US3032632A - Circuit interrupters - Google Patents

Circuit interrupters Download PDF

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Publication number
US3032632A
US3032632A US824286A US82428659A US3032632A US 3032632 A US3032632 A US 3032632A US 824286 A US824286 A US 824286A US 82428659 A US82428659 A US 82428659A US 3032632 A US3032632 A US 3032632A
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United States
Prior art keywords
contact
interrupting
pressure
rod
casing
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
Application number
US824286A
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English (en)
Inventor
Earl F Beach
George N Coker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US824286A priority Critical patent/US3032632A/en
Priority to DEW27887A priority patent/DE1212191B/de
Priority to CH666360A priority patent/CH385319A/de
Application granted granted Critical
Publication of US3032632A publication Critical patent/US3032632A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
    • 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
    • H01H33/124—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement the auxiliary contact being a whip contact

Definitions

  • a general object of the present invention is to provide van improve'd 'circuit interrupter, which will 'more effectively bring about arc extinction than has been obtained h'eretofore.
  • Another object of the nvention is to provide an improved, circuit-interrpting ⁇ unit involving4 light parts 4adaptable for high-speed motion, ah'd in which a valve ar'- rangement is associated with 'the arcing Chamber to pro'- vide a fiow of fluid quickly into the arcing chamber following Vcircuit interrupti'on, to be in readiness for any subsequent opening operation which 'might occur'.
  • Another object of the invention is to provide an improved circuit-interrupting unit of the type establishing two breaks in series,'on ⁇ e break being employ'e'd as a pressure-generating break, whereas the other break is utilized as an interrupting break to 'obtain a c'o'ol fiw of fiui'd toward the iuterruptihg break.
  • Yet a further object of the invention is to v'provide an improved interrupting unit, in which the pressure, initialtly established, is confine'd within a substahtially closed ar'cing charnber, which is subsequently opened by the withdrawing m'otion of the mov'able contact, and in which the confinedjgase's are then ejected from the arcing cham- Ibei' yto quickly bring about Aextinction of the a-c.
  • an orifice structure is associated with the arcing chamb'er to more eifectively direct the airc gases.
  • Another objectjof the present invention is to employ a hormally-open-valve mechanism associated with an arcing chamber, which will be closed during the high-pressure interupting period, but which will subsetjuently open following arc exti'nctioii, to permi-t a convection flow of fluid 'back into the arcing charnber, so that the interrupting unit will be in readih'ess for any subsequent opening operation.
  • Still a further 'object of the invention is to provide an 'improved circuit-interrupting unit, which is particularly 'adapte'd for use in a lod-break disconnectihg switch, so that the ejectioh of the niov'abl'e coh'tact rod ⁇ frbm the arcihg c'hainber will 'assis't 'the overc'ent'er spring associated 'ith theV overcenter-sp'ririg mechanisrn employed with the dead-break disco'nnectihg switch to provide very highspeed operation.
  • FIG. 1 is a side elevation'al view of a load-break dis- 'cohnecting switch incorporating the improved circuit in- "terruptig Vdevice of the present invention, the contact structure being shown in the closed-circuit position;
  • PIG. 2 is an enlarged, fragmentary Vertical sectional view taken through the interrupting unit of the load-break disconnecting switch of FiG. 1, the contact and mechani'sin parts being illus'trated in the closed-circuit position;
  • FIG. 3 is a 'fragmentary view, similar to that of PIG. 2, but showing the disposition of the mechanism parts at the point where the moving contact rod Will be tripped to the open position; x
  • FIG. 4 is a fragmentary view, similar to that of PIG.) 3, but illusftrat'ing the position of the several parts in the fully opflehcir'cuit position; I
  • FIG. 5 is a fragmentary view, similar to those of FIGS. 3 and 4 but indicating the point during the closing stroke, at which the niovihg contact rod is just ready to be snapp'ed to its closed-circuit position;
  • FIG. 6 is a Vertical sctiona'l view taken through the interruptng device of the present invention, the contact 'parts being illust'r'ated in the closed-circuit position;
  • FG. 7 'illust'r'ates a modified type of interrupting unit, which may be employed in place of the interrupting unit 'of FIG. 6, again the contact parts being illustrated iu the closed-circuit position;
