1.

What are the precautions to be taken while working at SPPT? 

Answer»

PT trolley should be isolated very carefully so as to isolate secondary terminals first and primary (HT) terminals next. When primary isolated the arrangement in the trolley make ground connection and HT terminal will be discharged at the drawn-out position. 

When fuse is blown the temporary earth should be done at the HT side of the fuse to replace the fuse. Because PT may be energised through secondary side.



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