Transformer Design Turns per Volts
In previous article, we derived a formula for turns per volts of transformer winding for transformer design. That formula has core area involved in it. Now, we are going to derive a formula for transformer design turns per volts according to transformer ratings and depending upon type of transformer and magnetic flux required.
Q in kVA So,
As, ratio of cross sectional area of core and cross sectional area of winding is constant So,
(Q is in kVA)
Value of depends upon:
- Type of Transformer (Core or Shall Type).
- Material Employed in Construction
- Choice of electric and magnetic cooling of transformer
Value of greater for shall type as that of Core type transformer of same ratings because shell type need greater magnetic material.
For different type of transformer, depending upon and other requirements, following table is developed:
Type of Transformer Value of 3- Shell Type 1.3 3- Core Type 0.6~0.7 3- Core Type (Distribution) 0.45 1- Shell Type 1~1.2 1- Core Type 0.75~0.85
By using this Table and formula we can estimate voltage per turn and by taking its inverse we can calculate turns per volts for designing transformer.
For any queries, feedback and suggestion contact us on facebook page or comment below 🙂