Electromagnetically actuated switching device and a method for controlling the switching operations of said switching device
US8976502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching device comprising control means for controlling the switching operations of the device, the control means receiving the sensing signals generated by a sensor means; the control means are arranged so that, during execution of a switching operation, the control means send a first control signal to a power supply means to start with the supply of excitation current from a first instant onwards; determine, on the base of the information provided by the sensing signals, a second instant, at which the power supply means have to stop with the supply of excitation current, the second instant occurring before the movable plunger has reached the stop position during the movement from the start position towards the stop position; send a second control signal to the power supply means to stop with supply of excitation current from the second instant and until a movable plunger reaches the stop position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.