US3418439A - High-voltage electric circuit breaker - Google Patents

High-voltage electric circuit breaker Download PDF

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Publication number
US3418439A
US3418439A US499205A US49920565A US3418439A US 3418439 A US3418439 A US 3418439A US 499205 A US499205 A US 499205A US 49920565 A US49920565 A US 49920565A US 3418439 A US3418439 A US 3418439A
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United States
Prior art keywords
interrupters
interrupter
circuit breaker
housing
metal housing
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
US499205A
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English (en)
Inventor
Edward J Casey
Milton L Heintz
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General Electric Co
Original Assignee
General Electric Co
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Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US499205A priority Critical patent/US3418439A/en
Priority to GB40560/66A priority patent/GB1131520A/en
Priority to JP6536666A priority patent/JPS4321211B1/ja
Priority to ES0332238A priority patent/ES332238A1/es
Priority to FR80791A priority patent/FR1499529A/fr
Priority to CH1518966A priority patent/CH448214A/de
Priority to DE1966G0048247 priority patent/DE1640182A1/de
Application granted granted Critical
Publication of US3418439A publication Critical patent/US3418439A/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • H01H33/008—Pedestal mounted switch gear combinations
    • 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • 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
    • H01H2033/146—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc using capacitors, e.g. for the voltage division over the different switches

Definitions

  • Vacuum-type circuit breaker comprising a high voltage metal housing mounted on a vertically-extending insulating support.
  • First and second vacuum interrupters are mounted at one side of the housing and third and fourth interrupters at the opposite side.
  • First and second horizontally-extending hollow insulators on opposite sides of the housing respectively mount the first and fourth interrupters, whereas the second and third interrupters are mounted directly on the housing in offset, laterally-spaced relationship to the first and second insulators, respectively.
  • the interrupters are electrically connected in such a manner that current flows successively through the first, second, third and fourth interrupters.
  • This invention relates to a high voltage electric circuit breaker and relates more particularly to a high voltage electric circuit breaker that comprises a plurality of enclosed interrupter units electrically connected together in series.
  • the interrupter units are vacuum-type circuit interrupters, each comprising a sealed envelope and relatively movable contacts located therein.
  • the seriesconnected interrupter units are mounted in aligned relationship to form an assembly, and an insulating housing of tubular form is provided about the assembly to provide a weather-proof enclosure.
  • the individual interrupter units are usually operated by one or more movable operating rods extending longitudinally of the assembly. These operating rods are typically located in the cylindrical space between the interrupter assembly and the insulating enclosure.
  • a disadvantage of such an arrangement is that the enclosure diameter must be relatively large in order to accommodate both the interrupter assembly and the operating rods, and such large diameter insulating enclosures are quite expensive.
  • An object of the present invention is to arrange the interrupter units in such a manner that inexpensive insulating enclosures of a relatively small diameter can be used for enclosing the interrupter units and the operating rods.
  • Another object is to provide a high voltage circuit breaker that lends itself to being constructed of modular units which can be quickly assembled and which can be used in varying numbers to provide circuit breakers of different voltage ratings.
  • Another object is to construct the circuit breaker in such a manner that individual interrupter units can be easily inspected and replaced, if necessary, without disturbing the remaining interrupter units.
  • a high voltage electric circuit breaker that comprises a metal housing normally at a high voltage and an insulating support on which the metal housing is mounted.
  • First and second circuit interrupters are located at one side of the housing, and third and fourth circuit interrupters are located at another side of the housing.
  • a first generally horizontally-extending hollow insulator is mounted on the housing at said one side, and a second generally horizontally-extending hollow insulator is mounted on the housing at said other side.
  • Means is provided for mounting the first circuit interrupter on one of the hollow insulators and the fourth circuit interrupter on the other of the hollow insulators.
  • Additional means is provided for mounting the second and third interrupters on the metal housing in offset laterally-spaced relationship to said hollow insulators.
  • the four interrupters are electrically connected in series so that current can flow successively through the first, second, third and fourth interrupters.
  • a pair of generally horizontally extending operating rods for the first and fourth interrupters, respectively, are provided, and these operating rods extend from their respective interrupters through the hollow insulators into the interior of the metal housing.
  • Additional operating rods are provided for the second and third interrupters, respectively, and these operating rods extend from their respective interrupters into the interior of the metal housing.
  • Located inside the metal housing and mechanically coupled to these operating rods is operating means for producing substantially simultaneous operation of the operating rods.
  • FIG. 1 is a side elevational View, partially schematic, of a circuit breaker embodying one form of my invention.
  • FIG. 2 is a plan view of the circuit breaker of FIG. 1. Certain portions of the circuit breaker of FIG. 1 have been removed for clarification.
  • FIG. 3 is a sectional view taken along the line 3-3 of FIG. 2. The circuit breaker is shown in a closed position.
  • FIG. 4 is a schematic view of the circuit breaker of FIG. 3, the parts in FIG. 4 being shown in an open position.
