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Transformer winding hep please?
A single phase transformer has a 12400volt primary with a primary to secondary turns ratio of 40:1. The rated secondary voltage for this transformer would be what volts and how do you solve this?
3 Answers
- StanleyB51Lv 49 years agoFavorite Answer
12400/40=310 V (theoretical) Losses in the core and load will alliterate this calculation slightly.
- Brian TLv 69 years ago
Should be a simple division, but it is not. Under no load, the voltgage will go up dramatically. Under full load, there will be a droop caused by ohmic losses (heat) and coupling efficiency. The best transformers run over 99.6% efficient. Use of other than copper (ie aluminum) will also introduce additional eddycurrent losses along with the ohmic losses and coupling efficiency. Add in some small lossses caused by the movement of the laminations (the 60 cycle hum) and you can still get 99.5% or better at rated current.
Source(s): Read many articles over the years on design of transformers and improvements in lamination steel (grain orientation.) and wire insulation which can translate into tighter windings and higher coupling efficiency.
