US1958159A - Disconnecting switch with compensated electrodynamic forces - Google Patents
Disconnecting switch with compensated electrodynamic forces Download PDFInfo
- Publication number
- US1958159A US1958159A US525846A US52584631A US1958159A US 1958159 A US1958159 A US 1958159A US 525846 A US525846 A US 525846A US 52584631 A US52584631 A US 52584631A US 1958159 A US1958159 A US 1958159A
- Authority
- US
- United States
- Prior art keywords
- blade
- disconnecting switch
- compensated
- loop
- electrodynamic forces
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
Definitions
- the disconnecting switches of electric lines are By suitably selecting the dimensions of the generally formed with a knife blade forming a loop a, b, c, d, the loop a b c' it may be dispensed loop with the current leads.
- a short circuit with and neverthelessa resultant F directed downoccurs a field is generated within the loop and wards obtained. This is shown in Fig. 3, wherein 5 the forces thus generated open the disconnecting the blade is pivoted at A and opens the line 60 switch. at X.
- a disconnecting switch of this character can- In the construction illustrated in Fig. 2 the curnot be utilized on lines where short circuit current is lead in by way of a terminal P fromwhich rents are heavy in view of the fact that the knife extend two shaped conductors G at the free end blade would open at each short circuit. of which is fixed a contact having jaws M.
- the 55 The present invention avoids this disadvanparts G thus form the loop designated by a b c d tage. It has for its object a disconnecting switch in Fig. 1.
- One of the arms G may be dispensed characterized in this that the current leads form with. at least at one of the ends of the knife blade 3.
- Figs. 1 and 2 show respectively a schematic arcomprising a movable knife blade adapted to conrangement and a part view of a disconnecting nect the two extremities of a part of an electric 75 switch in accordance with the invention and Figline, knife blade supports carrying the line curure 3 is a diagrammatic representation of a modirent and forming with the blade a first loop, the fied form of the invention wherein one side loop is blade moving away from the center of this loop dispensed with.
- the knife blade is denoted by to open the line, and aloop formed by one extremi- C and the two loops formed by the conductors by ty of the blade support with the corresponding 80 a, b, c, d, and by a, b, c, d.
- the disconnecting end of the blade, and above said blade, the secswitch opens by moving the knife blade upwards. ond loop being opposed to the first.
- the apparatus thus forms three loops, a large 2.
- a displaceable loop D d, d, E as also two small loops a b c d and knife blade forming several loops with the exa b c 11.
- These three loops generate electrotremities of an .electric line which said blade condynamic forces F1, F2, F3, the first of which is dinects together, and a forked support at the openrected upwards while the two others tend to oping end of the blade and constituted by the expose the opening of the knife blade.
Landscapes
- Crushing And Pulverization Processes (AREA)
- Knives (AREA)
Description
- y 3, 1 c. BRESSON DISCONNEQTING SWITCH WITH COMPENSATED ELECTRODYNAIIC FORCES Filed March 27, 1931 imfe/zl'or C/zarleaZresa OIL Patented May 8 1934 a I UNITED STATES PATENT OFFICE DISCONNECTING SWITCH WITH COIVIPEN- SATED ELECTRODYNAMIC FORCES Charles Bresson, Villeurbanne, France, assignor to Ateliers de Constructions Electriques de Belle, Paris, France Application March 27, 1931, Serial No. 525,846 In Germany March 28, 1930 2 Claims. (Cl. 200-87) The disconnecting switches of electric lines are By suitably selecting the dimensions of the generally formed with a knife blade forming a loop a, b, c, d, the loop a b c' it may be dispensed loop with the current leads. When a short circuit with and neverthelessa resultant F directed downoccurs a field is generated within the loop and wards obtained. This is shown in Fig. 3, wherein 5 the forces thus generated open the disconnecting the blade is pivoted at A and opens the line 60 switch. at X.
A disconnecting switch of this character can- In the construction illustrated in Fig. 2 the curnot be utilized on lines where short circuit current is lead in by way of a terminal P fromwhich rents are heavy in view of the fact that the knife extend two shaped conductors G at the free end blade would open at each short circuit. of which is fixed a contact having jaws M. The 55 The present invention avoids this disadvanparts G thus form the loop designated by a b c d tage. It has for its object a disconnecting switch in Fig. 1. One of the arms G may be dispensed characterized in this that the current leads form with. at least at one of the ends of the knife blade 3. Having now particularly described and ascerloop which gives to the electrodynamic forces acttained the nature of my said invention and in 79 ing on the knife blade a direction such that the what manner the same is to be performed, I deopening of the knife under the action of short clare that what I claim is: circuit currents may be avoided. 1. A disconnecting switch for electric lines,
Figs. 1 and 2 show respectively a schematic arcomprising a movable knife blade adapted to conrangement and a part view of a disconnecting nect the two extremities of a part of an electric 75 switch in accordance with the invention and Figline, knife blade supports carrying the line curure 3 is a diagrammatic representation of a modirent and forming with the blade a first loop, the fied form of the invention wherein one side loop is blade moving away from the center of this loop dispensed with. The knife blade is denoted by to open the line, and aloop formed by one extremi- C and the two loops formed by the conductors by ty of the blade support with the corresponding 80 a, b, c, d, and by a, b, c, d. The disconnecting end of the blade, and above said blade, the secswitch opens by moving the knife blade upwards. ond loop being opposed to the first.
