| 摘要 |
<p>An ac hybrid switching system where a power electronic device (figure 2) is used to switch current, and a mechanical device (figure 1) is used to provide physical isolation when the contacts (5, 6) are open and a low resistance current path when the contacts are closed. Arc erosion of the contacts is minimised. The device requires reduced cost contact materials and provides an extended lifetime performance over conventional switching systems.</p> |
