Power transformer with inferior core

AI Thread Summary
A power transformer manufacturer faced material supply issues due to economic sanctions, leading to the use of inferior core materials in transformer construction. Despite following the foreign company's construction guidelines, they underestimated the impact of core material on transformer performance, particularly regarding short circuit withstand capabilities. The inferior core resulted in mechanical damage to transformer windings during severe short circuit events. This situation highlights the critical importance of core material selection in ensuring transformer reliability under fault conditions. The discussion emphasizes the need for a deeper understanding of transformer design principles to avoid such issues.
m.s.j
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A power transformer manufacturer which was located in economical boycotted country met some problems in material provision.
The core material and some other things shall be supplied by a foreign company that they work under its license. While boycotting duration they got to use inferior material in core transformer construction. Whereas they didn't have adequate base knowledge of transformer design, they followed all construction algorithms that were dictated by foreign company. They thought this instruction deviation only influenced the power losses of transformers, but in practice they found other important problem about short circuit withstand of transformers. The power transformers windings sometimes were damaged mechanically due to a sever short circuit fault current.


What is your opinion? How core material selection influenced the transformer withstand against short circuit current?
 
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Why this topic is moved?
 
Last edited:
m.s.j said:
Why this topic is moved?
Because it appears to be a homework problem.

One has to ask what in the tranformer core properties would effect the short circuit current.
 

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