Impact power quality problems transformers

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Transformer is believed to be failed when component of transformer is unable to withstand operational stresses. Transformer has to withstand electrical, mechanical thermal, chemical and electromagnetic stresses throughout its normal working life and during transient conditions. The insulation of transformer starts deteriorating right from the installation, which results in reduction in mechanical strength, dielectric strength, electromagnetic and thermal integrity. Transformer fails when operating stresses exceeds the withstand capacity of the parameters discussed in this section.