Sunday, June 10, 2018

How dry type transformers are self-extinguishing and fire resistant.

Dry compose transformers are self-stifling and heat proof as development materials utilized as a part of the dry kind transformer are aluminum, silica (quartz sand), epoxy tars which are especially flame-retardant and self-smothering materials.

What is implied without anyone else smothering 

Self quenching implies:


  • Keep the advancement of flame 



  • Hinder or back off ignition forms by evacuating any of the fire proceeding with components, for example, - warm, oxygen, fuel, exo-thermic activity. 


In dry sort transformer if the reason for flame is evacuated then the fire will be stopped without anyone else by consistently expending the vitality of flame. This is finished by the development materials of dry kind transformer which are self-stifling and fireproof it self. These materials are aluminum, silica (quartz sand), epoxy pitches and so forth.

Aluminum, self-dousing and fireproof 

1. Low softening purpose of Aluminum 

Softening purpose of Aluminum amalgams are in the vicinity of 600 and 660 degrees Celsius. This is the reason when aluminum is presented to flame condition it will start to liquefy (not consume). Additionally as temperature passes the dissolving point it won't increment until the entire liquefy down is finished.

2. Higher Warmth conductivity of Aluminum 

Warmth conductivity of Aluminum is right around four times more prominent than that of iron. Particular warmth limit of Aluminum is like iron. Reflectivity to warm radiation of flame is 80 to 90% for aluminum and for press it is 5 to 25%.

3. High warmth dissemination rate of Aluminum 

With the introduction to flame, aluminum will scatter extensive measure of warmth rapidly and in the meantime it will retain tremendous measure of warm vitality from the fire. These activities are self-quenching in nature.

Resin,fire safe 

The sap has imperviousness to fire property with the accompanying nature-


  • High protection from start of flame. 



  • Lessened smoke and smoke outflow. 



  • Lessened the rate of fire speed. 



  • Lessened the warmth discharge.

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