Transformer Calculator Winding, Full Load current, KVA rating, Losses

Transformer winding – turns and voltage Ratio

 

Transformer Full Load Current

To calculate full load current of a Single Phase Transformer

To calculate full load current of a Three Phase Transformer

 

KVA rating of Transformer

Rating of a Single Phase Transformer

In Volts
In Amperes

KVA

Rating of a Three Phase Transformer

In Volts
In Amperes

KVA

Transformer Losses – Iron loss, copper loss

Copper Loss Calculation

Primary current
Primary Winding Resistance
Secondary current
Secondary Winding Resistance

Total Copper Loss, Pcu = w

Iron Loss or Core Loss Calculation

Eddy current Loss

 

 

co-efficient of eddy current

 

Thickness of the sheet

 

Input values Maximum Flux density "Bm" and frequency 'f' is common to eddy current loss and hysteresis loss.

Maximum flux density
frequency

Hysteresis Loss

 

hysteresis constant

Total Iron Loss in w/m3, Pi =

w/m3

Hysteresis Loss

+

w/m3

Eddy current Loss

=

watts/m3


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