Measurement signal coupling device with electrical isolation and electrical equipment unit comprising one such device
US8390270B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2007 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | May 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/75
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The coupling device with electrical isolation comprises at least one input signal, an output of an output signal representative of said input signal, and signal transfer means with electrical isolation receiving the input signal and supplying said output signal. The transfer means comprise at least one signal transformer having at least one primary winding to receive a primary signal representative of said input signal, switching means to switch the input signal and supply the latter to said primary winding, and electrically isolated control means of the switching means comprising a control input receiving control signals during switching periods. The electrical switchgear unit comprises one such coupling device connected to measuring resistors and to a processing unit processing electrical protection functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.