Problem # 2-3/4 A core-type transformer rated at 37.5 kVA, 2400 – 480 V, and 60 Hz has a core whose mean length is 1.07 m and whose cross-sectional area.

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Presentation transcript:

Problem # 2-3/4 A core-type transformer rated at 37.5 kVA, 2400 – 480 V, and 60 Hz has a core whose mean length is 1.07 m and whose cross-sectional area is 95 cm2. The application of rated voltage causes a magnetic field intensity of 352 A-t/m (rms), and a maximum flux density of 1.505 T. Determine the number of turns in the primary and secondary. Determine the magnetizing current when operating as a step-up transformer.

l=1.07m A=95cm2

Number of Turns

Magnetizing Current as a Step-Up Transformer