The apparatus thus forms three loops, a large 2. In a disconnecting switch, a displaceable loop D d, d, E, as also two small loops a b c d and knife blade forming several loops with the exa b c 11. These three loops generate electrotremities of an .electric line which said blade condynamic forces F1, F2, F3, the first of which is dinects together, and a forked support at the openrected upwards while the two others tend to oping end of the blade and constituted by the expose the opening of the knife blade. The dimentremities of the line to be opened, said forked sions a d, d d and d a. are so selected that the support constituting a loop above the blade and 35 resultant of the three forces F is directed downin planes parallel to the plane of said blade and wards and consequently opposes the opening of at each side thereof. the knife blade. I CHARLES BRESSON.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE587047T | 1930-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1958159A true US1958159A (en) | 1934-05-08 |
Family
ID=7781964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US525846A Expired - Lifetime US1958159A (en) | 1930-03-28 | 1931-03-27 | Disconnecting switch with compensated electrodynamic forces |
Country Status (3)
Country | Link |
---|---|
US (1) | US1958159A (en) |
DE (1) | DE587047C (en) |
FR (1) | FR712818A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601482A (en) * | 1947-03-20 | 1952-06-24 | Ite Circuit Breaker Ltd | Circuit breaker-blow open, blow closed contacts |
US2695350A (en) * | 1951-12-26 | 1954-11-23 | Mcgraw Electric Co | Contact means |
US2821594A (en) * | 1954-02-04 | 1958-01-28 | Merlin Gerin | Electrodynamic compensation device for pressure contacts |
US2911492A (en) * | 1957-02-25 | 1959-11-03 | Gen Electric | Operating mechanism for a fluid blast circuit breaker |
US3024328A (en) * | 1960-01-27 | 1962-03-06 | Southern States Inc | Electric grounding switch |
US3249729A (en) * | 1963-10-18 | 1966-05-03 | Gen Electric | Electric circuit breaker wherein the operation of separable arcing contacts is dependent on the magnitude of current in the main contacts |
US3504142A (en) * | 1967-10-09 | 1970-03-31 | Westinghouse Electric Corp | High voltage electric switch |
US4849590A (en) * | 1988-04-01 | 1989-07-18 | Kohler Company | Electric switch with counteracting electro-electro-dynamic forces |
US4991050A (en) * | 1989-09-18 | 1991-02-05 | Allen-Bradley Company, Inc. | Method and device for protecting starters from fault currents |
US5072203A (en) * | 1989-09-18 | 1991-12-10 | Allen-Bradley Company, Inc. | Method and device for protecting starters from fault currents |
US5313031A (en) * | 1990-12-28 | 1994-05-17 | Mitsubishi Denki Kabushiki Kaisha | Electric switch gear with improved stationary contact configuration |
FR2849265A1 (en) * | 2002-12-20 | 2004-06-25 | Alstom | Good dielectric gas quality electric switch operation having first cylindrical electrode/second annular electrode having opening and mobile contact superimposing second electrode open position |
US20090295371A1 (en) * | 2008-05-30 | 2009-12-03 | Itron, Inc. | Actuator/wedge improvements to embedded meter switch |
US20110074600A1 (en) * | 2009-09-30 | 2011-03-31 | Itron, Inc. | Utility remote disconnect from a meter reading system |
US20110074602A1 (en) * | 2009-09-30 | 2011-03-31 | Itron, Inc. | Gas shut-off valve with feedback |
US8890711B2 (en) | 2009-09-30 | 2014-11-18 | Itron, Inc. | Safety utility reconnect |
US9005423B2 (en) | 2012-12-04 | 2015-04-14 | Itron, Inc. | Pipeline communications |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1020080B (en) * | 1955-12-24 | 1957-11-28 | Calor Emag Elektrizitaets Ag | Electrical switch with main and tear-off contacts |
DE1201449B (en) * | 1962-08-31 | 1965-09-23 | Krone Kg | Load switch |
DE2502162C3 (en) * | 1975-01-21 | 1981-10-22 | Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen | Top switches, in particular earthing switches |
-
1930
- 1930-03-28 DE DE1930587047D patent/DE587047C/en not_active Expired
-
1931
- 1931-02-05 FR FR712818D patent/FR712818A/en not_active Expired
