Results of an International Comparison of Instrument Current Transformers up to 10 kA at 50 Hz Frequency

Autor: R. Martin, Gabriella Crotti, T. Cincar-Vujovic, R. Kampfer, Enrico Mohns, C. Mester, I. Blanc, A.J. Wheaton, Jan Hlavacek, M. Schnaitt, M. Hammarquist, Emil Dimitrov, H.E. van den Brom, W. Waldmann, Jari Hällström, Renata Styblikova, Karel Draxler, Gert Rietveld, H. Cayci, Fernando Garnacho, A. Bergman, B. Paczek, E-P. Suomalainen, G. Sadkowski

Publikováno v: Draxler, K, Styblíková, R, Hlavacek, J, Rietveld, G, van den Brom, H E, Schnaitt, M, Waldmann, W, Dimitrov, E, Cincar-Vujovic, T, Paczek, B, Sadkowski, G, Crotti, G, Martin, R, Garnacho, F, Blanc, I, Kämpfer, R, Mester, C, Wheaton, A, Mohns, E, Bergman, A, Hammarquist, M, Çayci, H, Hällström, J & Suomalainen, E-P 2018, Results of an International Comparison of Instrument Current Transformers up to 10 kA at 50 Hz Frequency . in CPEM 2018-Conference on Precision Electromagnetic Measurements . IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2018, Paris, France, 8/07/18 . https://doi.org/10.1109/CPEM.2018.8500821

Traceability of the current ratio is crucial for the measurement of electrical energy in revenue metering. A comparison of the AC current ratio was therefore performed within EURAMET in the time period 2012 - 2016, using a precision CT as the traveli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dc64695d4a01930d35857de3a9f2bff
https://doi.org/10.1109/CPEM.2018.8500821

Investigating the use of multimeters to measure high value capacitors at low frequencies against the quantized Hall resistance

Autor: A. Satrapinski, E-P. Suomalainen, Pekka Immonen

Publikováno v: 2012 Conference on Precision electromagnetic Measurements.

Possibilities and limitations of using measurement system based on two sampling multimeters (DVM) for the ratio measurement of two impedances was investigated in MIKES. Calibration of a 1 µF capacitor from the quantized Hall resistance (QHR) was mad

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0eb3d2e17371660dd996e9d245e6a8ef
https://doi.org/10.1109/cpem.2012.6251060

Onsite calibration of a current transformer using a Rogowski Coil

Autor: E.-P. Suomalainen, Jari Hällström

Publikováno v: Suomalainen, E-P & Hällström, J K 2009, ' Onsite calibration of a current transformer using a Rogowski Coil ', IEEE Transactions on Instrumentation and Measurement, vol. 58, no. 4, pp. 1054-1058 . https://doi.org/10.1109/TIM.2008.2007031

This paper describes an outdoor calibration of an instrument current transformer connected to 400 kV transmission line. The method of generation of the high current and the accuracy of calibration are discussed. The reference current measuring system

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58595e7d90e95b81e067455b12933f6f
https://cris.vtt.fi/en/publications/5149c230-28d7-481b-b1f8-b7b4b1380fe8

Bilateral Comparison of 50 ¿F Capacitance and its Losses at 50 Hz

Autor: Jari Hällström, E.-P. Suomalainen, A. Bergman

Publikováno v: 2004 Conference on Precision Electromagnetic Measurements.

The aim of the project was to compare the calibration capabilities for high valued capacitance (50 μF) and its losses at MIKES-HUT (Finland) and SP (Sweden). Comparison measurements were performed using 50 Hz alternating voltage of 10 V and 200 V. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a0811aa710d4ecec99283b8cf291ea1
https://doi.org/10.1109/cpem.2004.305551

Optical voltage sensor for MV networks

Autor: Grzegorz Fusiek, Pawel Niewczas, Jari Hällström, E-P. Suomalainen, Jussi Havunen, John Nelson

Publikováno v: University of Strathclyde
Fusiek, G, Nelson, J, Niewczas, P, Havunen, J, Suomalainen, E-P & Hällström, J 2017, Optical voltage sensor for MV networks . in IEEE SENSORS 2017 . IEEE Institute of Electrical and Electronic Engineers, 16th IEEE SENSORS Conference, ICSENS 2017, Glasgow, United Kingdom, 30/10/17 . https://doi.org/10.1109/ICSENS.2017.8234104

The design and construction of an optical voltage sensor (OVS) for distributed voltage measurements on medium-voltage (MV) networks (11 kV) is presented in this paper. The sensor prototype, comprising a piezoelectric transducer and a fiber Bragg grat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccddb21f63713b6e81085432fe0adea2
https://pureportal.strath.ac.uk/en/publications/1b785285-e4d3-4def-9ab2-27606e8b5742