  • BIG. 8 is a view similar to FIG. 6, but showing the dis- 'p'osition of the parts when the moving contact rod .has just 'cleared the orifice and arc exti'nctioh is occurring; and, v
  • FIG. 9 is a view similar to that of FIG. 7, but illustrating the disposition of the several contact parts at the instant of a'rc extin'ction.
  • the reference numeral 1 generally ;designates a load-break.dsconh'ecting switch.
  • a load-break.dsconh'ecting switch As well known by those 'skilled in the 'ar-t, in many instances it is desir- 'able t'o open a high-voltage disconnecting switch while normal load current is fiowing in the circuit in which it lis connected.
  • high voltage transformers are constantly connected to the highvoltage line and infrequently require servicin'g.
  • an 3 auxiliary interrupting device is associated with the break end of the switch to interrupt the current in an arcextinguishing device, so that the current will not be broken at the open switch contacts.
  • FIG. 1 there 'are provided three insulator stacks 2, 3 and 4. These insulator stacks are supported upwardly from a channel-shaped base 5.
  • the load-break disconnecting switch 1 may be mounted vertically or even inverted, as well known by those skilled in the art.
  • the insulator stack 2 - is rotatable, being mounted upon a bearing 9, and the rotation thereof eifected by a crank arm 8.
  • a circuit-interrupting device is associated with the stationary jaw contacts 12.
  • the -tip end, or tn'pping stud portion 14 of the main switch blade Strikes a laterally jutting 'actuating rod 15, which is supported from a Crank arm, or tripping lever, generally designated by the reference numeral 16.
  • the erank arm 16 is fixedly secured to the outer end of the drive or Operating shaft 1'7, which effects the actuation of 'an overcenter spring mechanism, which is disposed within a mechanism housing 21.
  • the mechanism housing 21 is disposed at the upper end of the circuit-interrupting device 13.
  • the stationary insulator stack 4 also supports a terminal pad 22 which constitutes a portion of a base casting 23.
  • a stationary contact rod support 24 extends upwardly from the base casting 23. At the upper end of the stationary contact rod support 24 is a stationary contact 25, as shown in FIG. 8.
  • a movable contact 26 Cooperable with ythe stationary contact 25, interiorly of the circuit-interrupting device 13, is a movable contact 26, which is carried by a movable contact rod 27.
  • the upper end of the movable contact rod 27 terminates in an upper rod-end 29, to which is fixedly secured a flexible connector 30, which, as shown in FIG. 2, has itsother end fixedly secured to the mechanism housing 21.
  • the upper interrupter terminal for the circuitand 3 is a support casting 36, which has a line-terminal connection plate 37 integrally formed therewith.
  • the electrical circuit therethrough includes terminal pad 22, base casting 23, stationary main switch jaws 12, contact 11 of main switch blade 10, through cam housing 7 and support casting 36 to the right-hand terminal pad 37.
  • circuit-interrupting device 13 During .the opening operation, following separation between the contact 11 of switch blade 10 from stationary jaw contacts 12, the circuit is compelled to fiow upwardly through the circuit-interrupting device 13.
  • This path includes terminal pad 22, base casting 23, base plate 89 ('FIG. 2), stationary contact rod 24, stationary contact 25, moving contact 26, movable contact rod 27, upper rod-end 29, flexible connector 30, through mechanism housing 21 to interrupter terminal 31, through the auxiliary conducting spring rod 33 to mechanism housing 7, and thence through support casting 36 to the right-hand terminal vconnection plate 37.
  • an explosion pot or a substantially closed pressure chamber interrupting element generally designated by the reference numeral '40, and more clearly shown in FIG. 8 of the drawings.
  • the load current is extinguished within the interrupting element 40, as hereinafter described, and continued clock- Wise rotation of the main switch blade 10 brings the latter to the fully open dotted position 42 of FIG. 1.
  • the fully open position of the Crank arm 16 is indicated by the dotted lines 43 of FIG. 1.
  • the main switch blade 10 rotates about 'a pivot axis 44, which is disposed adjacent the hinged end of the switch blade 10.
  • crank-arm assembly 49 is rigidly secured to the drive shaft 17.
  • the drive shaft 17 extends interiorly within the mechanism housing 21, and preferably has a Seal associated therewith to prevent the leakage of arc-extinguishing gas, which is present interiorly of the circuit-interrupting device 13, out axially along the shaft.
  • a sealing device may be such as described and claimed in U.S. Patent 2.853,584 issued September 3, 1958, to Chester W. Upton, Jr. and assigned to the assignee of the instant invention.
  • the crank-arm assembly 49 includes a first crank-plate portion 50 and a second crank-plate portion 51, which are fixedly secured together.
