Abstract
Partial discharge calibrators need to be periodically calibrated traceable to national standards. VTT MIKES, the National Metrology Institute (NMI) of Finland, has official expertise to calibrate the apparent charge of PD calibrators from 1 pC to 100 nC according to IEC 60270. Recently, VTT MIKES has developed techniques to measure charges as low as 0.01 pC with 3 % uncertainty (k = 2). VTT MIKES has participated to an intercomparison of four NMI’s in 2018 and the results indicate that VTT MIKES can both expand their official measurement capabilities and lower their uncertainties. This paper presents VTT MIKES’s precision calibration system for PD calibrators. Additionally, an overview of commercial PD calibrators’ performance is provided and compared to the requirements of IEC 60270. Data is based on the calibrations performed during the last 10 years.
| Original language | English |
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| Title of host publication | Proceedings of the 26th Nordic Insulation Symposium, NORD-IS 19 |
| Publisher | Nordic Insulation Symposium |
| Pages | 6-9 |
| DOIs | |
| Publication status | Published - 8 Aug 2019 |
| MoE publication type | A4 Article in a conference publication |
| Event | 26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 - Tampere, Finland Duration: 12 Jun 2019 → 14 Jun 2019 http://www.tut.fi/nordis19/ |
Publication series
| Series | Proceedings of the Nordic Insulation Symposium |
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| Volume | 26 |
| ISSN | 2535-3969 |
Conference
| Conference | 26th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 19 |
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| Country/Territory | Finland |
| City | Tampere |
| Period | 12/06/19 → 14/06/19 |
| Internet address |
Keywords
- partial discharges (PD)
- calibrators
- measurement uncertainty
- calibration