Welcome to Direct Edges Transformer Protection (P) Ltd

Direct Edges Transformer Protection (P) Ltd

Direct Edges Transformer Protection (P) Ltd is an ISO 9001:2015 certified company based out of Hyderabad in India and is the distributor in Indian subcontinent in association with Sergi Transformer Protector,France to sell,service and maintain FDS systems. Direct Edges Transformer Protection (P) Ltd is a Start up India venture and under Make in India scheme. The uniqueness of Direct Edges Transformer Protection (P) Ltd Distributed Sergi FDS gets activated in 5-20 milliseconds before the static pressure can develop, It is the fastest activating system in the world with proven Test Reports

Salient Features of Sergi FDS

  • Offer the main tank protection for Oil filled Transformers rated at 5 MVA to 1000 MVA.It gets activated in 5-20 milliseconds with transient pressure peak generated bt the short circuit

  • It protects the Oil filled cable boxes which is susceptible to internal faults and ruptures

  • It protects On load tap changer (OLTC) which uses Oil as insulator and prone to explosions

  • Its a virtually no maintenance product compared to other technologies currently used.

  • Live test conducted to prove the worthiness and effectiveness of Sergi FDS

  • Increase the life of transformer by 30 yrs

  • Can be retrofitted from existing transformer to the new transformer in minimum time when clients wants to change old Transformers

Why do Transformer Explode

As you’re aware, electricity is a source of heat. And in transformers, the amount of electricity passing through can generate tremendous amounts of heat. So, to increase the lifespan of the transformer, insulation is required. And the most common insulant used in transformers is insulation liquid. The insulation liquid commonly used is petroleum-based mineral oil. The mineral oil is supposed to absorb the excess heat to protect the mechanical parts of the transformer. When selecting an insulation liquid, experts usually consider the liquid’s fire point and flashpoint. The fire point of mineral oil is 165°C, and the flashpoint is 145°C.

However, when there is an overcharge, temperatures increase, it leads to the decomposition and vaporization of the mineral oil, resulting in gas bubbles. highly combustible bubbles. As temperatures continue to rise, the mineral oil will reach its flash point and ignite the vapor-gas mixture. And a further increase of temperature to the mineral oil’s fire point will now facilitate combustion on the insulation liquid’s surface. Combustion of the liquid will lead to an increase in pressure. The high pressures will force the transformer to rapture, and the result is an explosion, which releases high levels of energy and strong thermal radiation, and flaming oi

SERGI TRANSFORMER PROTECTOR,a French company founded in 1955, has expertise of more than 50 years in the field of transformer protection. SERGI TP is an ISO 9001:2015 certified company.

In 1995, SERGI TP launched an intensive research program to understand the physical phenomena of transformer explosions. As a result, SERGI TP has created, designed and distributed the TRANSFORMER PROTECTOR (TP) which is the only proven solution against transformer explosions.

During a transformer short-circuit, the TRANSFORMER PROTECTOR (TP) is activated within milliseconds by the first dynamic pressure peak of the shock wave, avoiding transformer explosions before static pressure increases.

SERGI TP has performed 62 live tests in:
− Electricite de France (EDF) High Voltage Laboratory in 2002 (28 tests);
− CEPEL Independent High voltage Laboratory in 2004 (34 tests).
During all 62 tests, the TP always succeeded in preventing the transformer from exploding.

As a result, the TP is the only proven solution that complies with a transformer fast depressurization system as defined by the National Fire Protection Association (NFPA) for all Power Plants and Substations in Code 850, Edition 2015, Recommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations.

The TP can be installed on all transformers, existing and new, rated from 0.1 MVA to 1,000 MVA and above. The TP is the sole solution that prevents transformer explosion and fire caused by low impedance short-circuits. The TP benefits are:
• Sharply reduces plant outages and related high costs
• Prevents spreading of oil fire from the transformer to its surrounding equipments
• Allows transformer repair after internal fault
• Prevents from environmental pollution
• Eliminates risk to human life
• Protects company’s reputation

The TP is included in the technical specifications of hundreds of companies in more than 75 countries and is protecting more than 3100 transformers.

In addition to the TP tests, the TP has avoided numerous transformer explosions around the world, proving its reliability.

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