GB2287832A - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- GB2287832A GB2287832A GB9505590A GB9505590A GB2287832A GB 2287832 A GB2287832 A GB 2287832A GB 9505590 A GB9505590 A GB 9505590A GB 9505590 A GB9505590 A GB 9505590A GB 2287832 A GB2287832 A GB 2287832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit breaker
- indicator
- motor
- solenoid
- arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
Landscapes
- Breakers (AREA)
Abstract
An arrangement in a circuit breaker for automatically connecting a spring charging motor (3, Fig 1) with a spring charging assembly comprises a linkage 9 connected between a contact position indicator 8 and a solenoid 6 for closing the circuit breaker and a switch 1 connected with the motor and interacting with the indicator 8 whereby the position of the indicator 8 controls operation of the motor to charge the operating springs when the circuit breaker contacts are open. When the solenoid 6 is operated to close the circuit breaker, the indicator 8 moves to maintain the switch 1 open so as to prevent operation of the motor. When the solenoid 6 is deenergised, the indicator 8 is released to allow the motor to recharge the springs. <IMAGE>
Description
CONNECTOR FOR CIRCUIT BREAKER
This invention relates to a connector for a circuit breaker.
According to the present invention an arrangement for automatically connecting a circuit breaker operating spring charging motor with the circuit breaker operating spring charging assembly comprises a linkage assembly connecting between a circuit breaker contact position indicator and a charging motor operating solenoid; and a limit switch interfacing the indicator and connecting with the motor operating solenoid; whereby the position of said indicator controls operation of said charging motor to charge the circuit breaker operating springs when the circuit breaker contacts are in an open position.
The position indicator may comprise a flag and the limit switch a normally-closed switch. Preferably, the linkage assembly includes a lever connecting between the solenoid and the contact position indicator.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, of which:
Figure 1 is a schematic circuit diagram of a circuir breaker incorporating an embodiment of the present invention; and
Figure 2(a) is a diagrammatic end view of the embodiment of Figure 1; and
Figure 2(b) is a diagrammatic top view of the contact portion of the embodiment of Figure 2(a).
The closed solenoid maintained anti-pump shown on
Figures 1, 2a and 2b is designed to be used with a power circuit breaker motor operator mechanism.
The circuit in Figure 1 is shown with circuit breaker closing springs discharged and main breaker contacts open.
The "G" limit switch 1 is attached to the charging system.
The normally closed "G" contact 2 opens when the charging system is in the charged position which cuts off the motor 3. The normally opened contact 4 closes at the same instant electrically enabling a remote close via a revert to their original positions when the charging system rotates away from the fully charged position during closing and when the closing solenoid 6 is de-energized.
The closing solenoid 6 is energized through the normally open "G" contact 4 and the customer provided remote close switch 5. The normally open "G" contact 4 is closed when the motor 3 has charged the closing springs and has been cut-off by the normally closed contact 2 opening.
The closing solenoid 6 when energized activates the closing linkages of the breaker 7 and additionally maintains an anti-pump flag 8 up against the motor limit switch "G" 1 that keeps the normally closed contact 2 to the motor 3 open preventing it from operating and pumping the breaker.
The normally open contact 4 that energized the closing solenoid 6 is held closed by the anti-pump flag 8 until such time that the customer provided remote close switch 5 is opened. When the remote close switch 5 is opened, the closing solenoid 6 is de-energized releasing the anti-pump flat 8, allowing the charging cycle to resume.
Claims (5)
1. An arrangement for automatically connecting a circuit breaker operating spring charging motor with the circuit breaker operating spring charging assembly comprising:
a linkage assembly connecting between a circuit breaker contact position indicator and a charging motor operating solenoid; and
a limit switch interfacing the indicator and connecting with the motor operating solenoid;
whereby the position of said indicator controls operation of said charging motor to charge the circuit breaker operating springs when the circuit breaker contacts are in an open position.
2. The arrangement of claim 1 wherein said position indicator comprises a flag.
3. The arrangement of claim 1 wherein said limit switch comprises a normally-closed switch.
4. The arrangement of claim 1 wherein said linkage assembly includes a lever connecting between said solenoid and said contact position indicator.
5. An arrangement substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9405724A GB9405724D0 (en) | 1994-03-23 | 1994-03-23 | Closed solenoid maintained anti-pump |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9505590D0 GB9505590D0 (en) | 1995-05-03 |
| GB2287832A true GB2287832A (en) | 1995-09-27 |
| GB2287832B GB2287832B (en) | 1998-06-24 |
Family
ID=10752350
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9405724A Pending GB9405724D0 (en) | 1994-03-23 | 1994-03-23 | Closed solenoid maintained anti-pump |
| GB9505590A Expired - Fee Related GB2287832B (en) | 1994-03-23 | 1995-03-20 | Arrangement for automatically connecting a circuit breaker |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9405724A Pending GB9405724D0 (en) | 1994-03-23 | 1994-03-23 | Closed solenoid maintained anti-pump |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9405724D0 (en) |
-
1994
- 1994-03-23 GB GB9405724A patent/GB9405724D0/en active Pending
-
1995
- 1995-03-20 GB GB9505590A patent/GB2287832B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB9505590D0 (en) | 1995-05-03 |
| GB2287832B (en) | 1998-06-24 |
| GB9405724D0 (en) | 1994-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100320 |