US3046365A - High voltage double break interrupter switch - Google Patents
High voltage double break interrupter switch Download PDFInfo
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- US3046365A US3046365A US743070A US74307058A US3046365A US 3046365 A US3046365 A US 3046365A US 743070 A US743070 A US 743070A US 74307058 A US74307058 A US 74307058A US 3046365 A US3046365 A US 3046365A
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- blade
- quick
- break
- switch
- rotation
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- Expired - Lifetime
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- 239000012212 insulator Substances 0.000 description 30
- 230000000712 assembly Effects 0.000 description 26
- 238000000429 assembly Methods 0.000 description 26
- 230000000452 restraining effect Effects 0.000 description 19
- 239000007789 gas Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/123—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
Definitions
- the instant invention relates to interrupter switches in general and more particularly to an interrupter switch wherein two serially connected arcs are drawn simultaneously.
- the construction of my novel double-break interrupter switch is such that the two series arcs must inherently be drawn simultaneously.
- my invention comprises a main blade and a quick-break blade both mounted for rotation about a common pivot which is positioned midway between two stationary contact assemblies.
- a torsion spring interconnects the blades and urges the quick-break blade about the pivot toward a first stop carried by the main blade.
- the stationary contact assemblies each include restraining contacts, engageable with separate ends of the quick-break blade, and an associated arc chute of gas evolving material.
- a primary object of my invention is to provide a novel interrupter switch of the arc chute type, in which series arcs are drawn in such a manner that the arcs are inherently simultaneous.
- Another object is to provide an interrupter switch in which two series arcs are drawn in separate interrupters, with a common accelerating spring to separate the contacts in both interrupters.
- Still another object is to provide an interrupter switch in which two series arcs are drawn in separate interrupters,
- a further object is toprovide a disconnectingswitch of the double-break type, with an arc chute type interrupter mounted at either stationary contact, arranged to draw simultaneous series arcs in, the two are chutes.
- FIGURE 1 is a side elevation of my novel interrupter switch.
- FIGURES 24 are plan views of the interrupter switch ofFlGURE 1. In FIGURE 2 the interrupter is fully closed, in FIGURE 3 is is shown just prior to the movement of the quick-break blade, and in FIGURE 4 the interrupter is fully open.
- FIGURE 5 is across-section taken through line 5-5 of FIGURE 4 looking in the direction of the arrows to illustrate the restraining contacts.
- interrupter switch 16 comprises a pair of stationary contact assemblies 11,12 mounted on insulator standoffs 13, 14, respectively, and a movable blade assembly mounted on insulator 16.
- Insulators 13, 14 are rigidly secured to channel base 17 while insulator 16 is positioned midway between insulators 13, 14 and is rotatably mounted to base 17 in bearing 18. 7
- Each of the stationary contact assemblies 11,12 are comprised of 'a main contact 20 and restraining contacts 21 mounted to bracket 22.
- Bolts 23 secure contact 20 and bracket 22 to their associated fixed insulators 13 and 14.
- Main contacts 2% extend beyond their respective insulators 13, 14- to form switch terminals 23, 24, respectively.
- chutes 25 are secured to brackets 22 in operative position to extinguish arcs drawn at restraining contacts 21.
- the restraining contacts 21 are each mounted at the ends of individual flexible contact clips 99 which are biased toward one another by means of coil springs 98. Clips 99 are disposed between a pair of fan rivets 93.
- Main contacts 20 are positioned for engagement'by a'main blade :which is comprised of two elongated members 27, ZSrigidly secured by means of studs 26 to the upper end of insulator16. Washers are secured to both ends of members 27 and 28 to supply contact' pressure against the main contacts 20. Ring 29 acts as a spacer to separate members 27, 28 so that main contacts 20 may be sandwiched therebetween.
- Quick-break blade 31 is an elongated member whic is secured to shaft 32 which is pivotally mounted to insulator 16. Shaft 32 is in alignment with shaft 33 about which insulator 16 is pivotable. Torsion spring 34 is wound about shaft 32 and has one end secured to insulator 16 and the other end secured to quick-break blade 31 thereby biasing quick-break blade 31 clockwise, with respect to FIGURE 2, toward engagement with stop 35 mounted on main blade member 27.
