US3895202A - Multibreak metal-clad puffer type circuit interrupter having staggered arc-extinguishing units - Google Patents

Multibreak metal-clad puffer type circuit interrupter having staggered arc-extinguishing units Download PDF

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Publication number
US3895202A
US3895202A US479511A US47951174A US3895202A US 3895202 A US3895202 A US 3895202A US 479511 A US479511 A US 479511A US 47951174 A US47951174 A US 47951174A US 3895202 A US3895202 A US 3895202A
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United States
Prior art keywords
units
arc
enclosure
extinguishing
puffer
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Expired - Lifetime
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US479511A
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English (en)
Inventor
Jean-Claude Okerman
Georges Henry
Claude Mounier
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Merlin Gerin SA
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Merlin Gerin SA
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • 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
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • Longitudinal beams extend in the enclosure to support a plurality of transverse support plates forming partition walls defining therebetween a number of sections housing the different arc-extinguishing units.
  • the units of odd rank are aligned on a first axis and the units of even rank are Int. CI. n d d b r I gne on a secon axis, oth axes being symmetri- [5 8] F'eld Search 200/148 145 144 AP cally offset from the axis of the enclosure.
  • This invention relates to high-voltage metal-clad multibreak circuit interrupters and more particularly to a pole of such circuit interrupters having a plurality of electrically series-connected arc-extinguishing chambers in which an arc is drawn between a pair of separable contacts whereby a blast of compressed arcextinguishing gas is directed to the arc in order to quench the latter.
  • the different arc-extinguishing units are housed in a metal grounded enclosure of generally cylindrical shape filled with a compressed gas having a high arc-extinguishing power and a high dielectric strength, such as sulfur hexafluoride.
  • the high-voltage metalclad circuit interrupters of the prior art operate at dual pressure and need therefore a costly compressor station to deliver the arc-extinguishing gas at a relatively high pressure.
  • the different arc-extinguishing units of a pole are aligned on a common axis so that the total length of the pole is important and increases again the cost of the installation.
  • FIG. 1 is a schematic side elevational view of a pole of a circuit interrupter according to the invention, the outer casing being shown in axial cross section and the control box being shown partially broken away;
  • FIG. 2 is a front elevational view of the pole according to FIG. 1, the casing being again shown in cross section;
  • FIG. 3 is a schematic plan view wherein the top cover of the casing has been removed
  • FIG. 4 is a cross sectional view on an enlarged scale of an arc extinguishing device utilized in the circuit interrupter shown in FIG. 1;
  • FIG. 5 shows the electric circuit diagram of an embodiment of the invention comprising auxiliary circuit opening and/or closing resistors
  • FIG. 6 is a view similar to that of FIG. 3, showing schematically the arrangement of the resistors of FIG. 5.
  • a cylindrical metallic pressure enclosure or outer casing 10 comprises a pair of lateral cylindrical projections 12, 14 which are vertically spaced apart and support through generally cone-shaped insulators 16, 18 axial conductors 20, 22, respectively, constituting input and output connections or bushings to connect the electrically series-connected arcextinguishing devices of the circuit interrupter to an external circuit or network.
  • a top cover 26 and a bottom cover 24 are removably bolted to the end portions of the casing 10 in a gastight manner and the casing is filled with a compressed gas of high arc-extinguishing and dielectric power, such as sulfur hexafluoride of, for example 3.5 bars.
  • the cylindrical enclosure 10 shown in the FIGS. is arranged vertically but it is of course also possible to dispose the casing horizontally on a pedestal 28, the whole being in either case on earth potential.
  • the different elements of the multibreak pole unit located within the enclosure 10 are supported by a pair of longitudinally extending beams of insulating material 30, 32 which are secured to the covers 24, 26 by bolts 34.
  • a plurality of circular partition plates or discs of conductive material 36, 38, 40, 42, 44 are spaced apart along the beams 30, 32 and secured thereto in an appropriate manner.
  • the end plates 36, 44 are aligned with the bushings 20, 22, respectively, and electrically connected thereto through plug-in connections 46, 48, respectively.
  • the intermediate plates 38, 40, 42 are regularly spaced apart along the beams 30, 32 so as to define four successive sections 50, 52, 54, 56, each of which corresponds to a breaking interval of the pole which comprises on the whole four breaking points, in the example shown.
  • the distance between the plates 36 to 44 is of course adapted to the required insulation level for compressed sulfur hexafluoride.
  • the arc-extinguishing devices which are electrically series-connected and located in the respective sections 50, 52, 54, 56 are of the puffer type and identical so that only one of them, associated with the section 56, will now be described in more detail with reference to FIG. 4.
  • the arc-extinguishing unit comprises two distinct parts, one of which is supported by the plate 44 and associated with a stationary contact 60 while the other, 62, is supported by the adjacent plate 42 and associated with a movable contact 64 equipped with a puffer device having a cylinder 66 and a piston 68.
  • the part 62 is well known so that it suffices to recall that the movable cylinder 66, which is rigidly secured to the movable contact 64, slides on the stationary piston 68, which is supported by the plate 42, so that the gas confined between the confronting wall portions of the cylinder 66 and the piston 68 can be compressed by a downward movement (with respect to FIG.
  • the parts 58 is also well known and comprises a stationary contact 60 cooperating with a plurality of rear openings 72 exhausting the blast gas.
  • the arcing contacts 64 and 60 are shown solid but may also be hollow.
