Improper Structure of Distribution Transformer Assignment Help

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Improper Structure of Distribution Transformer

IE Rules, 1956 specify several standard clearances to be maintained while distribution transformers are to be erected. The standard clearances adopted to transformer structures will avert its failure table 2.

                                         Table 2: Clearances for Transformer Structures

Transformer Structure



HT bushing to ground


13 feet


ABS switch fixed contact to HG fuse


7 feet


Guy Shackle to ground


10 feet


If the length of the jumper is more than 5 inches


LT/HT pin insulators are used to fix the jumper


                  Non-adherence to these standards makes DTRs prone to failures.


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