- Restraining contacts 21 engage quick-break blade.31 with a force sufficient to maintain interrupter 10 closed regardlessof the loading upon accelerating spring'34. It is only when there is a rigid driving connection between rotatable insulator 16 and quick-break blade 31 that uick-break blade "31 may be separated from restraining contacts 21.
- the rigid driving connection issupplied by a) stop 36 secured to the lower member 23 of the main blade.
- Switch is operated from the closed position (FIG- URE 2) to the open position (FIGURE 4) rotating insulator 16 clockwise with respect to FIGURE 2 by applying an opening force thereto through crank 37 by means of a suitable actuating mechanism of conventional design.
- the initial rotation of insulator 16 carries main blade 27, 28 clockwise to an intermediate position (FIG- URE 3) thus separating main blade 27, 28 from stationary main contacts 29.
- arcs are not drawn therebetween since the circuit is still completed through quickbreak blade 31.
- insulator 16 loads accelerating spring 34 but this loading is insufiicient to separate quick-break blade 31 from arcing restraining contacts 21.
- stop 36 Upon further rotation of main blade 27, 23 from the intermediate position (FIGURE 3) toward the open position (FIGURE 4), stop 36 provides a driving mechanical connection between insulator 16 and quick-break blade 31 which is greater than the restraining forces exerted by arcing contacts 21 so that the ends of quick-break blade 31 become separated from restraining contacts 21.
- the loaded accelerating spring 34 takes over to rapidly rotate quick-break blade 31 clockwise into engagement with stop 35.
- Switch 10 Closing of switch 10 is accomplished by rotating insulator 16 from the position of FIGURE 4 to the position of FIGURE 5.
- Stop 35 provides a rigid driving connection between insulator 16 and quick-break blade 31 so that blades 31 and 27, 28 move in unison in a counterclockwise direction until the ends thereof engage the stationary contacts 21 and Ztl, respectively.
- An interrupter switch comprising a first and a second stationary contact assembly, a movable blade assembly operatively positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quick-break blade, and a torsion accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis; both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade as sembly in a first direction; said contact assemblies comprising first means for restraining rotation
- An interrupter switch comprising a first and a second stationary contact assembly, a movable blade assembly operatively positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quick-break blade, and an accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis; both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of quick-break blade during initial rotation
- An interrupter switch comprising a first and a sec ond stationary contact assembly, a movable blade assembly operatively' positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway, between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quickbreak blade, and an accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of said quick-breakbla
- said switch being operable between an open and a closed position by rotation of said blade assembly about said axis both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of said quick-break blade during initial rotation of said main blade through a predetermined angular distance said first direction;
- said second means for overcoming said first means after said initial rotation of predetermined angular distance; said second means comprising a rigid arm secured to and mounted transverse to said main blade and having a flanged end adapted to abut said quick-break blade upon rotation of said main blade through said predetermined angular distance for rotation of said quick break blade; said accelerating spring thereafter rapidly rotating said quick-break blade to said first position; said accelerating spring being loaded during said initial rotation of said main blade; at first insulator having said first contact assembly secured thereto and asecond insulator having said second contact assembly secured thereto; a third insulator having said blade assembly mounted thereon; said third insulator being positioned midway between said first and said second insulators and being rotatable about said axis; said main blade being rigidly secured to said third insulator for rotation in unison therewith; an arc chute fixedly secured to each of said first and said second insulators and operatively positioned to receive j and extinguish electric current arcs formed between the ends of said
Description
July 24, 1962 H. w. GRAYBILL 3,046,365
HIGH VOLTAGE DOUBLE BREAK INTERRUPTER SWITCH Filed June 19, 1958 3 Sheets-Sheet 1 July 24, 1962 H. w. GRAYBILL HIGH VOLTAGE DOUBLE BREAK INTERRUPTER SWITCH 3 Sheets-Sheet 2 Filed June 19, 1958 I I H H H H HWI July 24, 1962 H. w. GRAYBILL HIGH VOLTAGE DOUBLE BREAK INTERRUPTER SWITCH Filed June 19, 1958 5 Sheets-Sheet 3 INVENTOR. H0 mzeo mafinra/za b lt Anne/145%! drawn and extinguished simultaneously.
