About Us

TTC have 15 years experience in transformer manufacturing and operation in electrical utility applications.

We are able to contribute in the design, manufacturing and testing of transformers while understanding the needs of the customer in an operational application.
This enables us to develop and improve technical specifications to ensure superior performance and reliability while maintaining cost effectiveness. TTC can provide technical assistance in tender evaluations, design reviews, drawing approvals, factory inspections, test witnessing, technical support with installation and commissioning, technical knowhow on retro-filling and pursuing environmentally friendly alternatives and improvement of losses and optimizing efficiencies.

Our Specialities

We are able to bridge the gap between customer and supplier with our unique combination of in-depth experience and skill.
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Failure Investigations

Finding the root cause of a failure is key to preventing the costly and time consuming event from happening again.

 

Assists in settling insurance claims and reducing premiums

 

Identifies areas of improvement for designs of networks, operating practices and transformer manufacturing.

 

A continuous drive to make safer working conditions.

 

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Asset Management

The expected life of a transformer used at rated conditions is directly related to the ageing of the insulation system comprising of the mineral oil and the solid insulation.

 

The aged oil can be replaced or regenerated but there is no economical way of replacing the insulating paper, and therefore when it reaches a low Degree of Polymerization (DP) value, the transformer is declared to have reached the end of its useful life.

 

Heat, moisture and oxygen are the primary causes of paper Premature failures are due to manufacturing defects, network performance and operating practices

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Mobile Substations

Key asset for network flexibility – reduction of outages, allows for effective maintenance. To be used at strategic times and instances

 

TTC offers technical expertise to ensure that your mobile substation is reliable, manoeuvrable, compact and technologically advanced.

 

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Training

TTC offers training to utilities and operators on:

Transformer Fundamentals

 

New Technologies in Design and Manufacture

 

Losses and Efficiencies

 

Best Operating Practices – Network Operations, Maintenance, Condition Monitoring and Testing

 

Alternative Insulating Materials

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Transformer Purchasing

We are experts in all your purchasing needs
    • Development of technical specification based on the Customer’s needs.
    • Review, amend and improvement of the current specification
    • Preparing of the A-B schedules and technical data sheets
    • Review, amend and improvement of the current A-B schedules and technical data sheets
    • Development of Technical Scoring Criteria
    • Technical Drawing – Review, Improvements and Approval
  • Review technical data submitted by potential suppliers for suitability and compliance using the customer’s specifications and technical scoring criteria.
  • Highlight areas of concern and identification of areas of improvement
  • Reviewing of drawings and ancillary equipment.
  • Assessment of type and special tests submitted with the bid
  • Comprehensive report on the scoring and ranking of bidders

Assessment of the suppliers capability to manufacture the required transformer. Includes review of:

  • Design capability – qualification, experience , design philosophies and tools, ability to draft detailed and accurate drawings.
  • Manufacturing practices- evaluation of build procedures, processes for the evaluation of incoming raw materials
  • Testing capability and capacity – Testing to compliance requirements, adherence to standards, ability of the infrastructure to meet the customers test requirements
  • Coatings and Finish – Capability to meet the customers anti-corrosion requirements.
  • Quality Control throughout the manufacturing process.
  • Core design – choice of core material, flux density, no load losses, clamping.
  • Windings design –type of winding to be used, conductor requirements, load losses, conductor hardness.
  • Lead entry, connections and exits
  • Electrical clearances and stresses
  • Insulating cellulose and insulating oil
  • Losses and thermal capability – Optimization of losses and TCO
  • Short circuit capability and forces
  • Ancillary equipment
  • Mechanical requirements
  • Test plans
  • Transport and installation
  • Drawings
  • Functional Tests
  • Routine Tests
  • Type Tests
  • Special Tests