US1720566A - Circuit-controlling device - Google Patents
Circuit-controlling device Download PDFInfo
- Publication number
- US1720566A US1720566A US225114A US22511427A US1720566A US 1720566 A US1720566 A US 1720566A US 225114 A US225114 A US 225114A US 22511427 A US22511427 A US 22511427A US 1720566 A US1720566 A US 1720566A
- Authority
- US
- United States
- Prior art keywords
- current
- circuit
- movable
- conducting member
- bridging
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
Definitions
- the invention relates to circuit-controlling devices and has for its principal object the provision of a circuit interrupter capable of quickly interrupting the circuit when the 5 current has a tendency to increase suddenly in order to protect electrical apparatus such as motors, generators,transformers, or the like, connected in the circuit.
- the preferred form of the present invention provides a circuit-interrupter having a magnetizing winding of high reactance to the terminals of which is connected a circuit of relatively low reactance having a movable current-conducting member included therein which is subjected to a combination of electro-dynamic forces to effect rapid operation of a contact to interrupt the circuit when the current tends to increase rapidly.
- a circuit-interrupter having a magnetizing winding of high reactance to the terminals of which is connected a circuit of relatively low reactance having a movable current-conducting member included therein which is subjected to a combination of electro-dynamic forces to effect rapid operation of a contact to interrupt the circuit when the current tends to increase rapidly.
- the current-conducting member with a'magnetic field produces a very-rapid movement thereof to operate the switch member associated therewith to the circuitopening position.
- the magnetic field for effecting operation ofthe movable currentconducting member preferably is setup by the high reactance magnetizing winding.
- the movable current-conducting member is disposed in close proximity to a second current-conducting member with ductor and theobtained.
- FIG. 1 illustrates in simplified diagrammatic form, a circuit-interrupter embodying the invention
- FIG. 2 is a detailed representation of a preferred arrangement of the operating curthe connections arranged so that a strong repulslon between the movable current-consecond current-conductor 1s v as shown diagrammatically comprises the spaced apart contacts 10, 11, and the cooperating bridging contact 12.
- the bridging contact 12 is mechanically connected with a movable current-conductor 13 which is made very light so as to permit'rapid operation thereof.
- the movable current-conductor 13 and the magnetizing winding 14 having the magnetic structure 15 for providing a high reactance, are connected in multiple in the circuit Li, L controlled by the contacts 10, 11, and the bridging member 12of the interrupter.
- the movable current-conductor branch of the parallel circuit is made of'relatively high resistance as compared to the branch containing the magnetizing winding 14. Hence under stable conditions of current flow the value of the current through the movable conductor branch is only a small part. of the current through the magnetizing winding.
- the movable current-conducting member 13 is subjected to an electro-dynamic.
- the electro-dynamic force for operating the movable current-conductingmember 13 may be obtained in the manner illustrated in Fig. 2.
- the conductor 16 which is connected to thecontact 11 of the circuit-interrupter is disposed in close par- 7 allel alignment with the movable currentconducting member 13, which is electrically and mechanically connected with-the bridging contact 12.
- the conductor 16 and the movable current-conducting member 13 are formed of triangular cross sectional shape as shownin Fig. 3. This permits the conductors to be located closely adjacent each other so as to obtain the maximum repelling electro-dynamic action therebetween.
- movable current-conducting member 13. is
- Fig.4 shows the construction of a circuit-interrupter in which the movable current-conducting member .13 connected with the movable bridging member 12 is subjected both to the repelling action of the conductor 16 and the reaction with a magnetic field.
- the magnetic field is provided by means of the magnetic structure 15, which is associated with the magnetizing winding 14.
- the pole faces of the magnetic structure 15' preferably are located on either side of the movable current-conducting member 13, as indicated in the drawing.
- the magnetizing winding 14 may also be provided with a separate magnetic circuit 15 for producing a high reactance in the winding.
- the movable current-conducting member 13 is supported by the resilient spring 18 so as to hold the bridging contact 12 in engagement with the spaced apart contacts 10 and 11.
- the pressure of the spring 18 upon the movable current-conducting member 13 may be regulated or entirely eliminated by means of the lever 19.
- the operationof the circuit-interrupter shown in'Fig. 4 is as follows With the bridging contact 12- in engagement with the contacts 10 and 11, a circuit is completed for the flow of current through the interrupter in the directions indicated by the arrows L L
- the current flowing in the terminal conductor L divides between the movable current-conducting member 13 and the magnetizing winding 14 in accordance with the relative resistance of the elements under stable current conditions.
- the resistance of the movable current-conducting member 13 is large with respect to the resistance of the magnetizing winding 14. Consequently, the ma'or por- -tion of the current flows through t e magmember 13.
- the conductor 16 carries the.
- the circuit would be interrupted only temporarily and the bridging contact would automatically return to the circuit closing position.
- the spring 18 is rendered inefiective by operation of the lever 19, the bridging contact 12 and the movable current-conduct ing member 13 will remain in the circuitopening position.
- An electroresponsive device comprising a movable current conducting member, a second current-conducting member disposed in cooperating relation with said first member to set up an elcctm-dynamic force for operating the first member upon current flow through the said members, and means for setting up a magnetic field in cooperating relation with said movable current-conducting member to increase the speed of operation thereof upon said current flow through said movable member.
- An electroresponsive device comprising means for setting up a magnetic field, a movable current-conducting member disposed in said field to be operated upon current flow in the member, and a second current-conducting member cooperating with said first member to set up an electro-dynamic force for increasing the speed of operation of said movable member upon said current flow therein.
