Shock resistant breaker shunt trip
US6388859B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | May 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H83/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shunt trip assembly having a tripping solenoid and a locking solenoid selectively blocks movement of the tripping solenoid to prevent inappropriate tripping of a circuit breaker during shock loading thereof. The tripping solenoid includes a tripping plunger that is longitudinally translatable along a tripping path to operatively engage a trip button of the circuit breaker. The locking solenoid includes a locking plunger that is selectively translatable along a locking path to selectively block movement of the tripping plunger, the locking path being substantially perpendicular to the tripping path. A longitudinally-facing first abutment surface on the tripping plunger is engaged by the locking plunger to prevent inappropriate movement of the tripping plunger during shock loading. A peripherally-disposed second abutment surface on the tripping plunger prevents misconfiguration of the shunt trip assembly after the shunt trip assembly has been deenergized. The tripping solenoid and locking solenoid are simultaneously energized and deenergized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.