  • a pivot pin 52 pivotally interconnects the first crank plate portion 50 with a link 53.
  • the lower end of the link 53 is pivotally connected, by a pivot pin 54, to a U-shaped lever, generally designated by the reference numeral 55.
  • the legs 56 of the U-shaped lever 55 are slotted, as at 57, vand bear against bearing pins 58, which project inwardly from the inner side walls of the mechan'ism housing 21.
  • 'A Estop bracket plate 59 having an angle port'ion 61, -is fix'edly 'secur'ed by the shaft 17 and one of ⁇ the bearin'g pins 58.
  • the angle porti'on 61 of stop bracket plate 59 limits the opening and closing travel of the pivot vpin '52.
  • a ,second U- shap'ed lever generally designated by'the reference nuin'eral 62.
  • the legs 63 of the second U-shaped lever 62 also 'have slots 64 associated therewith, which bear upon 'the bearing piiis 58.
  • a pivot pin 65 extending through the legs '63 'of the U-shaped lever 62, pivotally 'connect the lever 62 with a channel-shaped lever 66, which is pivotally connected, as at '67, to a channel-shaped lever '68.
  • the chanel-shape'd lever 68 has its upper end pivotally connected, as at 69, to a stationary channelshaped bracket 70, which is sec'ured by bolts, 71 tozboss 'supports 72.
  • The, channel-shaped lever 66, 1n addition, has a pivot pin 7'3, which extends through the rod-end 29 'of movable contact ro'd 27.
  • An overcenter tension spring 75 is in tension, being entended over thepivot pins 54, '65, as shown inVEIG. 2.
  • a push link 77 is pivotally connected, as at 78, to the second cfank-plate portion 51.
  • the pushlink 77 has a slot 79 *disposed therein, through which extends a pin 80, which also extends through one of the legs 63 of the second U-shaped l'ever 62.
  • PIG. 4 indicatesthe same position of the mechanism parts "20 'as that findicat'ed by the dotted position-43 ⁇ of F'IG. 1'.
  • the casing 84 is of porcelain, but other materials m'ay', 'of
  • second mounting fiange ring 07 is cemerited, by cement 86, to theV upper end of the -porcelain 'c'asng 84.
  • the casing A84 is secured by mounting bolts '88 to the base plate 89.
  • VAdditional mounting bolts secure 'the upper end of the casig 84 to 'a'ri upper casting 'plate 9.1.
  • the 'casting plate 91 is, in turn, secured by moun'ting bolts 92 to the upper mechanism housing 21.
  • ring gaskets 93-95 are associated with the casing 84 and with the mechanism housing 21, in a'dditicn to the shaft-sealing device for the shaft 17, as previously mentioned.
  • a pressure gauge 96 illustrated in'FIG. 2, is provided. This pressure gauge 96 is visible from ground level by a station attendant. Also a feed valve 97 is provided, which may be connected by a hose connection to an external supply of arc-extinguishi'ng gas, 'such as SP6, not shown.
  • this pressure charnber 40 includes an insulating tube 99, which carries an elongated interrupting4 orifice, lgenerally designate'd by the reference numeral 100, at its upper end.
  • the interrupting orifice 100 has a restricted orifice opening 101 ther'ethrough, through which extends the moving contact rod 27 with very slight clearan'ce.
  • the interrupting 'orifice 100 has 'a fiang'e portion 103, which is threa'ded, as at 104, to the upper end of the insulating tube 99.
  • a staking rivet 105 may be provided to bring about va secure attachment.
  • the upper end of the inter'- rutping orifice 100 is fiared, as at 106.
  • the lower end of vthe insulating pressure tube or casing 99 is threaded, as at 107, to secure an apertured metallic base plug 108 fixedly in place.
  • the metallic apertured base plug functions as 'a valve seat vfor a valve disc 114.
  • the base plug '108 ' has apertures 109 theretihrough to permit a fiushing convection flow of gas into the pressure chanrber 40 following arc interruption.
  • Plastic rivets 110 fiXedly secure the base plug 108 into position.
  • the base plug 108 is th'read'ed, as at 111, and is also provided with a recess 112, which accommodates spring means 113, which 'serves to bias the valve disc 114 to its upper open position.
  • the valve disc 114 slides over a bushing 115 also threadedly secured to the stationary contact rod support 24.
  • a cup-shaped 'baffie plate 118 is provided 'to protect the normally open valve means 116.
  • the cup-shaped baflie plate l118 has 'a threade'd bore 119, which Vis threaded ⁇ onto the stationary Vcontact rod support 24, as shown in PIG. '6.
  • Apertured ;guide discs 123, Vcomposed of a suitable material, such as polytetrafluoroethyl'ene are provided. This material has the characteristic of resisting 'action from the sulfurghexailuoride gas.
  • the apentur'ed guide discs 123 are disposed within ⁇ a recess 124 provided at the lower end of a metallic tube 1625, forrned 'of aluminum, or the like.
  • the apertured guide ⁇ discs 123 may be staged into position as shown. 'llhey assist in guiding themovable contact 26 through the orifie opening 101 during the closing operation.