- An electroresponsive device comprising a movable current-conducting member, a second current-conducting member cooperating with said first member toproduce an electrodynamic force for operating the movable current-conducting member upon current flow through said members, and an inductive device having a winding connected in shunt relation with said movable current-conducting member and in series relation with said second current-conducting member for increasingthe speed of operation of the movable member upon said current flow.
- a circuit-controlling device comprising a pair of spaced apart contacts, a movable bridging member therefor, a relatively high resistance current-conducting member connected for movementwith the bridging mem- V 5.
- a circuit-interrupter comprising a mov able switch member, a magnetizing winding connected in the circuit controlled by the switch member, a movable current-conducting' member electrically connected in multiple relation with said winding and disposed in the magnetic field of said winding and mechanicall connected with said switch member for e ecting operation thereof to the circuit opening position, a second current-conducting member connected in the circuit controlled by the switch and cooperating with said movable current-conducting member to set up an electro-dynamic force to eliect operation of the switch member to the circuitopening position upon a predetermined flow of current in the circuit controlled thereby.
- a circuit-interrupter comprising a pair of spaced apart contacts, a bridging member therefor, a magnetizing winding connected to one of said contacts in the circuit controlled by the bridging member, a movable current- :onducting member electrically connected in multiple relation with said magnetizing vinding and disposed in the magnetic field of said winding and mechanically connected with said bridging member to elfect operation thereof out of engagement with said spaced apart contacts, and a conductor connected to the other of said contacts and disposed in cooperating relation with said movable current-conducting members to set up an electro-dynamic force therebetween for operating the bridging member out of engagement with the said spaced apartcontacts upon a predetermined flow of current in the circuit controlled by the interrupter.
- a circuit-interrupter comprising a pair of spaced apart contacts, a movable bridging member therefor, a magnetizing winding connected to one of said contacts in the circuit controlled by the interrupter, a movable current-conducting member mechanically connected to the bridging contact and electrically connected between the terminals of said magnetizing Winding and disposed in the magnetic field of said winding to effect operation ofsaidbridgingcontact to the circuit-opening position upon a predetermined flow of current in the circuit controlled by the bridging member and a conductor connected to the other of said contacts and disposed in cooperating relation with said movable currentconducting member to set up an electro-dynamic force for increasing the speed of operation of the bridging contact member upon said predetermined flow of current in the circuit controlled by the bridging member.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1720566X | 1926-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1720566A true US1720566A (en) | 1929-07-09 |
Family
ID=9680472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US225114A Expired - Lifetime US1720566A (en) | 1926-10-23 | 1927-10-10 | Circuit-controlling device |
Country Status (2)
Country | Link |
---|---|
US (1) | US1720566A (it) |
FR (1) | FR636688A (it) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072765A (en) * | 1960-07-06 | 1963-01-08 | Westinghouse Electric Corp | Circuit breaker |
US4470027A (en) * | 1982-07-16 | 1984-09-04 | Eaton Corporation | Molded case circuit breaker with improved high fault current interruption capability |
US4644309A (en) * | 1985-12-30 | 1987-02-17 | General Electric Company | High speed contact driver for circuit interruption device |
US4646041A (en) * | 1985-12-30 | 1987-02-24 | General Electric Company | High speed contact driver for circuit interruption device |
US4698607A (en) * | 1986-10-16 | 1987-10-06 | General Electric Company | High speed contact driver for circuit interruption device |
EP0410258A2 (de) * | 1989-07-26 | 1991-01-30 | Siemens Aktiengesellschaft | Elektromechanischer Schnellschalter |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2322444A1 (fr) * | 1975-08-26 | 1977-03-25 | Merlin Gerin | Dispositif de coupure de courant electrique |
CH647353A5 (de) * | 1979-05-18 | 1985-01-15 | Bbc Brown Boveri & Cie | Elektrischer schalter, insbesondere fuer gleichstrom. |
FR2503929A1 (fr) * | 1981-04-13 | 1982-10-15 | Kruglyansky Igor | Procede d'interruption automatique de la charge et interrupteur automatique de la charge pour la mise en oeuvre de ce procede |
-
0
- FR FR636688D patent/FR636688A/fr not_active Expired
-
1927
- 1927-10-10 US US225114A patent/US1720566A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072765A (en) * | 1960-07-06 | 1963-01-08 | Westinghouse Electric Corp | Circuit breaker |
US4470027A (en) * | 1982-07-16 | 1984-09-04 | Eaton Corporation | Molded case circuit breaker with improved high fault current interruption capability |
US4644309A (en) * | 1985-12-30 | 1987-02-17 | General Electric Company | High speed contact driver for circuit interruption device |
US4646041A (en) * | 1985-12-30 | 1987-02-24 | General Electric Company | High speed contact driver for circuit interruption device |
US4698607A (en) * | 1986-10-16 | 1987-10-06 | General Electric Company | High speed contact driver for circuit interruption device |
EP0410258A2 (de) * | 1989-07-26 | 1991-01-30 | Siemens Aktiengesellschaft | Elektromechanischer Schnellschalter |
EP0410258A3 (en) * | 1989-07-26 | 1992-01-02 | Siemens Aktiengesellschaft | Electromechanic high-speed breaker |
Also Published As
Publication number | Publication date |
---|---|
FR636688A (it) | 1928-04-14 |
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