Method for sensing welded contacts on a switching device |
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| 申请号 | US14266198 | 申请日 | 2014-04-30 | 公开(公告)号 | US09897656B2 | 公开(公告)日 | 2018-02-20 |
| 申请人 | Carrier Corporation; | 发明人 | Jeffrey P Lothamer; Daniel L Kelly; | ||||
| 摘要 | A method for sensing a welded relay contact when breaking both sides of a power line on a HVAC device including the steps: applying a first signal to one of a pair of switching devices; electronically sensing a second signal, with a sensing device, whether the other of said two switching devices is welded closed; and sending a third signal from the sensing device indicative of whether the other of said two switching devices is welded closed. | ||||||
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| 说明书全文 | |||||||
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