Abstract
A new approach is developed to inspect the internal pressure within the vacuum switchgear by no means of magnet-exciting coil, micro-discharge threshold voltage Ud and field emission threshold voltage Ue, all of which are available in laboratory. Experimental results show that internal pressure is a function of the ratio of the micro-discharge threshold voltage to the field emission threshold voltage i.e., Ud/Ue. By this method, the internal pressure in the range of 100-10-4 Pa within vacuum chambers can be inspected without magnet-exciting coil which is required in conventional magnetron discharge method.
| Original language | English |
|---|---|
| Pages (from-to) | 473-476 |
| Number of pages | 3 |
| Journal | Journal of Shanghai Jiaotong University (Science) |
| Volume | 13 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Aug 2008 |
Keywords
- Field emission
- Internal pressure
- Micro-discharge
- Vacuum switchgear