Use of Lock-in Amplifier for Calibrating an Instrument Current Transformer

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Use of Lock-in Amplifier for Calibrating an Instrument Current Transformer

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Use of Lock-in Amplifier for Calibrating an Instrument Current Transformer

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

JB - Senzory, čidla, měření a regulace

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2014 IEEE INTERNATIONAL INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE (I2MTC) PROCEEDINGS

ISBN

978-1-4673-6386-0

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

732-735

Název nakladatele

IEEE

Místo vydání

Montevideo, URUGUAY

Místo konání akce

Montevideo, URUGUAY

Datum konání akce

1. 1. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000346477200141