2. A l10006,600 V, 3-9, transformer has a star-connected primary and a delta-connected secondary.It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9lagging and an efficiency of 92 per cent. Calculate (6) motor line and phase currents (i) transformersecondary current and (i) transformer primary current.[(a) Motor: I, =1 126.3 A (b) phase current 73 A (c) 75.8 A]

According to question we have to calculate (1) motor line and phase currents (ii) transformer…

2. Al1,000/6,600 V,3-0, transformer has a star-connected primary and a delta-connected secondary. It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9 lagging and an efficieney of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer secondary current and (ii) transformer primary curent. [(a) Motor: =1 =126.3 A (b) phase current 73 A (e) 75.8 A]

2. Al1,000/6,600 V,3-0, transformer has a star-connected primary and a delta-connected secondary. It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9 lagging and an efficieney of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer secondary current and (ii) transformer primary curent. [(a) Motor: =1 =126.3 A (b) phase current 73 A (e) 75.8 A]

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.63P: A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a...

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