Part i ii and iii have been already answered. Please show steps to obtain part iv only. i have attatched parts i to iii.
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
Part i ii and iii have been already answered. Please show steps to obtain part iv only. i have attatched parts i to iii.
You have been privately contacted to rewire a site. During a visit, you observed that the building receives a 400V, 60Hz, star-connected, three-phase supply from the utility. There are also several three-phase equipment that require a 230V three-phase supply. You have decided to utilize three single-phase, dry type transformers to step down the building’s incoming supply to a 230V, delta-connected supply for the equipment. All the three-phase machinery can be modelled as an equivalent balanced three-phase star-connected load with a resistance and inductance of 0.5Ω and 0.16mH respectively per phase. Some preliminary calculations and analysis are required before starting the wiring design.
Assuming the transformer is ideal and lossless and that all neutrals are grounded, calculate:
i)The phase voltages of the star-connected load.
ii)The line currents between the transformer and load
iii)The phase currents in the transformer secondary windings
iv)The total apparent power supplied to the load
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