High voltage circuit breaker
US3995198A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Oct 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/59
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a high voltage circuit breaker arranged to be connected in series with a conductor for breaking the flow of current through the conductor, the breaker including at least two identical breaks, capacitors shunting all of the breaks for producing a voltage gradient, at least one resistor connected in shunt with at least one of the breaks, and a switch connected with the resistor and arranged to be operated in a manner such that it does not make or interrupt a current, the operation of the switch is controlled by a control device connected for operating the switch and a current transformer connected to the control device and arranged for monitoring the current flow through the conductor to provide an output which causes, during a break operation of the circuit breaker, the closing of the switch shortly before the simultaneous opening of all of the breaks only when the current through the conductor exceeds a certain value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.