  • the upper end of the aluminum tube 125 may be threadedly secured, as at 126, to the upper 'casting plate 91', which is preferably provided with aper'tures ,127 to permit intercommunication between the region 128 interiorly of casing 84 and the region 152 'interiorly of mechanism housing 21.
  • poiitions 'of moving contact 26 'and stationary cont'act 25 are, prefe'rably -faced with ⁇ apsilver-tungsten alloy, as provided by the contact tips 278, 38, as shown in PIG. '6.
  • ah ar'c 133 is drawn within the region 129 interiorly of pressure chamber 40. This will ;build up the pressure therein and imrnediately effect closure of the valve disc 114 over the apertures 109 associated with the normally-open Valve means 116.
  • the pressure will be substantially retained within the region 129 because of the existence of slight clearance between the contact rod 27 and the orifice restriction 101.
  • a distinct advantage of the present invention as applied to a load-break disconnecting switch is that the pressure acts upon the end of the moving contact rod 26 and tends to eifect its ejecton from the pressure chamber 40. This will assist the overcenter tension spring 75 in pulling the moving contact rod 27 to its upper fully-open position. As shown in FIG. 8, when the movable contact 26 has just cleared 'the flared portion 106 of interrupting orifice 100, the arc 133, drawn between contacts 25 and 26, will be extinguished by the outflowing gases, as indicated by the arrows 130.
  • the spring 113 effects reopening of the valve disc 114 to permit a convection flow of fluid back into the arcing chamber 40 in readiness -for a subsequent opening operation.
  • this is necessary if we wish to make several interruptions within a limited time. It has been discovered from tests that an enclosed chamber without vents will give abut two interruptions one after the other, but will usually fail upon the third trial.
  • the normally-open valve means 116 fresh gas is admitted by convection flow into the arcng chamber 40 following the subsidence of the pressure within the region 129.
  • the interrupting unit 135 includes a pressure chamber, generally designated by the reference numeral 136, within which two series breaks are established.
  • the pressure chamber 136 includes an insulating tube 137, which is threaded at its lower end, as at 138, to secure the normally open valve means 116 into position.
  • the cup-shaped baflle plate 118 is the same as employed heretofore in connection with FIGS. 6 and 8.
  • a considerable portion of the upper end of the insulating tube 137 is threaded, as at 139, to secure into place an intermediate contact guide 141, preferably composed of polytetrafluoroethylene.
  • 'I'he intermediate contact guide 141 has a threaded annular por-ton 142, which is threadedly supported from the casing 137. Apertures 143 are provided through the contact guide 141, as shown.
  • a recess 144 is provided to accommodate a biasing spring 145, w'hich sea-ts at its lower end against the bottom 146 of recess 144.
  • the upper end of compression spring 145 seats against an annular flange portion 147, constituting a part of a movable intermediate contact, generally designated tby the reference numeral 148.
  • An annular recess 150 is provided in the contact guide 141 to accommodate a snap ring 151 composed of polytetrafluoroethylene.
  • the lower end of the intermediate contact 148 is provided with a contact tip 152 of an arcresisting material, such as a silver-tungsten alloy.
  • the stationary contact 154 is provided with a contact tip 153 of an arc-resistant material. Supporting the relatively stationary contact 154 from the base plate 89 is a stationary contact support rod 155.
  • the upper end of the intermediate contact 148 is faced with an arc-resistingl alloy, constituting a contact tip 157.
  • the movable contact 159 is also provided with an arc-resisting contact tip 158.
  • a pressure-generating arc 161 is established between the stationary contact 154 and the movable intermediate contact 148.
  • an interrupting arc 162 is later established between the intermediate contact 143 and the movable contact 159, following stopping of the intermediate contact 148 at the snap ring 151.
  • the compression spring 145 permits a limited following travel of the intermediate contact 148 with the movable contact rod 159 so that the pressure-generating arc 161 is established first. Subsequently, following halting of the intermediate contact 148 by the snap ring 151, the interrupting arc 162 will be formed.
  • the interrupting arc 162 is established longitudinally within an elongated interrupting orifice, generally desgnated by the reference numeral 163, and having an annular supporting flange 164, which is threaded, as at 165, to the upper end of the insulating tube 137. Staking rivets extend through the upper end 166 of the tube 137 as shown in FIG. 9.
