Leakage resistance detector and alarm circuit
US4947155A · kind A · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1988 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Jun 24, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2200/26
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved detector and alarm circuit for use with electric apparatus which is connected to power lines and where the body of the apparatus is insulated from ground is disclosed. This circuit varies the response time of an alarm in accordance with the magnitude of a sensed voltage thereby reducing the response time as the potential danger increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.