- 1931-03-27 US US525846A patent/US1958159A/en not_active Expired - Lifetime
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601482A (en) * | 1947-03-20 | 1952-06-24 | Ite Circuit Breaker Ltd | Circuit breaker-blow open, blow closed contacts |
US2695350A (en) * | 1951-12-26 | 1954-11-23 | Mcgraw Electric Co | Contact means |
US2821594A (en) * | 1954-02-04 | 1958-01-28 | Merlin Gerin | Electrodynamic compensation device for pressure contacts |
US2911492A (en) * | 1957-02-25 | 1959-11-03 | Gen Electric | Operating mechanism for a fluid blast circuit breaker |
US3024328A (en) * | 1960-01-27 | 1962-03-06 | Southern States Inc | Electric grounding switch |
US3249729A (en) * | 1963-10-18 | 1966-05-03 | Gen Electric | Electric circuit breaker wherein the operation of separable arcing contacts is dependent on the magnitude of current in the main contacts |
US3504142A (en) * | 1967-10-09 | 1970-03-31 | Westinghouse Electric Corp | High voltage electric switch |
US4849590A (en) * | 1988-04-01 | 1989-07-18 | Kohler Company | Electric switch with counteracting electro-electro-dynamic forces |
US4991050A (en) * | 1989-09-18 | 1991-02-05 | Allen-Bradley Company, Inc. | Method and device for protecting starters from fault currents |
US5072203A (en) * | 1989-09-18 | 1991-12-10 | Allen-Bradley Company, Inc. | Method and device for protecting starters from fault currents |
US5313031A (en) * | 1990-12-28 | 1994-05-17 | Mitsubishi Denki Kabushiki Kaisha | Electric switch gear with improved stationary contact configuration |
FR2849265A1 (en) * | 2002-12-20 | 2004-06-25 | Alstom | Good dielectric gas quality electric switch operation having first cylindrical electrode/second annular electrode having opening and mobile contact superimposing second electrode open position |
US20090295371A1 (en) * | 2008-05-30 | 2009-12-03 | Itron, Inc. | Actuator/wedge improvements to embedded meter switch |
US20090294260A1 (en) * | 2008-05-30 | 2009-12-03 | Itron,Inc. | Meter with integrated high current switch |
US8040664B2 (en) | 2008-05-30 | 2011-10-18 | Itron, Inc. | Meter with integrated high current switch |
US8395464B2 (en) | 2008-05-30 | 2013-03-12 | Itron, Inc. | Actuator/wedge improvements to embedded meter switch |
US20110074600A1 (en) * | 2009-09-30 | 2011-03-31 | Itron, Inc. | Utility remote disconnect from a meter reading system |
US20110074602A1 (en) * | 2009-09-30 | 2011-03-31 | Itron, Inc. | Gas shut-off valve with feedback |
US8493232B2 (en) | 2009-09-30 | 2013-07-23 | Itron, Inc. | Gas shut-off valve with feedback |
US8890711B2 (en) | 2009-09-30 | 2014-11-18 | Itron, Inc. | Safety utility reconnect |
US9005423B2 (en) | 2012-12-04 | 2015-04-14 | Itron, Inc. | Pipeline communications |
Also Published As
Publication number | Publication date |
---|---|
FR712818A (en) | 1931-10-13 |
DE587047C (en) | 1933-10-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1958159A (en) | Disconnecting switch with compensated electrodynamic forces | |
US3953811A (en) | Current-limiting electric switch exempt from bumps in the opening stage | |
US1720566A (en) | Circuit-controlling device | |
US2695350A (en) | Contact means | |
US1919065A (en) | Switch | |
US3333071A (en) | High voltage electric circuit breaker with means for precisely coordinating the operation of widely spaced components | |
US3177325A (en) | Mechanical and electrical pivot between removable arc chute and stationary contact structure | |
US2130368A (en) | Automatic circuit breaker | |
US2174237A (en) | Electric switch | |
US2011503A (en) | Electric switch | |
US1584612A (en) | Circuit breaker | |
US1854990A (en) | Electric switch | |
US3478185A (en) | Switch and contact arrangement | |
US2227507A (en) | Circuit interrupter | |
US1966316A (en) | Arc chute | |
US2970196A (en) | Circuit interrupters | |
US2141846A (en) | High tension switch | |
US2962568A (en) | Fusible device | |
US2069641A (en) | Electric circuit interrupter | |
US1843239A (en) | Fused circuit breaker and method | |
US760602A (en) | Oil-switch. | |
US2310096A (en) | Switch structure | |
US1740861A (en) | Snap switch | |
US691766A (en) | Electric switch. | |
US1856121A (en) | Air break switch |