  • the interrupting orifice 163 has a restricted orifice opening 167, through which the moving contact rod 159 moves with slight clearance.
  • the upper end of the interrupting orifice 163 is preferably flared, as at 168.
  • the pressure-generating arc 161 builds up pressure Within the interior region 170 within insulating tube 137 and forces cool gas toward the interrupting arc 162.
  • the pent-up relatively cool gases will be vented out of the region 170 and through the flared opening 168 to effect extinction of the interrupting arc 162.
  • the interrupting arc 162 is drawn through the lengthened orifice 163 so as to be subjected to the very effective flow of relatively cool gases, as they are forced from the pressure chamber 136. As was the case with the pressure chamber 40 of the interrupting device 13 in FIG.
  • the normally-open valve means 116 of the modified interrupting unit will also be closed during the existence of high-pressure conditions within the region 170 internally of the insulating tube 137. Following extinction of the interrupting arc 162, the pressure Will subside within the insulating casing 137, and the compression spring 113 will effect reopening of the valve disc 114.
  • FIGS. 7 and 9 The arrangement of FIGS. 7 and 9 has the advantage that the arcs 161, 162 are spaced somewhat apart so that relatively cool gas is forced toward the interrupting arc 162.
  • the pressure within the pressure chamber acts upon the lower end Vof the moving contact rod 27, 159 and tends to efiect the ejection thereof from the pressure chamber 40, 136. This action assists the overcenter tension spring 75 in eifecting quick retracton of the moving contact rod 27, 159.
  • the diameter of the contact rod and the length of the interrupting orifice structures 100, 163 depend upon the current rating of the device and the voltage which is to be interrupted.
  • the interrupting device illustrated in FIG. 6 is particularly adapted for a GOO-ampere 138 kv. rating. For a IZOO-ampere switch, the diameter of the moving contact rod would, of course, be increased.
  • the explosion pot type of device of the present inventon has a number of advantages over the puffer type of device, as illustrated in the aforesaid Lingal patent, since the weight and mass of the moving parts has been considerably decreased to obtain very high-speed operation.
  • the dilferences between the 600 and 1200- ampere unitsr consists only in'changes in the size of the contact tips and size of the orifices.
  • the deyice is particularly advantageous, when utilized With sulfur ;hexafluoride gas, other gases, or even air may be mployed.
  • a load-break disconnectin'g switch including a pair of spaced line terminals, movable switch blade means bridging said pair of spaced line terminals in the closedcircuit position of the switch, an interrupting device associated with one of the line terminals and having an Operating mechanism associated therewith, the movable switch blade means eifecting actuation of said Operating mechanism during the opening operation, the interrupt- -ing device including an insulating tubular outer casing containing an arc-extinguishing fluid, an inner interrupting element including means at least partially of insulatfing material defining a pressure chamber, a relatively stationary contact support rod extending Within said tubular outer casing and constituting the sole support for said inner intcrrupting element, said inner interrupting element being spaced inwardly from the inner Walls of said outer tubular casing to provide free space for the 'circulation of said arc, exti'nguishing llui'd about said inner interrupting element, the intei'rupting element including' a tubular insulating substantially
  • a load-breaking disconnecting switch including a pair of spaced line terminals, movable switch blade means bridging said pair of spaced line terminals in the closedcircuit position of the switch, an interrupting device associated with one of the line terminals and having an Operating mechanism associated therewith, the movable switch blade means etfecting actuation of said Operating mechanism during the opening operation,
  • the interrupting device including an insulating tubular outer casing containing an arc-extinguishing fluid, an inner interrupting element including means at least partially of insulating material defining a pressure chamber, a relatively stationary contact support rod extending Within said tubular outer casing and constituting the sole support for said inner interrupting element, said inner interrupting element being spaced inwardly from the inner Walls of said outer tubular casing to provide free space for the circulation of said arc-extinguishing fluid about said inner interrupting element, the interrupting element including a tubular insulating substantially closed pressure casing having an insulating orifice disposed adjacent one end thereof, an apertured metallic

