Abstract
The paper reports about the role of humidity and frequency on the electrical breakdown of air in uniform field gaps. Experiments were conducted on Rogowski profile electrodes with gap lengths ranging from 5 to 53 mm at power frequency (60 Hz) and frequencies in the range of 18-50 kHz, corresponding to the VLF/LF bands used for long-range communication. The results show that breakdown voltage at VLF decreases with humidity, opposite to that observed at 60 Hz. Breakdown mechanisms for explaining this important phenomenon are proposed. A correction factor to calculate breakdown voltage as a function of humidity for VLF is presented.
Original language | English (US) |
---|---|
Article number | 5293953 |
Pages (from-to) | 1397-1403 |
Number of pages | 7 |
Journal | IEEE Transactions on Dielectrics and Electrical Insulation |
Volume | 16 |
Issue number | 5 |
DOIs | |
State | Published - Oct 2009 |
Keywords
- Absolute humidity
- Air
- Antenna
- Electric breakdown
- High voltage
- Humidity
- Radio frequency
- Relative humidity
- VLF
- Very Low Frequency
ASJC Scopus subject areas
- Electrical and Electronic Engineering