发明授权
- 专利标题: Faulty protective earth ground circuit detection system and method
- 专利标题(中): 保护接地电路检测系统及方法
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申请号: US13435289申请日: 2012-03-30
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公开(公告)号: US08964339B2公开(公告)日: 2015-02-24
- 发明人: Kang Li , Alexander Shoshiev
- 申请人: Kang Li , Alexander Shoshiev
- 申请人地址: US MI Canton
- 专利权人: Yazaki North America, Inc.
- 当前专利权人: Yazaki North America, Inc.
- 当前专利权人地址: US MI Canton
- 代理机构: Harness, Dickey & Pierce, P.L.C.
- 主分类号: H02H3/00
- IPC分类号: H02H3/00 ; H02H9/08
摘要:
A system and method for detecting the presence of a voltage on a ground conductor which is coupled to a protective Earth (PE) terminal associated with a power source. The power source is used to apply a voltage to a device. The system may use a high impedance device coupled across a switch, with the switch being in communication with a portion of the device. A control system may monitor a voltage across the high impedance device and determine if the voltage across the high impedance device exceeds a predetermined threshold. Exceeding the predetermined threshold indicates that an unsafe voltage from the power source is present on the ground conductor. A natural high impedance path between the device and the Earth is used to provide an Earth connection through the device to the Earth during operation of the system.
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