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...
Hi,
We are manufacturing distribution and power transformers with copper winding. We are considering to shift to aluminium because of cost aspects. We are not sure about whether it is worthy to choose cost minimization instead of efficiency. Is there any one who experienced the difference or...
Thank you Bagman2524. Your assumption is correct:) I also considered that it is not a high acceleration value and it is negligible for these transformers. But you know it is the client and wants calculations. Have you ever experienced any kind of calculations or know any literature about the...
We are preparing for a transformer tender (25-500 kVA rating 11kv/0,433kV ONAN distribution transformers) and it is written (in tech. requirements) that "transformers will stand earthquakes 0,5g in horizontal and 0,25g vertical limit. manufacturer will supply needed equipments and calculations."...
How to define these values most approximately? They are all about cooling of the transformers and dynamic capability, right? These values are approximate values but always there appears penalties defined in the tender techn. specs for out of standard values.
Thank you dpc...
I want to ask some more. if you can answer or show the way to do I'll be glad. How can I calculate maximum continuous power rating of a transformer and duration of overload (for %25, %50 etc.)? I have the other parameters and specifications which may be needed. Thanks a lot...
