three phase energy meter having a meter constant of 0.12rev/kWh is used with a potential transformer of ratio 22000/110V and a current transformer of ratio 500/5 amperes. When connected to a load of unity power factor , the disc makes 40 revolutions in 61 seconds. If the instrument readings are 110V and 5.25A, find the percentage error.

three phase energy meter having a meter constant of 0.12rev/kWh is used with a potential transformer of ratio 22000/110V and a current transformer of ratio 500/5 amperes. When connected to a load of unity power factor , the disc makes 40 revolutions in 61 seconds. If the instrument readings are 110V and 5.25A, find the percentage error.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter26: Three-phase Circuits

Section: Chapter Questions

Problem 3PA: You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a...

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