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متابعة

Why we are using ventilation on the LV / MV coils of the dry transformers?

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تم إضافة السؤال من قبل Mahmoud Radwan , TECHNICAL COORDINATOR , MOHARAM BAKHOM CONSULTANCY SERVICE
تاريخ النشر: 2014/12/21
Hatem   Talal  yousef Abulikbash
من قبل Hatem Talal yousef Abulikbash , Sr.Electrical Engineer , National Engineering Bureau

to reduce heat which occur due current passing in the primary and secondary winding for transformer due to internal impedance and eddy currents 

Mahmood Shaikh
من قبل Mahmood Shaikh , Assistant Manager Electrical & Instumetation (E&I) , Aisha Steel Mills Private Limited (Steel Industry)

In order to dissipate heat of the Transformer which is caused by Hysteresis Eddy Current, Iron or Core Losses and Copper Loss We use3 techniques either oil Immersion or force air cooling or combination of both to achieve its rated temperature in control or under monitoring in some cases  

 

Usually A class of insulation is done on MV distribution transformers in which temperature must not exceed from65ºC as higher temperature may damage insulation resistance causing transformer failure.

abanob Emil
من قبل abanob Emil , مهندس تخطيط , كولاس ريل

any ventilation is used to be insure that the inner component of  transformer or any machine get the heat out of it because the excessive heat can damage the transformer as it can melt the insulation  

suresh krishnamoorthy
من قبل suresh krishnamoorthy , Sr.Project Engineer - Electrical , kharafinational

If dry type transformers self cooling limit exceeds (During more load) , air ventilation is must to maintain room temperature as good. Better should keep Max.5 deg C diff. between inlet and outlet room air temp.

Hakeem Mohamed Ali  Jinnah
من قبل Hakeem Mohamed Ali Jinnah , Electrical Engineer , PRIME TECHNOLOGIES L.L.C, (ETA) Dubai (UAE)

in any electrical equipment ventilation is required as the losses in the equipment will be given out in form of heat.

مستخدم محذوف‎
من قبل مستخدم محذوف‎

All electrical installations need proper heat dissipation.

If this is dry transformer, generated heat is not supposed to be very high.

What type of ventilation is being used there, by the way?

If the ventilation is not by design, but needs extra ventilation. It is alarming.

It is really need to be diagnosed, and root cause has to be rectified.