United rates 3,946,355 Patented July 24, 1962 time , The instant invention relates to interrupter switches in general and more particularly to an interrupter switch wherein two serially connected arcs are drawn simultaneously.
Single throw interrupter switches, using a quick-break blade in anarc, chute of gas-evolving material as the interrupting means, have been well-known in the industry for nearly two decades. However, many tests have shown that a single break interrupter of the gas-evolving type will interrupt only a few amperes at potentials above 15 kv. Other types of interrupters are available for service in the 15-33 kv. range, but they are either more complicated or more expensive to manufacture than the arc chute interrupter.
I propose to provide a switch with an arc chute interrupter of the gas-evolving type, suitable for interrupting load current in the order of 400 amperes at voltages in the order of 33 kv. Tests have shown that higher voltages can be interrupted successfully if two series arcs are However, if the two arcs are not drawn simultaneously, the first interrupter will attempt to interrupt the circuit unsuccessfully, and the advantage of the second interrupter is lost. The construction of my novel double-break interrupter switch is such that the two series arcs must inherently be drawn simultaneously.
I Briefly my invention comprises a main blade and a quick-break blade both mounted for rotation about a common pivot which is positioned midway between two stationary contact assemblies. A torsion spring interconnects the blades and urges the quick-break blade about the pivot toward a first stop carried by the main blade. The stationary contact assemblies each include restraining contacts, engageable with separate ends of the quick-break blade, and an associated arc chute of gas evolving material.
p In order to open my switch the main blade is rotated. However, the restraining contacts exert a force upon the quick-break blade which tends to maintain it in the closed position. Thus the initial rotation of the main blade will cause the' torsionspring to be loaded. When the main bladereachesa predetermined angular position a second stop mounted thereon engages the quick break blade with a rigid mechanical connection and thereafter forces it to rotate in unison with the main blade.
. After a relatively short movement of the quick-break blade it is free of the restraining contacts and, once free thereof, the loaded torsion spring takes over to rapidly rotate the quick-break blade toward the first stop. Thus serially connected arcs are drawn simultaneously in each arc chute which decompose a portion of the arch chute walls thereby absorbing energy from the arcs to cool, deionize and otherwise bring about the rapid extinguishing of the arcs.
Accordingly, a primary object of my invention is to provide a novel interrupter switch of the arc chute type, in which series arcs are drawn in such a manner that the arcs are inherently simultaneous.
Another object is to provide an interrupter switch in which two series arcs are drawn in separate interrupters, with a common accelerating spring to separate the contacts in both interrupters.
Still another object is to provide an interrupter switch in which two series arcs are drawn in separate interrupters,
with a common quiclobreak blade being the moving member in both interrupters.
A further object is toprovide a disconnectingswitch of the double-break type, with an arc chute type interrupter mounted at either stationary contact, arranged to draw simultaneous series arcs in, the two are chutes.
These as well as other objects of the instant invention shall become readilyapparent after reading the following description of the accompanying drawings in which:
FIGURE 1 is a side elevation of my novel interrupter switch.
FIGURES 24 are plan views of the interrupter switch ofFlGURE 1. In FIGURE 2 the interrupter is fully closed, in FIGURE 3 is is shown just prior to the movement of the quick-break blade, and in FIGURE 4 the interrupter is fully open.
, FIGURE 5 is across-section taken through line 5-5 of FIGURE 4 looking in the direction of the arrows to illustrate the restraining contacts. I
Referring tothe figures, interrupter switch 16 comprises a pair of stationary contact assemblies 11,12 mounted on insulator standoffs 13, 14, respectively, and a movable blade assembly mounted on insulator 16.