  • FIG. 5 is a sectional view along the line 55 of FIG. 3.
  • FIG. 6 is a schematic illustration of a modified form of the invention.
  • FIG. 7 is an enlarged detail view of a portion of FIG. 3.
  • the circuit breaker shown therein comprises a metal housing 11 that is normally at a high voltage with respect to ground.
  • This housing 11 is mounted on a cylindrical column 12, preferably of porcelain, which electrically isolates the metal housing 11 from ground.
  • the lower end of the insulating support column 12 is suitably mounted on a conventional metal framework 13, which is at ground potential.
  • the metal housing 11 serves as a support on which the interrupting units of the circuit breaker are mounted. These interrupting units can best be seen in FIG. 3, where four interrupting units 21, 22, 22a and 21a are shown. In a preferred form of the invention, all of these interrupter units are substantially identical. These interrupting units can be of a conventional construction, but to facilitate an understanding of the invention a detailed description of one of them is presented hereinafter.
  • the first and second interrupting units 21 and 22 are located at one side of the metal housing 11, and the third and fourth interrupting units 22a and 2111 are located at an opposite side of the housing. All the interrupting units are electrically connected together in series, as will soon be described.
  • the interrupting units at the right-hand side of the housing 11 are mounted on the housing in the same manner as those on the left-hand side of the housing. Accordingly, the mounting of only the right-hand interrupting units will be described in detail.
  • Corresponding parts at the left-hand side of the housing 11 are assigned corresponding reference numerals except with the suflix a.
  • Each interrupting unit is preferably a vacuum-type circuit interrupter and can be of any suitable conventional design.
  • each of the interrupters comprises a highly-evacuated sealed envelope 30 in which a pair of separable butt-type contacts 31 and 32 are mounted. The contacts have been suitably processed to free them of sorbed gases and contaminants that decompose in the presence of an arc to form permanent gases.
  • the envelope 30 comprises a tubular housing 33 of insulating material and a pair of end caps 34 and 35 closing off the ends of the tubular housing and suitably sealed thereto.
  • the right-hand contact 31 (of interrupter 21) is a stationary contact that is supported on the inner end of a conductive rod 36.
  • the conductive rod 36 projects. in sealed relationship through the right-hand end of the envelope and is rigidly attached to the end cap 34 by welding.
  • the other contact 32 of the circuit interrupter 21 is a movable contact brazed to the inner end of a contactactuating rod 38, referred to hereinafter as the movable contact rod.
  • This movable contact rod 38 is mounted for substantially straight line movement along its longitudinal axis and projects freely through an opening in the lefthand end cap 35.
  • a flexible metallic bellows 40 is interposed between the left-hand end cap 35 and the contact rod 38 to provide a seal about the contact rod that allows for longitudinal movement thereof without impairing the vacuum inside the envelope 10.
  • Opening of the circuit interrupter 21 is eflected by applying a force to the contact rod 38 to drive the movable contact 32 to the left out of engagement with the other contact 31.
  • Initial separation of the contacts establishes a circuit interrupting are between the contacts, and this are will persist until about the time a natural current zero is reached. The are will then vanish and be prevented from reigniting by the high dielectric strength of the vacuum, thus completing the circuit-interrupting operation.
  • Closing of the interrupter 21 is eflected by driving the left-hand contact 32 to the right from its open position of FIG. 4 into engagement with the other contact 31, thus reestablishing the power circuit through the interrupter.
  • the actuating means for effecting opening and closing movement of the contact rod 38 will soon be described in detail, but first a description will be given of the structure that is relied upon for supporting each of the interrupters and for carrying current to and from the interrupters.
  • a horizontallyextending hollow cylinder 44 of an insulating material such as porcelain is provided.
  • the insulating cylinder 44 is suitably secured to the metal housing 11; and at its right-hand end, the cylinder 44 carries metallic structure 4 6 that is secured to the lefthand end plate 35 of the interrupter 21.
  • a plurality of tie rods 47 of a suitable insulating material are provided inside the cylinder 44. These tie rods 47 are clamped at their left-hand end to a wall of the metal housing 11.
  • each tie rod is threaded, and a nut 48 mounted thereon clamps a metal plate 50 against the right-hand end of the insulator 44.
  • a suitable stop nut 49 on each tie rod 47 limits the force applied by the nut 48.
  • the structure g at the end of insulator 44 is a box-like casing that has spaced-apart end walls 50 and 52 and an integrally formed body 53 connecting these end walls.
  • the body 53 has inspection openings therein that are normally closed by removable covers 54 suitably attached to the body 53.
  • the right hand end wall 52 is attached to the end plate 35 of the vacuum interrupter by series of studs. As may be seen in the enlarged view of FIG. 7, these studs 56 are integral with the end plate 35 of the interrupter, and nuts 57 on the studs, acting through suitable Belleville washers 58, clamp the end plate 35 to the end wall 52.
