Calibration of test systems for measuring power losses of transformers

Petersons, O.; Mehta, S.P.

doi:10.6028/nbs.tn.1204

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…Much attention has been paid to have a self-contained system that would require minimal calibrations from outside. The results presented in this paper demonstrate that predictions of system performance given earlier [1] are valid.…”

Section: Discussionsupporting

confidence: 65%

“…The calibration and adjustment of the standard capacitors has been discussed previously [1]. In approximately two years since the original calibration, no changes have been observed in the phase angles of capacitors.…”

Section: Accuracy Verificationmentioning

confidence: 99%

“…Depending upon the power factor of the load that is measured, the phase-angle uncertainty of the measurement system must be maintained in the 10-100-j1.rad range [1], [2].…”

Section: Introductionmentioning

confidence: 99%

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An active high-voltage divider and phase shifter

Petersons¹,

Mehta²

1987

IEEE Trans. Instrum. Meas.

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An instrument combining the functions of an active high voltage divider and a phase shifter designed to yield small phase-angle uncertainties within 20 JLrad is described. It is based on a circuit employing a feedback amplifier and a controlled source. The presence of the controlled source greatly reduces the potential for dynamic instabilities of the feedback loop and effectively eliminates the errors associated with the finite gain of the amplifier. Design and construction details and the results of the accuracy evaluation are presented.

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Section: Discussionsupporting

confidence: 65%

Section: Accuracy Verificationmentioning

confidence: 99%

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An active high-voltage divider and phase shifter

Petersons¹,

Mehta²

1987

IEEE Trans. Instrum. Meas.

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Phase verification of power test systems

Clarke

Hess

1993

IEEE Trans. Instrum. Meas.

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IEEE Guide for Transformer Loss Measurement

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No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Abstract: Information and general recommendations of instrumentation, circuitry, calibration, and measurement techniques of no-load losses (excluding auxiliary losses), excitation current, and load losses of power and distribution transformers are provided. The guide is intended as a complementto the test code procedures given in Clause 8 and Clause 9 of IEEE Std C57.12.90-1999.

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Calibration of test systems for measuring power losses of transformers

Cited by 6 publications

References 10 publications

An active high-voltage divider and phase shifter

An active high-voltage divider and phase shifter

Phase verification of power test systems

IEEE Guide for Transformer Loss Measurement

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