'- Insulators 13, 14 are rigidly secured to channel base 17 while insulator 16 is positioned midway between insulators 13, 14 and is rotatably mounted to base 17 in bearing 18. 7
Each of the stationary contact assemblies 11,12 are comprised of 'a main contact 20 and restraining contacts 21 mounted to bracket 22. Bolts 23 secure contact 20 and bracket 22 to their associated fixed insulators 13 and 14. Main contacts 2% extend beyond their respective insulators 13, 14- to form switch terminals 23, 24, respectively. Arc
' chutes 25 are secured to brackets 22 in operative position to extinguish arcs drawn at restraining contacts 21.
The restraining contacts 21 (FIGURE 5) are each mounted at the ends of individual flexible contact clips 99 which are biased toward one another by means of coil springs 98. Clips 99 are disposed between a pair of fan rivets 93.
Quick-break blade 31: is an elongated member whic is secured to shaft 32 which is pivotally mounted to insulator 16. Shaft 32 is in alignment with shaft 33 about which insulator 16 is pivotable. Torsion spring 34 is wound about shaft 32 and has one end secured to insulator 16 and the other end secured to quick-break blade 31 thereby biasing quick-break blade 31 clockwise, with respect to FIGURE 2, toward engagement with stop 35 mounted on main blade member 27.
, Restraining contacts 21 engage quick-break blade.31 with a force sufficient to maintain interrupter 10 closed regardlessof the loading upon accelerating spring'34. It is only when there is a rigid driving connection between rotatable insulator 16 and quick-break blade 31 that uick-break blade "31 may be separated from restraining contacts 21. The rigid driving connection issupplied by a) stop 36 secured to the lower member 23 of the main blade.
Switch is operated from the closed position (FIG- URE 2) to the open position (FIGURE 4) rotating insulator 16 clockwise with respect to FIGURE 2 by applying an opening force thereto through crank 37 by means of a suitable actuating mechanism of conventional design. The initial rotation of insulator 16 carries main blade 27, 28 clockwise to an intermediate position (FIG- URE 3) thus separating main blade 27, 28 from stationary main contacts 29. However, arcs are not drawn therebetween since the circuit is still completed through quickbreak blade 31.
In moving to the intermediate position insulator 16 loads accelerating spring 34 but this loading is insufiicient to separate quick-break blade 31 from arcing restraining contacts 21. Upon further rotation of main blade 27, 23 from the intermediate position (FIGURE 3) toward the open position (FIGURE 4), stop 36 provides a driving mechanical connection between insulator 16 and quick-break blade 31 which is greater than the restraining forces exerted by arcing contacts 21 so that the ends of quick-break blade 31 become separated from restraining contacts 21. As soon as blade 31 is separated from contacts 21, the loaded accelerating spring 34 takes over to rapidly rotate quick-break blade 31 clockwise into engagement with stop 35.
As quick-break blade 31 rotates under the influence of spring 34, arcs are simultaneously formed between the ends of blade 31 and the associated restraining contacts 21. The heat of the arcs decompose portions of the walls of arc chutes causing dielectric gases to be evolved therefrom. This decomposition of the walls absorbs energy from the arcs, thereby efiiciently cooling, deiouizing and extinguishing the arcs.
Closing of switch 10 is accomplished by rotating insulator 16 from the position of FIGURE 4 to the position of FIGURE 5. Stop 35 provides a rigid driving connection between insulator 16 and quick-break blade 31 so that blades 31 and 27, 28 move in unison in a counterclockwise direction until the ends thereof engage the stationary contacts 21 and Ztl, respectively.
Thus I have provided a novel construction for a high current, high voltage interrupter switch of the arc chute type in which serially connected arcs are simultaneously drawn resulting in improved circuit interruption.
Accordingly, I prefer to be bound not by the specific disclosure herewith but only by the appending claims.
