| Zugriffsnummer | 37148 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | An AC power amplifier for testing instrument transformer test equipment |
| Autor(in); Institution |
Mohns, Enrico; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Fricke, Sören; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
Pauling, Florian; 2.3, Elektrische Energiemesstechnik, PTB-Braunschweig
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| Quelle/Jahr | CPEM 2016, Conference on Precision Electromagnetic Measurements: conference digest:(2016), 2 S. |
| Availability | [USB-Stick] ; file name: 110.pdf |
| ISBN | 978-1-4673-9134-4 ; 978-1-4673-9133-7 |
| DOI | |
| Verlag | [s.l.]: IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM) 2016, Ottawa, 10-15, July, 2016, Canada |
| Freie Schlagworte | Analogue power amplifier ; voltage gain ; transconductance ; test equipment ; instrument transformers |
| Zusammenfassung | This paper describes the design and setup of analogue power amplifiers for generating calibration signals for test equipment for instrument transformers. Two amplifiers have been set up for a rating of 600 VA and 70 VA, respectively. The 600 VA version is used for testing standard burdens, while the other one is used as a source for a calibrator for testing test sets for conventional and non-conventional current or voltage transformers. The amplifiers offer the possibility to switch between a voltage mode and a current mode. The bandwidth of the amplifiers covers the range from 16.7 Hz to at least 3 kHz. Different ranges between 80 V to 280 V in the voltage mode, and 2 A to 10 A in the current mode are realized with a transformer-coupled output stage. The gain accuracy is in the order of 1 %, while the stability is better than 0.01 %. The smaller amplifier will be used to set up future measurement systems in the EMRP project "Non-conventional voltage and current sensors for future power grids". |