  • main contacts 74, 76 are. associated with the arcing contacts to ensure the electric continuity in closed position of the circuit interrupter.
  • the part 58 traverses a central hole 78 of the plate 44 so as to project therefrom on both sides of the plate so that the contacts 60, 76 are arranged on one side of the plate 44 in confronting relation with the part 62, and the exhaust opening -member 72 on the opposite side of the plate 44.
  • movable elements of the part 62 are actuated by means of a pair of control rods 80, 82 secured to the cylinder 66.
  • the four breaking devices are arranged in two groups, the devices of odd rank 84, 86 being essentially located in the sections 50, 54, respectively, and the elements of even rank 88, 90 extending substantially within the sections 52, 56, respectively.
  • first axis 92 (FIG. 3) which is laterally offset with respect to the axis of the cylindrical enclosure and the devices 88, 90 of even rank are aligned on a second axis 94 which is also offset with respect to the axis of the cylinder, both axes 92, 94 being symmetrical with respect to the axis of the cylinder 10.
  • the off-centering of the axes 92, 94 is sufficient to permit the juxtaposition on each intermediate plate 38, 40, 42 of a part 62 and of a part 58 pertaining to the arc-extinguishing devices 84, 88; 88, 86', and 86, 90, respectively.
  • the staggering of the devices 84 to 90 permits an overlapping of adjacent devices and thereby a reduction of the overall length of the pole.
  • the conducting plates 36, 38, 40, 42, 44 ensure the electrical connection between the contacts and the input and output conductors 20, 22, on the one hand, and between the movable and stationary contacts of successive arc-extinguishing devices, on the other hand.
  • Voltage-dividing condensors 96 may advantageously be inserted between successive plates 36 to 44 in a wellknown manner.
  • the movable contacts and the puffer mechanisms of the arc extinguishing-devices of even rank 88, 90 are mechanically actuated by the two rods 80, 82 which are in turn actuated by a control rod 98 which is directly connected thereto or indirectly through the movable elements of the arc-extinguishing device 88.
  • the control rod 98 traverses the bottom cover 24 in a gastight manner and projects into a control box 100.
  • the movable elements of the arc-extinguishing devices of odd rank 84, 86 are actuated by a pair of control rods 102, 104 which are in turn actuated by a control rod 106 which extends parallelly to the control rod 98 and protrudes also, after having traversed the cover 24 in a gastight manner, into the control box 100.
  • the control rod 98 actuates the devices 88, 90 and the control rod 106 the devices 84, 86.
  • Each control rod 98, 106 may have an individual driving mechanism but in the embodiment shown in the FIGS, a hydraulic operating cylinder device 108 having a return spring (not shown) actuates the two control rods 98, 106 may have an individual driving mechanism but in the embodiment shown in the FIGS, a hydraulic operating cylinder device 108 having a return spring (not shown) actuates the two control rods 98, 106. In this manner, the control of the rods 98, 106 is automatically synchronized so that all the contacts of the different devices open simultaneously.
  • the active parts of the pole are formed by standardized elements which permit a modular construction of a range of circuit interrupters of different ratings.
  • a pole having only two arcextinguishing units in which case only three connecting plates are necessary.
  • the inner equipment of the enclosure comprising the insulating support beams 30, 32 and the cross plates 36 to 44 with the arc-extinguishing units, constitutes a rigid assembly which can be withdrawn as a unit from the enclosure 10 in order to permit maintenance and exchange operations.
  • the grounding of the metal-clad apparatus ensures the safety of the installation.
  • FIGS. 5 and 6 show diagrammatically an embodiment of the invention comprising resistors of the kind mentioned.
  • each unit 84, 88, 86 is shunted by a series-connection of a resistor 110, H4, 1 18, 122 with an auxiliary interrupter 112, 116, 120, 124, respectively.
  • the resistorinterrupter units 110 to 124 are staggered along two parallel axes 126, 128 visible on FIG. 6, and imbricated between the condensors 96.
  • the coaxial auxiliary interrupters 112, and 116, 124 are actuated in a manner similar to that of the main arc-extinguishing devices by a pair of auxiliary control rods (not shown) having a lowermost end portion extending within the control box 100.
  • the central control within the control box 100 permits to obtain in a simple manner any desired sequence of the operation of the different auxiliary and main contacts.
  • the resistor-interrupter units may all be coaxial or arranged along two or more axes.
  • a multibreak arc-extinguishing pole unit for a high-voltage metal-clad puffer type circuit interrupter comprising:
  • each unit having a pair of elongated separable contact means extending parallelly to said longitudinal direction to draw an arc therebetween, and a puffer mechanism coaxial with said contact means and adapted to draw gas from the inside of said enclosure to direct a blast of compressed gas on said arc, said contact means comprising a relatively stationary contact and a movable contact; said puffer mechanism including relatively movable piston and cylinder means arranged at one end of the corresponding arc-extinguishing unit adjacent said movable contact and vent opening means arranged at the opposite end of the unit adjacent said relatively stationary contact to exhaust said blast of gas into said enclosure,
  • a circuit interrupter according to claim 1, further extinguishing units of even rank being aligned comprising a plurality of voltage-dividing condensors along a second axis, said axes extending parallelly inserted between said transverse plates.
  • a circuit interrupter according to claim 1 further respect to the axis of said cylindrical enclosure, 10 comprising a plurality of series-connected resistor and said transverse plates supporting said units in such a auxiliary interrupter means inserted between said mannerthat in all sections but the first said vent transverse plates.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)
US479511A 1973-06-28 1974-06-14 Multibreak metal-clad puffer type circuit interrupter having staggered arc-extinguishing units Expired - Lifetime US3895202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7323817A FR2235470B1 (it) 1973-06-28 1973-06-28

