Abstract
With the increase in electrical equipment in More/All Electric Aircraft, 270V dc power supply systems will be needed. One method for DC interruption is forced current zero (FCZ). Based on FCZ technology with transverse-magnetic-field (TMF) contact, the spiral-type contacts are designed. Experiments with di erent currents are carried out with contact diameters being 30 mm, 40 mm, and 50 mm, and arcing surface materials Cu-W80 alloy and Cu-Cr50 alloy respectively. It is indicated by the experimental results that breaking capacity of vacuum interrupter and vacuum arc appearance are closely related to the electrode diameter and material. For the same size of electrode diameter, the breaking capacity in Cu-Cr50 is better than that in Cu-W80. With increasing electrode diameter, arc column expansion velocity and diameter increase gradually. Breaking capacity is increasing with larger contact diameter.
| Original language | English |
|---|---|
| Pages | 36-39 |
| Number of pages | 4 |
| DOIs | |
| State | Published - 2017 |
| Event | 22nd Symposium on Physics of Switching Arc, 2017 - Nove Mesto na Morave, Czech Republic Duration: 4 Sep 2017 → 8 Sep 2017 |
Conference
| Conference | 22nd Symposium on Physics of Switching Arc, 2017 |
|---|---|
| Country/Territory | Czech Republic |
| City | Nove Mesto na Morave |
| Period | 4/09/17 → 8/09/17 |
Keywords
- Breaking capacity
- Electrode diameter
- Forced current zero
- Material
- Transverse magnetic field
- Vacuum arc
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