Iclaim:
1. An interrupter switch comprising a first and a second stationary contact assembly, a movable blade assembly operatively positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quick-break blade, and a torsion accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis; both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade as sembly in a first direction; said contact assemblies comprising first means for restraining rotation of quickbreak blade during initial rotation of said main blade through a predetermined angular distance in said first direction; said means being overcome after said initial rotation of predetermined angular distance and said accelerating spring thereafter rapidly rotating said quick-break blade to said first position; second means carried by said main blade engageable with said quick-break blade after said initial rotation; said second means comprising a rigid arm secured to and mounted transverse to said main blade and having a flanged end adapted to abut said quickbreak blade upon rotation of said main blade through said predetermined angular distance for rotation of said quick-break blade; said second means providing a driving connection between said blades for overcoming said restraining means and rotating said quick-break blade in said first direction; each of said stationary contact assemblies including a main contact, engageable with said main blade, an arcing contact, engageable with said quick-break blade, and an arc chute operatively positioned to receive an arcdrawn between said arcing contact and said quick-break blade upon operation of said interrupter to its open position; each of said are chutes comprising a pair of gas evolving plates positioned substantially to the plane of movement of said quick-break blade.
2. An interrupter switch comprising a first and a second stationary contact assembly, a movable blade assembly operatively positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quick-break blade, and an accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis; both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of quick-break blade during initial rotation of said main blade through a predetermined angular distance in said first direction; said means being overcome after said initial rotation of predetermined angular distance and said accelerating spring thereafter rapidly rotating said quick-break blade to said first position; second means carried by said main blade engageable with said quick-break blade after said initial rotation; said second means comprising a rigid arm secured to and mounted transverse to said main blade and having a flanged end adapted to abut said quick-break blade upon rotation of said main blade through said predetermined angular distance for rotation of said quickbreak blade; said second means providing a driving connection between said blades for overcoming said restraining means and rotating said quick-break blade in said first direction; each of said stationary contact assemblies including a main contact, engageable with said main blade, an arcing contact, engageable with said quickbreak blade, and an arc chute operatively positioned to receive an are drawn between said arcing contact and said quick-break blade upon operation of said interrupter to its open position; a first insulator having said first contact assembly secured thereto and a second insulator having said second contact assembly secured thereto; a third insulator having said blade assembly mounted thereon; said third insulator being positioned midway between said first and said second insulators and being rotatable about said axis; said main blade being rigidly secured to said third insulator for rotation in unison therewith; each of said are chutes comprising a pair of gas evolving plates positioned substantially to the plane of movement of said quick-break blade.
3. An interrupter switch comprising a first and a sec ond stationary contact assembly, a movable blade assembly operatively' positioned with the opposite ends thereof engageable with said first and said second contact assemblies respectively, said blade assembly being rotatable about an axis positioned midway, between said contact assemblies thereby assuring that arcs drawn at said contact assemblies will be simultaneously created; said movable blade assembly comprising a main blade, a quickbreak blade, and an accelerating spring operatively connected between said blades and mounted concentrically with respect to said axis of said blades and operatively positioned to urge said blades toward a predetermined angular first position with respect to one another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of said quick-breakblade during initial rotation of said main blade through a predetermined angular distance in said first direction; second means for overcoming said first means after said initial rotation of predetermined angular distance; said second means comprising a rigid arm secured to and mounted transverse to said main blade and having a flanged end adapted to abut said quick-break blade upon rotation of said main blade through said predetermined angular distance for rotation of said quick-break blade; said accelerating spring thereafter rapidly rotating said quickbreak blade to said first position; said accelerating spring being loaded during said initial rotation of said main blade; a first and a second arc chute fixedly mounted and operatively positioned with respect to said first and said second stationary contact assemblies so as to receive and aid in the extinction of electric current arcs drawn between the ends of said quick-break blade and said stationary contact assemblies upon opening of said switch.