Publications (1)

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US3895202A true US3895202A (en) 1975-07-15

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US479511A Expired - Lifetime US3895202A (en) 1973-06-28 1974-06-14 Multibreak metal-clad puffer type circuit interrupter having staggered arc-extinguishing units

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US (1) US3895202A (it)
JP (1) JPS5741054B2 (it)
ES (1) ES427403A1 (it)
FR (1) FR2235470B1 (it)
IT (1) IT1014396B (it)
NL (1) NL176892C (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105880A (en) * 1976-01-20 1978-08-08 Licentia Patent-Verwaltungs-G.M.B.H. Arc blow-out switch
US4123637A (en) * 1976-12-27 1978-10-31 Siemens-Allis, Inc. High voltage air disconnect switch incorporating a puffer-type load break switch
US4236054A (en) * 1977-08-12 1980-11-25 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4319105A (en) * 1976-12-27 1982-03-09 Siemens-Allis, Inc. High voltage air disconnect switch incorporating a puffer type load break switch
US4383150A (en) * 1978-09-12 1983-05-10 Westinghouse Electric Corp. Circuit-interrupters having shunting capacitance around the separable power contacts with capacitance disconnecting means therefor
US4562319A (en) * 1979-06-06 1985-12-31 Merlin Gerin Metal-clad puffer-type circuit-breaker having closing resistors
US5578804A (en) * 1994-04-19 1996-11-26 Abb Management Ag Metal-enclosed gas-insulated switching installation
FR2786313A1 (fr) * 1998-11-20 2000-05-26 Siemens Ag Disjoncteur a haute tension a deux chambres de coupures
US20090166333A1 (en) * 2008-01-02 2009-07-02 Tour Areva Circuit breaker having a plurality of breaker chambers arranged in parallel, with a common transmission and reduced length
US20100270266A1 (en) * 2007-10-15 2010-10-28 Gwenael Marquezin Circuit breaker with two aligned breaker chambers, a common transmission, and reduced size

