| 发明名称 |
EARTHED CONNECTION DETECTION |
| 摘要 |
A mechanism is described for determining whether or not a ground connection is properly earthed by determining whether or not a potential difference exists between a voltage measuring point and a ground connection. A first capacitor is connected between the ground connection and a first power line and a first duplicating capacitor (having the same capacitance as the first capacitor) is connected between the voltage measuring point and the first power line. If the determining step determines that the potential difference does not exist, then it is determined that the ground connection is not properly earthed. |
| 申请公布号 |
US2014266236(A1) |
申请公布日期 |
2014.09.18 |
| 申请号 |
US201214352349 |
申请日期 |
2012.10.23 |
| 申请人 |
Danfoss A/S |
发明人 |
Harvest Nils-Ole |
| 分类号 |
G01R31/02 |
主分类号 |
G01R31/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A circuit comprising:
a first capacitor connected between a first power line and a ground connection; a first duplicating capacitor having a capacitance equal to said first capacitor, wherein the first duplicating capacitor is connected between the first power line and a measuring point; and a comparison circuit for determining whether or not a potential difference exists between the measuring point and the ground connection. |
| 地址 |
Nordborg DK |
