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In a three phase system the phase currents are given as follows: 1₁=30.cos(@t+90°) A; 12=30.cos(@t+210°) A; 13=30.cos(@t
Posted: Tue Jun 07, 2022 11:13 am
by answerhappygod
- In A Three Phase System The Phase Currents Are Given As Follows 1 30 Cos T 90 A 12 30 Cos T 210 A 13 30 Cos T 1 (155.44 KiB) Viewed 40 times
In a three phase system the phase currents are given as follows: 1₁=30.cos(@t+90°) A; 12=30.cos(@t+210°) A; 13=30.cos(@t-30°) A; The neutral line current io is monitored. Reference directions of all four currents are given in the circuit diagram below. What is the value of io for balanced operation? In order to prove the balanced operation with data given above, please, find io analytically and sketch the phasors graphics scaled proportionally as good as possible by free hand. Please find proper tools (compass and ruler) or a graphics software and construct the precise phasor graphics. A Z₁ 10 NO Z3 B. Z₂ C Hints: calculate the values by using phasor transformed quantities and applying KCL on the node "n" for frequency domain. Based on the results, you can sketch the graphical situation schematically by keeping approximated geometrical relations, with a scaling e.g. 5 A correspond 1 cm. No special knowledge about three phase systems is needed. Three phase related conditions are embedded in the example. The task is to be solved by basic knowledge about circuit analysis and phasors. Look at your lecture notes for further support. n