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447090A1 (fr) * 1979-01-16 1980-08-14 Hitachi Ltd Disposition et commande d'un disjoncteur haute tension blinde a gaz isolant
JPS58209024A (ja) * 1982-05-28 1983-12-05 株式会社東芝 ガスしや断器
JPS5971225A (ja) * 1982-10-14 1984-04-21 株式会社東芝 多点切３相１タンク型ガスしや断器
JPH0435221U (it) * 1990-07-13 1992-03-24
JPH05234117A (ja) * 1991-12-24 1993-09-10 Internatl Business Mach Corp <Ibm> 光ヘッド装置及び光ディスク記憶システム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913556A (en) * 1956-03-14 1959-11-17 Westinghouse Electric Corp Circuit interrupters
US2979591A (en) * 1958-09-19 1961-04-11 Westinghouse Electric Corp Circuit interrupters
US3300609A (en) * 1963-05-15 1967-01-24 Ass Elect Ind Switchgear for high voltage power circuits with removable vacuum switch units

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749412A (en) * 1953-09-17 1956-06-05 Gen Electric Electric circuit interrupter
FR1363441A (fr) * 1962-05-07 1964-06-12 Westinghouse Electric Corp Disjoncteur à gaz sous pression
FR1434407A (fr) * 1965-02-26 1966-04-08 Alsthom Cgee Nouvelles dispositions de disjoncteurs à coupure dans le vide pour les très hautes tensions
FR2087645A5 (it) * 1970-05-26 1971-12-31 Merlin Gerin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913556A (en) * 1956-03-14 1959-11-17 Westinghouse Electric Corp Circuit interrupters
US2979591A (en) * 1958-09-19 1961-04-11 Westinghouse Electric Corp Circuit interrupters
US3300609A (en) * 1963-05-15 1967-01-24 Ass Elect Ind Switchgear for high voltage power circuits with removable vacuum switch units

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105880A (en) * 1976-01-20 1978-08-08 Licentia Patent-Verwaltungs-G.M.B.H. Arc blow-out switch
US4123637A (en) * 1976-12-27 1978-10-31 Siemens-Allis, Inc. High voltage air disconnect switch incorporating a puffer-type load break switch
US4319105A (en) * 1976-12-27 1982-03-09 Siemens-Allis, Inc. High voltage air disconnect switch incorporating a puffer type load break switch
US4236054A (en) * 1977-08-12 1980-11-25 Licentia Patent-Verwaltungs-G.M.B.H. Gas-blast circuit breaker
US4383150A (en) * 1978-09-12 1983-05-10 Westinghouse Electric Corp. Circuit-interrupters having shunting capacitance around the separable power contacts with capacitance disconnecting means therefor
US4562319A (en) * 1979-06-06 1985-12-31 Merlin Gerin Metal-clad puffer-type circuit-breaker having closing resistors
US5578804A (en) * 1994-04-19 1996-11-26 Abb Management Ag Metal-enclosed gas-insulated switching installation
FR2786313A1 (fr) * 1998-11-20 2000-05-26 Siemens Ag Disjoncteur a haute tension a deux chambres de coupures
US20100270266A1 (en) * 2007-10-15 2010-10-28 Gwenael Marquezin Circuit breaker with two aligned breaker chambers, a common transmission, and reduced size
US8653395B2 (en) 2007-10-15 2014-02-18 Alstom Technology Ltd Circuit breaker with two aligned breaker chambers, a common transmission, and reduced size
US20090166333A1 (en) * 2008-01-02 2009-07-02 Tour Areva Circuit breaker having a plurality of breaker chambers arranged in parallel, with a common transmission and reduced length
FR2925976A1 (fr) * 2008-01-02 2009-07-03 Areva T & D Sa Disjoncteur a plusieurs chambres de coupure agencees en parallele, a transmission commune et encombrement longitudinal reduit
EP2077570A1 (fr) 2008-01-02 2009-07-08 Areva T & D SA Disjoncteur à plusieurs chambres de coupure agencées en parallèle, à transmission commune et encombrement longitudinal réduit
US8044317B2 (en) 2008-01-02 2011-10-25 Areva T&D Sa Circuit breaker having a plurality of breaker chambers arranged in parallel, with a common transmission and reduced length
CN101477913B (zh) * 2008-01-02 2013-02-20 阿雷瓦T&D股份公司 具有多个平行布置的断路器室且具有公共的传动机构及减小的长度的断路器

Also Published As

Publication number Publication date
NL7408221A (it) 1974-12-31
ES427403A1 (es) 1976-07-16
FR2235470B1 (it) 1976-05-07
NL176892C (nl) 1985-06-17
NL176892B (nl) 1985-01-16
JPS5741054B2 (it) 1982-09-01
JPS5036967A (it) 1975-04-07
FR2235470A1 (it) 1975-01-24
IT1014396B (it) 1977-04-20

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