Articles | Volume 7, issue 1
https://doi.org/10.5194/jsss-7-339-2018
https://doi.org/10.5194/jsss-7-339-2018
Regular research article
 | 
07 May 2018
Regular research article |  | 07 May 2018

Test equipment and its effect on the calibration of instrument transformers

Enrico Mohns and Peter Räther

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Cited articles

Badura, H.: Entwicklung einer Spannungswandlermesseinrichtung ESM III, Bachelor paper, Ostfalia Hochschule für angewandte Wissenschaften, Wolfenbüttel, 2015.
Braun, A., Moser, H., and Ramm, G.: Ein neuer Meßplatz zur Prüfung von Meßwandlerbürden, PTB-Mitteilungen, 103, 5/93, 1993.
GUM: JCGM 100:2008: Evaluation of measurement data – Guide to the expression of uncertainty in measurement, available at: www.BIPM.org (last access: 27 April 2018), 2008.
JCGM: JCGM 106:2012: Evaluation of measurement data – The role of measurement uncertainty in conformity assessment, available at: wwww.BIPM.org (last access: 27 April 2018), 2012.
Kahmann, M., Zayer, P., and Arzberger, M.: Handbuch Elektrizitätsmesstechnik, VDE Verlag, 3. Auflage 2017, ISBN: 978-3-8007-4403-9, 2017.
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Short summary
Test centres supplying accuracy tests for instrument transformers must provide measurement uncertainties for their quality management. In this work, ratio error and phase displacement of instrument transformers are discussed. The traceability to the national standards of PTB, the attainable uncertainty and the permitted error limits of test equipment for testing instrument transformers are presented. An example of an uncertainty budget for a current transformer of the class 0,2 S is given.