Three phase systems - current magnitude

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SUMMARY

The discussion focuses on calculating the phase voltage in a three-phase system, where the phase voltage is determined to be 415 Volts by multiplying the line voltage by the square root of 3. Participants are seeking equations to further analyze the system and are encouraged to share diagrams of their calculations for clarity. The conversation highlights the importance of visual aids in understanding electrical concepts.

PREREQUISITES
  • Understanding of three-phase electrical systems
  • Knowledge of voltage relationships in AC circuits
  • Familiarity with the square root of 3 in electrical calculations
  • Ability to interpret and create electrical diagrams
NEXT STEPS
  • Research the derivation of phase and line voltage equations in three-phase systems
  • Learn about the implications of phase voltage in power distribution
  • Explore tools for creating electrical diagrams, such as AutoCAD Electrical
  • Study the effects of load balancing in three-phase systems
USEFUL FOR

Electrical engineers, students studying power systems, and professionals involved in designing or analyzing three-phase electrical networks.

GuthrieF
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Homework Statement
A three phase delta connected load, each phase of which has an inductive reactance of 40Ω and
a resistance of 25Ω (connected in series), is supplied from the secondary of a three phase star
connected transformer which has a phase voltage of 240V. With the aid of a circuit diagram
calculate
(a) voltage magnitude across each phase of the load
(b) the current magnitude in each phase of the load
(c) the magnitude of the transformer winding currents
(d) the total real power and power factor
Relevant Equations
Vph=root3.Vl
total real power = VIcos angle
pf = P/S
so far on this question i have calculated the phase voltage as 415 Volts using by multiplying the line voltage by root 3. i know how to calculate (d) but am struggling with finding the equations to satisfy
 
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Can you attach a diagram of your work so far? Thanks.
 

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