Transformer Explode
    A growing concern for Corporate Risk Managers and Insurance Companies

    Transformers are considered by Corporate Risk Managers and Insurers as the most critical equipment inside plants because
    of the large quantity of oil in contact with high voltage elements.
    Loose international transformer norms and lack of regulation

    The Norm IEC 76 only includes basic electrical measurements and does not cover mechanical design or protection. This 
    weakness, in addition to the globalisation market, has opened the door to a disturbing drop in the quality of new                  
    transformers. 
    By comparison, pressure vessels have to comply with adequate rules and controls. Such directives do not exist for           
    transformers, which are obviously more dangerous. 
    Transformer Electrical and Mechanical Protection Limits

  • Pressure Relief Valve Inadequacy: Pressure gradients developed during low impedance faults are too fast for mechanical devices. All transformers that explode are protected with Pressure Relief Valves.

  • Electrical Breaker opening time: The best breaker technology trips in 50 milliseconds, far too late to prevent the explosion, which occurs 10 to 50 milliseconds after the low impedance fault. Additionally, the tank pressure keeps increasing after breaker opening.



Transformer Explosion in USA

CAUTION

 

CAUTION

 For how long are you going to endanger your plant and company ?


 

Why do Transformers Explode

Transformers Explosion and Fire