Determine the error expressed as a percentage of the correct reading

Posted on 2014-01-17 11:30:00 in Engineering by ALVIN_NOBEL FRIEND

A 3-phase, 2 element energy meters has a constant of 0.2 revolution of disc per kwh. The meter is being used with a P.T. of ratio 22kv/220 V and a CT of ratio disc per kwh. The meter is being used with a P.T. of ratio 22kv/220 V and a CT of ratio 100/5A.

            If the line voltage is 220 V, current is 10A, time to complete 10 revolutions is 30 seconds on unity power factor; determine the error expressed as a percentage of the correct reading.

---

Answer Comment

No Answers Posted Yet.