Abstract
Dielectric properties of polyethylene (PE), polyoxymethylene (POM) and ceramic glass (MACOR) are compared. Their suitability to act as a support for a resistor chain in a wideband HVDC reference divider is characterized. The support material forms a parallel capacitance to the resistive resistor chain, and a bandwidth of more than 100 kHz is needed. The frequency dependence of dielectric constant has been measured in the range 20 - 100 kHz. The depolarization current of these materials was measured to be at least 6 orders of magnitude lower than the current through the resistive chain. Neither MACOR nor PE does build up space charge which POM does. Possessing the highest dielectric constant makes MACOR well suited for the application.
Original language | English |
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Title of host publication | 2012 Conference on Precision Electromagnetic Measurements, CPEM 2012 |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 80-81 |
Number of pages | 2 |
ISBN (Electronic) | 978-1-4673-0442-9 |
ISBN (Print) | 978-1-4673-0439-9 |
DOIs | |
Publication status | Published - 3 Oct 2012 |
MoE publication type | A4 Article in a conference publication |
Event | 2012 Conference on Precision Electromagnetic Measurements, CPEM 2012 - Washington, DC, United States Duration: 1 Jul 2012 → 6 Jul 2012 |
Conference
Conference | 2012 Conference on Precision Electromagnetic Measurements, CPEM 2012 |
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Abbreviated title | CPEM |
Country/Territory | United States |
City | Washington, DC |
Period | 1/07/12 → 6/07/12 |
Keywords
- current measurement
- dielectric
- high-voltage techniques
- HVDC
- metrology