Hermetically sealed transformer calculation
Hermetically sealed transformer calculation
(OP)
Hi,
I have a problem with the pressure&heat calculation of hermetically sealed oil xformers. Xformers are ONAN type and cooling is done with corrugated walls. Since design of hermetically sealed xformers are a bit different from pressure and cooling point of view. Is there anyone who can give any related standard number or calculation? Thanks for help
With Respect...
I have a problem with the pressure&heat calculation of hermetically sealed oil xformers. Xformers are ONAN type and cooling is done with corrugated walls. Since design of hermetically sealed xformers are a bit different from pressure and cooling point of view. Is there anyone who can give any related standard number or calculation? Thanks for help
With Respect...






RE: Hermetically sealed transformer calculation
If the inside height of the tank was 60", then there would be 6" air space and the oil level would be 54".
Yes you can calculate expansion of the oil, the tank expansion, how much air/gas is adsorbered in the oil at the higher temperature, copper or aluminum expansion, deformation of the tank, how much the air compresses, top oil and bottom oil tmperatures and probably some other things.
Are you checking someone else's design or designing a transformer.
Designing a large transformer without any design guide lines is a MAJOR task.