Operating mechanism for a circuit interrupting device
US4203083A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Aug 3, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bus-mountable, circuit-interrupting device, including an interrupting unit and a novel line-potential, manually-resettable operating mechanism for the unit, is usable in circuits in which faults may exceed the interrupting capability of the unit. A normally engaged pair of contacts in the unit is separable within an arc-extinguishing medium. The operating mechanism includes a robust, stored-energy operator, for separating the contacts, and a tripping mechanism, which selectively releases the stored operating energy. The tripping mechanism normally prevents release of the stored operating energy, and includes a high mechanical advantage lever-link system which permits a low latching force to counteract the stored operating energy. A ratchet-solenoid combination in the tripping mechanism selectively removes the low latching force. If a circuit fault occurs, the solenoid moves an arm past, and moves, the ratchet in a first direction, which does not remove the low latching force, but rather stores energy capable of moving the arm in a second direction. Arm movement in the second direction, which occurs immediately in the case of a fault within the interrupting capability of the inter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.