السلام عليكم ورحمة الله وبركاته
Dear Brothers
For the routine maintenance of our OHTL circuits, the complete isolation of our 33/66 kV transformer is done.
this isolation is done by switching off both breakers and disconnector switches at the OHTL ends
and switching on the earthing switch
From my limited experience I know that frequent switching on and off of the transformers is not recommended as the switching operation apply high stresses on the transformer
Is this correct and if yes could you provide me with any refrence that I could use as a refrence to reschedule this maintenance program
our transformer is 33/66kV 69MVA
السلام عليكم ورحمة الله وبركاته
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