Current transformer, protection device including such transformer and related circuit breaker
US8164402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2010 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Nov 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/523
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current transformer adapted for use in an electrical circuit. The current transformer includes a toroidal core and at least one electrical conductor having a portion passing within the toroidal core. The current transformer includes a cooling device having a body made of thermal conducting material and configured so that it has a first portion connected to the electrical conductor at a position upstream from the toroidal core and suitable for absorbing heat from the electrical conductor, and a second portion, spaced apart from the first portion, which is connected to the electrical conductor at a position downstream from the toroidal core and is suitable for transmitting heat to the electrical conductor. The thermal conducting body comprises at least one portion made of an electrically insulating material capable of preventing the current flow through the cooling device itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.