Transformer Overloaded with forced cooling air
Transformer Overloaded with forced cooling air
(OP)
I have a question. Can we allow 7.5MVA transformer with forced cooing air to run continuously with 9MVA loaded?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Transformer Overloaded with forced cooling air
|
RE: Transformer Overloaded with forced cooling air
RE: Transformer Overloaded with forced cooling air
RE: Transformer Overloaded with forced cooling air
RE: Transformer Overloaded with forced cooling air
I know that the fan packages had a certain rating for kva heat disappation, so its a no brainer on figuring this out.
look at this website for info
http://www.electricservice.com/
RE: Transformer Overloaded with forced cooling air
There are a number of assumptions and errors in your post:
"The fan package gets its voltage derived from the transformer so that their is no worry about shutting down the xfmr due to to a mishap about ventalation."
Nonsense. Fans fail. Auxiliary supplies fail. Either of these situations would cause very real problems with the transformer if it were loaded beyond its ONAN rating. Most owners would consider this cause for worry.
"Of course all fan package does is make the oil if a wet xfmr recirculate more in the xfmr."
Nonsense. The oil circulates by convection. The fan improves heat rejection from the oil by providing increased cooling to the surface of a finned radiator. If you want to increase oil circulation, fit a pump and convert the transformer to a forced oil (OFAF) or directed oil (ODAF) design. This will bring a significant increase in rating. It is not a trivial task.
regards,
----------------------------------