Sergi Transformer Protector is the result of years of extensive testing and provides transformer explosion and fire protection.

 

The system can be fitted to new transformers as well as retro-fitted to existing installations.

 

It is particularly beneficial in confined spaces such as underground substations, urban areas, and on offshore platforms where explosion damage would go far beyond the destruction of the transformer.

 

Sergi TP Logo

Transformer Explosion Fire Protection

 

The Sergi Transformer Protector is a concept that can be applied to all oil-filled transformers up to 1,000 MVA and larger.It serves to:

  • Depressurise tanks within milliseconds.
  • Avoid contact between air (oxygen) and the evacuated explosive gases (Hydrogen, Acetylene, etc).
  • Separate gases from the oil.
  • Channel the flammable gases away from the transformer to a remote area.
  • Eliminate explosive gases in the transformer by injecting an inert medium (Nitrogen) into the tank and associated equipment.
  • Quickly bring the transformer to a safe condition for repair after a short -circuit

 

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.

 

Existing Transformer Electrical and Mechanical Protection Limitations

 

Pressure Relief Valves prove inadequate: pressure gradients developed during low impedance faults are too fast for mechanical devices.

During tests: All transformers that exploded were protected with Pressure Relief Valves.

 

Buchholz and Rapid Pressure Relay inefficiency: transformer electrical protectors are not designed to react to steep pressure gradients.

During 62 TRANSFORMER PROTECTOR tests, the Buchholz always failed to detect any gas and oil movement or pressure variation.

 

Electrical Breaker opening time: the best breaker technology trips in 50 milliseconds, far too late to prevent the explosion, as the TP tests have demonstrated that the first Mega Joule produces 2,3 m3 (80 ft3) of gas during the first milliseconds.

 

The Sergi Transformer Protector system can be fitted to new transformers as well as retro-fitted to existing installations.

 

It is particularly beneficial in confined spaces such as underground substations, urban areas, and on offshore platforms where explosion damage would go far beyond the destruction of the transformer.

 

Industrial Apparatus Consultants Limited -104A Baker Street, London. W1U 6TN - Tel: 020 7486 6474 - Fax: 020 7487 2757

Email:

© 2015 Industrial Apparatus Consultants Limited

uk Spill Logo