Is it mandatory to provide fire protection for power transformers? What is the rule or limits of transformer ratings in various parts of the world?
There are various types of fire protection available-Mulsifyre ( spraying with water actuated by thermal fire detecting sensors) Nitrogen emulsion(drain and stir) system, water mist covering system -which is popular or more effective?
For underground transformers which one is preferred?
As per reported statistics, majority of transformer fires are from OIP (oil impregnated paper )Condenser bushings. RIP (resin impregnated Paper) dry type bushings will eliminate this chance. Avoiding oil filled cable boxes and line end tap-changers( or providing continuous oil filters for later case) will eliminate another potential source of fire. Rupture proof tanks will avoid fires from tank rupture. When we have all these improvements, is it necessary to provide separate fire protection for power transformers? To cover a one in thousand chance, should we spend money in 1000 transformers?
There are various types of fire protection available-Mulsifyre ( spraying with water actuated by thermal fire detecting sensors) Nitrogen emulsion(drain and stir) system, water mist covering system -which is popular or more effective?
For underground transformers which one is preferred?
As per reported statistics, majority of transformer fires are from OIP (oil impregnated paper )Condenser bushings. RIP (resin impregnated Paper) dry type bushings will eliminate this chance. Avoiding oil filled cable boxes and line end tap-changers( or providing continuous oil filters for later case) will eliminate another potential source of fire. Rupture proof tanks will avoid fires from tank rupture. When we have all these improvements, is it necessary to provide separate fire protection for power transformers? To cover a one in thousand chance, should we spend money in 1000 transformers?