Claims
- 1. A remote-controlled circuit breaker apparatus, more particularly a multiphase circuit breaker comprising:
- (i) a switch placed in an arc extinction chamber, said switch having:
- a first contact mounted on a first conducting support;
- a second contact mounted on a second conducting support mobile with respect to the first conducting support and having an abutment surface, a resilient means coupled to said second conducting support said second contact being movable between at least an open position and a closed position, wherein it is applied against said first contact and said second conducting support is facing said first conducting support and extends substantially parallel thereto so as to be subjected to electrodynamic forces caused by short circuit currents flowing through said switch;
- (ii) a quick trip mechanism which may be set and released by means of a local manual member, said mechanism, when released, acting on said second conducting support through said resilient means for causing said second contact to pass from the closed position to the open position
- (iii) detector means which react to overcurrents by tripping said mechanism and therefor causing said second contact to pass from the closed position to the open position;
- (iv) a remote controlled electromagnet independent from the quick trip mechanism;
- (v) coupling means which comprise a mobile abutment element actuated by the electromagnet and cooperating with the said abutment surface for effecting a controlled movement of the second conducting support between said closed position and said open position;
- (vi) said resilient means acting on said second conducting support to cause the contacts to be applied against each other under a contact pressure when said quick trip mechanism is in a set position and to allow, in this set position, said controlled movement and a relative opening movement of the contacts under the effect of said electrodynamic forces which causes a limitation of said short circuit currents.
- 2. The remote controlled circuit breaker apparatus as claimed in claim 1, wherein the second conducting support is a pivoting lever having an extension provided with said abutment surface which is placed in the vicinity of the said abutment element, without being connected thereto.
- 3. The remote controlled circuit breaker apparatus as claimed in claim 1, wherein said first conducting support comprises a pivoting lever which is held in a rest position by a resilient return force of a spring and by a stop when said switch does not have short circuit currents passing therethrough, and which may move away from this position under the effect of the repulsion forces appearing between said first and said second conducting supports.
- 4. The circuit breaker apparatus as claimed in claim 1, wherein said electromagnet is returned to a rest position by a spring.
- 5. The circuit breaker apparatus as claimed in claim 1, wherein said electromagnet is polarized by at least one permanent magnet and is held in a work position by the flux of this magnet.
- 6. The circuit breaker apparatus as claimed in claim 2, wherein said electromagnet is controlled by current impulses and a mechanical engagement device is associated with said abutment element, said device having rest and work positions and passing successively from one of these positions to the other whenever said electromagnet receives a current impulse, the passage of the device to the work position causing the second contact to move in its open position.
- 7. The circuit breaker apparatus as claimed in claim 1, wherein said remote control electromagnet is disposed in a removable case or plate which is situated between a securing surface and a body containing said switch and said quick trip mechanism, said apparatus further comprising closure means adapted to close a region common to the body and to the removable case when this latter is not connected thereto.
- 8. A circuit breaker according to claim 1, wherein said first contact is a fixed contact which is mounted on a fixed conducting support.
- 9. A circuit breaker according to claim 1, wherein said coupling means comprises means for establishing an electric insulation between said second conducting support and said electromagnet.
- 10. A remote controlled circuit breaker apparatus, more particularly a multiphase circuit breaker comprising:
- (i) a switch place in an arc extinction chamber, said switch having:
- a first contact mounted on a first conducting support.
- a second contact mounted on a second conducting support mobile with respect to the first conducting support and provided with a pusher, and a resilient means, said second contact being movable between at least an open position and a closed position, wherein it is applied against said first contact and said second conducting support is facing said first conducting support and extends substantially parallel thereto so as to be subjected to electrodynamic forces caused by short circuit currents flowing through said switch;
- (ii) a quick trip mechanism which may be set and released by means of a local manual member, said mechanism, when set acting on said second conducting support for causing said second contact to pass from the open position to the closed position and when released, acting on said second conducting support through said resilient means for causing said second contact to pass from the closed position to the open position;
- (iii) detector means which react to overcurrents by tripping said mechanism and therefor causing said second contact to pass from the closed position to the open position;
- (iv) a remote controlled electromagnet independent from the quick trip mechanism, said electromagnet having a mobile armature coupled to a transmission piece provided with an abutment surface which bears on said pusher, only for causing controlled opening movements of the second contact under the action of the electromagnet, said resilient means acting on said second conducting support to cause the contacts to be applied against each other under a contact pressure when said quick trip mechanism is in a set position and to allow, in this set position, said controlled movement and a relative opening movement of the contacts under the effects of said electrodynamic forces which causes a limitation of said short circuit currents.
- 11. The circuit breaking apparatus as claimed in claim 10 wherein said second conducting support is a pivoting lever having a first pivoting axis and said pusher is actuated by a rotary transmission piece having a second pivoting axis which extends parallel to the first pivoting axis.
Priority Claims (1)
Number |
Date |
Country |
Kind |
84 17506 |
Nov 1984 |
FRX |
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Parent Case Info
This application is a continuation,
of application Ser. No. 798,667, filed Nov. 15, 1985, now abandoned.
US Referenced Citations (9)
Continuations (1)
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Number |
Date |
Country |
Parent |
798667 |
Nov 1985 |
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