Use of Lock-in Amplifier for Calibrating an Instrument Current Transformer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F14%3A%230000835" target="_blank" >RIV/00177016:_____/14:#0000835 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1109/I2MTC.2014.6860839" target="_blank" >http://dx.doi.org/10.1109/I2MTC.2014.6860839</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/I2MTC.2014.6860839" target="_blank" >10.1109/I2MTC.2014.6860839</a>
Alternative languages
Result language
angličtina
Original language name
Use of Lock-in Amplifier for Calibrating an Instrument Current Transformer
Original language description
Errors of instrument current transformers (ICT) are mostly determined using a comparative method. The difference between the secondary currents (magnitude and phase displacement) of a standard and of the ICT under test is evaluated by means of special systems which display the errors of the ICT calibrated in relation to the standard. These systems can evaluate errors in a certain range of measured currents (mostly 5% - 120% of the rated value of the measured current) and only for certain transformationratios of the standard and the ICTs under test. Measurements for smaller primary currents or for different ICT transformation ratios show a bigger error, or their accuracy is not generally determined. Due to increasing demands on measurement and energy saving, determining ICT errors at 1% of the primary current rated value or lower is now a topical issue. The use of a lock-in amplifier, as described in this paper, enables the evaluation of differences between a standard and an ICT calibr
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JB - Sensors, detecting elements, measurement and regulation
OECD FORD branch
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Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
2014 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC) PROCEEDINGS
ISBN
978-1-4673-6386-0
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
732-735
Publisher name
IEEE
Place of publication
Montevideo, URUGUAY
Event location
Montevideo, URUGUAY
Event date
Jan 1, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000346477200141