. another; said switch being operable between an open and a closed position by rotation of said blade assembly about said axis both of said blades being in engagement with said contact assemblies when said switch is in said closed position; said switch being moved from said closed to said open position by a rotation of said blade assembly in a first direction; said contact assemblies comprising first means for restraining rotation of said quick-break blade during initial rotation of said main blade through a predetermined angular distance said first direction;
second means for overcoming said first means after said initial rotation of predetermined angular distance; said second means comprising a rigid arm secured to and mounted transverse to said main blade and having a flanged end adapted to abut said quick-break blade upon rotation of said main blade through said predetermined angular distance for rotation of said quick break blade; said accelerating spring thereafter rapidly rotating said quick-break blade to said first position; said accelerating spring being loaded during said initial rotation of said main blade; at first insulator having said first contact assembly secured thereto and asecond insulator having said second contact assembly secured thereto; a third insulator having said blade assembly mounted thereon; said third insulator being positioned midway between said first and said second insulators and being rotatable about said axis; said main blade being rigidly secured to said third insulator for rotation in unison therewith; an arc chute fixedly secured to each of said first and said second insulators and operatively positioned to receive j and extinguish electric current arcs formed between the ends of said quick break blade and said contact assemblies upon opening of said switch.
References Cited in the file of this patent UNITED STATES PATENTS I 688,583 Bassert Dec. 10, 1901 1,656,399 Steinmayer Jan. 17, 1928 1,843,052 Upton Jan. 26, 1932 2,308,026 Rawlins Jan. 12, 1943 2,399,485 Harlow et al. Apr. 30, 1946 2, ,3 2 Pl G ----=4--- 9. 5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US743070A US3046365A (en) | 1958-06-19 | 1958-06-19 | High voltage double break interrupter switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US743070A US3046365A (en) | 1958-06-19 | 1958-06-19 | High voltage double break interrupter switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3046365A true US3046365A (en) | 1962-07-24 |
Family
ID=24987408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US743070A Expired - Lifetime US3046365A (en) | 1958-06-19 | 1958-06-19 | High voltage double break interrupter switch |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3046365A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218419A (en) * | 1964-01-30 | 1965-11-16 | Westinghouse Electric Corp | Arc chute and shielding hood mounted on blade of high-voltage switch |
| FR2216662A1 (en) * | 1973-02-02 | 1974-08-30 | Alsthom Cgee | |
| US10347436B2 (en) | 2015-10-08 | 2019-07-09 | Abb Schweiz Ag | Switching device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US688583A (en) * | 1901-05-20 | 1901-12-10 | William F Bossert | Electric knife-switch. |
| US1656399A (en) * | 1924-07-31 | 1928-01-17 | Line Material Co | Electrical switch |
| US1843052A (en) * | 1930-03-27 | 1932-01-26 | Francis H Upton | Disconnection switch for high tension electric lines |
| US2308026A (en) * | 1940-02-20 | 1943-01-12 | Westinghouse Electric & Mfg Co | Load break disconnect |
| US2399485A (en) * | 1942-12-26 | 1946-04-30 | Gen Electric | Electric circuit breaker |
| US2710322A (en) * | 1953-08-17 | 1955-06-07 | Eastern Power Devices Ltd | Circuit interrupter |
-
1958
- 1958-06-19 US US743070A patent/US3046365A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US688583A (en) * | 1901-05-20 | 1901-12-10 | William F Bossert | Electric knife-switch. |
| US1656399A (en) * | 1924-07-31 | 1928-01-17 | Line Material Co | Electrical switch |
| US1843052A (en) * | 1930-03-27 | 1932-01-26 | Francis H Upton | Disconnection switch for high tension electric lines |
| US2308026A (en) * | 1940-02-20 | 1943-01-12 | Westinghouse Electric & Mfg Co | Load break disconnect |
| US2399485A (en) * | 1942-12-26 | 1946-04-30 | Gen Electric | Electric circuit breaker |
| US2710322A (en) * | 1953-08-17 | 1955-06-07 | Eastern Power Devices Ltd | Circuit interrupter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218419A (en) * | 1964-01-30 | 1965-11-16 | Westinghouse Electric Corp | Arc chute and shielding hood mounted on blade of high-voltage switch |
| FR2216662A1 (en) * | 1973-02-02 | 1974-08-30 | Alsthom Cgee | |
| US10347436B2 (en) | 2015-10-08 | 2019-07-09 | Abb Schweiz Ag | Switching device |
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