USE OF A CURRENT SOURCE FOR CALIBRATING AN AUTOMATIC TRANSFORMER TEST SET |
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| Karel Draxler, Renata Styblíková, Michal Ulvr |
- Abstract:
- This paper describes an innovative procedure for calibrating sets for evaluating instrument current transformer (ICT) errors. The innovation lies in the use of a current source for generating a measured current. There is an adjustable current source at 50 Hz mains frequency with a current transformer on its output. The internal impedance must be sufficiently high to eliminate the methodic error due to calibration. Calibration is carried out by means of a measuring system controlled by a PC through an IEEE 488 bus. Known values of the simulated ratio error and phase displacement are compared with the values measured by the device that is being tested. A software tool determines the simulated and measured error at each calibration point and determines whether the instrument that is being tested fulfils the parameters stated by the manufacturer.
- Download:
- IMEKO-TC4-2008-010.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
- Title:
- XVIth IMEKO TC4 International Symposium on Electrical Measurements and Instrumentation (together with 13th IMEKO TC4 Workshop on ADC Modelling and Testing)
- Place:
- Florence, ITALY
- Time:
- 22 September 2008 - 24 September 2008