| 发明名称 |
LEAKAGE CURRENT DETECTION DEVICE WITH SELF-TESTING FUNCTION |
| 摘要 |
A leakage current detection device coupled to AC power supply wires carrying an AC signal, which includes: a leakage current detection circuit including a leakage current detector, the leakage current detection circuit operating during first half-cycles among positive and negative half-cycles of the AC signal to detect a leakage current of the power supply wires and to disconnect the power supply wires from an output side when a leakage current exceeding a first threshold value is detected; and a self-detecting circuit coupled to the leakage current detection circuit, operating during second half-cycles among the positive and negative half-cycles of the AC signal to test whether the leakage current detection circuit is functioning normally. |
| 申请公布号 |
US2016169981(A1) |
申请公布日期 |
2016.06.16 |
| 申请号 |
US201514614334 |
申请日期 |
2015.02.04 |
| 申请人 |
LI Chengli |
发明人 |
LI Chengli;YUE Guolan |
| 分类号 |
G01R31/42;H02H3/04;G01R35/00 |
主分类号 |
G01R31/42 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A leakage current detection device coupled to AC power supply wires carrying an AC signal, comprising:
a leakage current detection circuit including a leakage current detector, the leakage current detection circuit operating during first half-cycles among positive and negative half-cycles of the AC signal to detect a leakage current of the power supply wires and to disconnect the power supply wires from an output side when a leakage current exceeding a first threshold value is detected; and a self-detecting circuit coupled to the leakage current detection circuit, operating during second half-cycles among the positive and negative half-cycles of the AC signal to test whether the leakage current detection circuit is functioning normally. |
| 地址 |
Suzhou CN |
