A star connected load with real impedance ZL= 1-j1 Ohm per phase is connected to the secondary of a three-phase Ynyn0 connected transformer. The equivalent impedance per reduced phase of the transformer to the primary is Zeq1= 1+j5 Ohm. The nominal primary voltage is V1Ln= 5920 V and the conversion ratio is a= 10. what is the amplitude of the actual voltage falling on one phase of the specified load? (simplified equivalent circuit will be used).
A star connected load with real impedance ZL= 1-j1 Ohm per phase is connected to the secondary of a three-phase Ynyn0 connected transformer. The equivalent impedance per reduced phase of the transformer to the primary is Zeq1= 1+j5 Ohm. The nominal primary voltage is V1Ln= 5920 V and the conversion ratio is a= 10.
what is the amplitude of the actual voltage falling on one phase of the specified load? (simplified equivalent circuit will be used).
The given data about a three phase YNyn0 connected transformer is:
Star connected load is connected at the secondary side.
Per phase load impedance is Ohm.
Equivalent impedance per reduced phase of the transformer to the primary is Ohm.
The conversion ratio is given .
We know conversion ratio is the ratio of high voltage to the low voltage.
Since nothing is mentioned so we are taking step down transformer.
For step down the conversion ratio is equal to the turns ratio (ratio between primary and secondary turns).
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