the transformer's temperature by dissipating the heat generated by the windings and magnetic core, while also providing electrical insulation. Its condition directly affects the equipment’s lifespan and performance.

Types of Analysis:

01 Transformer Condition:
  • Dissolved Gas Analysis (DGA)
  • Furanic Compounds Analysis.
  • Metal Content.
02 Insulating Oil Condition:
  • Moisture Content (in oil and solids).
  • Neutralization Number (Acidity) and Interfacial Tensión.
  • Dielectric Strength and Dissipation Factor (tan δ).
  • Oxidation Inhibitors and Polar Compounds.
  • PCB Detection and Sludge Content.
  • Volume Resistivity, Viscosity, Density, and Color.
  • Corrosive Sulfur, Flash Point, and Degree of Polymerization.

Electrical Testing
and SFRA

We perform advanced electrical testing as a fundamental part of preventive transformer maintenance. These tests help diagnose issues that are not visible to the naked eye, ensuring optimal equipment performance, extending its lifespan, and improving reliability.

Key Electrical Tests:
  • Insulation Resistance of Windings.
  • Grounding System Testing.
  • Winding Resistance.
  • Transformation Ratio.
  • Polarization Index.
  • Dissipation Factor (tan δ) and Capacitance.

SFRA: Sweep Frequency
Response Analysis

SFRA is an advanced diagnostic tool that detects electrical and mechanical faults that other methods cannot identify. This analysis generates a “digital fingerprint” of the transformer, providing a unique profile of its internal condition.

Key Electrical Tests:
  • Winding deformations and displacements.
  • Short circuits, open windings, and core movement.
  • Core grounding faults and clamping structure issues.
  • Structural damage and shorted turns.

Oil Leak Elimination

At Nova Miron, we understand the importance of mineral insulating oil in transformer cooling and insulation. Oil leaks at critical points can compromise equipment performance and create risks of internal faults.

Our service includes on-site oil leak detection and repair, ensuring operational continuity and protecting the equipment’s lifespan. We rely on highly skilled technical personnel and the necessary infrastructure to resolve these issues efficiently and safely.

Infrared
Thermography

Infrared thermography is an advanced maintenance technique that uses state-of-the-art cameras to identify thermal anomalies in transformers and other electrical equipment. This method reduces downtime by preventing unexpected failures and ensuring reliable operation.

Benefits:
  • Detects temperature rises associated with faulty connections, improperly sized components, or insulation failures.
  • Enables precise identification of “hot spots,” facilitating immediate corrective actions.

Each inspection includes a comprehensive report with real and thermal images of the equipment, providing a clear view of detected anomalies and the steps required to resolve them.

Alquiler de
transformadores

We provide medium-voltage transformer rental services to ensure the operational continuity of your business in case of emergencies or failures. We understand that interruptions in power supply can significantly impact production and operations, which is why we offer fast and flexible solutions tailored to each need.

Our Service Includes:

  • Supply of temporary medium-voltage transformers

  • Transportation and on-site connection.

  • Turnkey solutions tailored to specific client requirements .

SAMTE Maintenance Plan

At Nova Miron, we understand the importance of preventive maintenance to ensure the proper operation of medium- and high-voltage transformers. For this reason, we developed S.A.M.T.E. (Electrical Transformer Maintenance System), an integrated solution that minimizes risks and optimizes costs, ensuring the operational continuity of your business.

SAMTE Objectives

  • Risk Reduction:
    Prevents power supply interruptions caused by transformer failures.

  • Rapid Response:
    Provides solutions in emergency situations, mitigating the impact of potential failures.

  • Complementary Technical Support:
    Enhances the capabilities of in-house maintenance teams, especially in medium-voltage systems.

  • Standards Compliance:
    Aligned with maintenance programs required for certifications such as ISO 9001.

  • Risk Reduction:
    Reduces expenses associated with downtime, repairs, and transformer reinstallation.

Contact Us

If you need more information about our services, please send us an inquiry.

MIRON CONTACT INFORMATION

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