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US824286A 1959-07-01 1959-07-01 Circuit interrupters Expired - Lifetime US3032632A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US824286A US3032632A (en) 1959-07-01 1959-07-01 Circuit interrupters
DEW27887A DE1212191B (de) 1959-07-01 1960-05-19 Unterbrechungseinrichtung fuer elektrische Schalter
CH666360A CH385319A (de) 1959-07-01 1960-06-10 Unterbrechungseinrichtung für einen elektrischen Schalter

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US824286A US3032632A (en) 1959-07-01 1959-07-01 Circuit interrupters

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Cited By (10)

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US3218404A (en) * 1962-11-13 1965-11-16 Mc Graw Edison Co Disconnect switch with high speed grounding switch
US4243854A (en) * 1979-11-05 1981-01-06 Pahl Richard B Quick-break attachment for a pole-top air-break switch
FR2675944A1 (fr) * 1991-04-26 1992-10-30 Soule Sa Dispositif de coupure d'exterieur pour ligne electrique.
FR2693837A1 (fr) * 1992-07-20 1994-01-21 Soule Sa Dispositif de coupure de ligne électrique à fort courant.
US5359167A (en) * 1992-05-11 1994-10-25 Gec Alsthom Energie Inc. Whip for a high tension section switch
US6236010B1 (en) 1999-07-14 2001-05-22 Southern States, Inc. Circuit interrupter including a penetrating electrical contact with grip and release structure
US6316742B1 (en) 1999-07-14 2001-11-13 Southern States, Inc. Limited restrike circuit interrupter used as a line capacitor and load switch
US6762385B1 (en) * 2003-01-14 2004-07-13 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US7078642B2 (en) 2003-01-14 2006-07-18 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US20170317486A1 (en) * 2016-05-02 2017-11-02 Hubbell Incorporated Whip and loop interrupter combination

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218404A (en) * 1962-11-13 1965-11-16 Mc Graw Edison Co Disconnect switch with high speed grounding switch
US4243854A (en) * 1979-11-05 1981-01-06 Pahl Richard B Quick-break attachment for a pole-top air-break switch
FR2675944A1 (fr) * 1991-04-26 1992-10-30 Soule Sa Dispositif de coupure d'exterieur pour ligne electrique.
US5359167A (en) * 1992-05-11 1994-10-25 Gec Alsthom Energie Inc. Whip for a high tension section switch
FR2693837A1 (fr) * 1992-07-20 1994-01-21 Soule Sa Dispositif de coupure de ligne électrique à fort courant.
US6316742B1 (en) 1999-07-14 2001-11-13 Southern States, Inc. Limited restrike circuit interrupter used as a line capacitor and load switch
US6236010B1 (en) 1999-07-14 2001-05-22 Southern States, Inc. Circuit interrupter including a penetrating electrical contact with grip and release structure
US6762385B1 (en) * 2003-01-14 2004-07-13 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US7078642B2 (en) 2003-01-14 2006-07-18 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US20170317486A1 (en) * 2016-05-02 2017-11-02 Hubbell Incorporated Whip and loop interrupter combination
US10148081B2 (en) * 2016-05-02 2018-12-04 Hubbell Incorporated Whip and loop interrupter combination
US10541528B2 (en) 2016-05-02 2020-01-21 Hubbell Incorporated Whip and loop interrupter combination
US11101637B2 (en) 2016-05-02 2021-08-24 Hubbell Incorporated Whip and loop interrupter combination

Also Published As

Publication number Publication date
DE1212191B (de) 1966-03-10
CH385319A (de) 1964-12-15

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