ron
Senior Member
- Location
- New York, 40.7514,-73.9925
Harmonics can cause overloading and overheating in the transformer. That is how the K-Rating for transformers came about. Is the transformer K-Rated?
Neutral Current and Heat Generation
- Thread starter death900
- Start date
Thank you everyone for your inputs so far. We have gotten information back from the vendor on the transformer resistance and the neutral current is not contributing to any significant heat rejection.
That being said we do have around 10.5% THD. I dont have individual values for each harmonic level, but is there a calculation out there that can be used to calculate heat dissipation from harmonics?
That being said we do have around 10.5% THD. I dont have individual values for each harmonic level, but is there a calculation out there that can be used to calculate heat dissipation from harmonics?
zbang
Senior Member
- Location
- Roughly 5346 miles from Earls Court
That's only 90C, or only 50C above the supposed ambient of 40, should be well within the rating of the transformer. Sure, that's not cool, but what was expected?
(It would be useful to fill in the phase currents, transformer size, and maybe some other into. Have a photo of the ratings plate?)