  • a hollow porcelain cylinder 60 is provided. This cylinder 60 surrounds the envelope 30 of the interrupter and is suitably joined to the end wall 52 at its left hand end. At the right hand end of the insulating cylinder 68, there is an end plate 62 that is suitably joined to the insulating cylinder 60. This end plate 62 serves as one terminal of the circuit breaker assembly.
  • a pair of flexible metallic braids 64 and 65 are provided at opposite ends of the interrupter. Braid 64 is suitably attached at its respective opposite ends to terminal plate 62 and the stationary contact rod 36. The other braid 65 is suitably attached at its respective opposite ends to the movable contact rod 38 and the body 53 of the metal casing Q.
  • current through the first interrupter 21 follows a path extending successively through parts 62, 64, 36, 31, 32, 38, 65, and 53.
  • the upper circuit interrupter is vertically spaced from the hollow insulator 44 and is mounted directly on the wall of metallic housing 11.
  • the upper interrupter 22 has studs 56 integral with its left-hand end cap through which the end cap is clamped to the wall of housing 11. Suitable nuts on the studs 86 act through Belleville washers to perform the clamping action, in the same general manner as depicted in FIG. 7.
  • a porcelain cylinder is provided for providing a weather-proof enclosure about the interrupter 22.
  • This porcelain cylinder 70 is suitably joined at its left-hand end to the metal housing 11.
  • an end plate 72 suitably joined thereto.
  • a pair of flexible metallic braids 74 and 76 are provided at its respective opposite ends.
  • the braid 74 is suitably joined at its respective ends to the end plates 72 and the stationary contact rod 36.
  • the other braid 76 is suitably joined at its respective opposite ends to the movable contact rod 38 of interrupter 22 and the identical movable contact rod 38 of interrupter 22a.
  • a conductive strap 80 of a high conductivity metal is suitably attached at its respective opposite ends to the parts 72 and 53. It will be apparent that conductive strap 80 connects the interrupters 21 and 22 in series. It will also be apparent that the braid 76 in metal housing 11 connects the series-connected interrupters 21, 22 at the right hand side of the metal housing 11 in series with the seriesconnected interrupters 21a, 22a at the left-hand side of the metal housing 11. Thus, all the interrupters are electrically connected together in series.
  • the metal housing 11 is electrically connected to the end plates 35 of the two interrupters 22 and 22a, and these end plates 35 are electrically connected to the movable contacts 38 of their respective interrupters by suitable means (not shown).
  • metal housing 11 is at line potential. When the circuit breaker is open, the metal housing 11 is at approximately mid-potential with respect to the two terminals of the circuit breaker, as will soon be explained.
  • a contact-operating linkage 9g is disposed inside the metal housing 11, as shown in FIG. 3.
  • This contact-operating linkage comprises a verticallymovable actuating rod 92 that is biased in an upward contact-opening direction by a heavy compression spring 93 at the top of housing 11 (FIG. 3).
  • a heavy compression spring 93 at the top of housing 11 (FIG. 3).
  • this actuating rod 92 is held in its depressed position shown in FIG. 3 by a trip latch 94 that acts on a latch roller 95 connected to the actuating rod 92.
  • this trip latch 94 is released, the opening spring 93 is free to expand, thereby driving the actuating rod 92 in an upward opening direction.
  • four bell cranks 100 are provided for transmitting this upward opening movement of actuating rod 92 to the movable contact rods 38 of the individual interrupters.
  • Each bell crank 100 is respectively coupled to the movable contact rods 38 of the four interrupters; and all the bell cranks are coupled to the common actuating rod 92.
  • Each bell crank 100 is connected to the actuating rod 92 through a link 102 that is pivotally connected at one end to the bell crank and is pivotally connected at its other end to the actuating rod.
  • the pivots at the respective ends of the link 102 are designated 104 and 106.
  • Each bell crank 100 is mounted for pivotal movement about a stationary pivot 108 carried by a suitable bracket on the metal housing 11.
  • the coupling between the bell crank 100 and the movable contact rod 38 is through a pivot 109 that is slidably mounted on a drive rod 110 connected to the movable contact rod.
  • the drive rods 110' are directly connected to the movable contact rods 38 of the upper interrupters 22 and 22a. But for each of the lower interrupters 21 and 21a, there is an insulating intermediate rod 111 disposed between the movable contact rod 38 and its drive rod 110. Each of these insulating intermediate rods 111 is rigidly connected to the movable contact rod 3 8 and extends through one of the hollow supporting insulators 44 into the interior of metal housing 11.
  • FIG. 4 illustrates the interrupters and their operating linkage at the end of an opening operation.
  • a suitable dashpot schematically shown at 113 is provided at the top of housing 12 adjacent the opening spring 39.
  • the dashpot comprises a movable plunger 114, the upward movement of which is opposed by liquid in the dashpot.
  • the plunger 114 is engaged by a cap 116 on the actuating rod 92 after the rod 92 has moved through a predetermined portion of the opening stroke, and thereafter retards further upward movement of actuating rod 92.
  • Closing of the circuit breaker is elfected by driving the vertically-extending common actuating rod 92 in a downward direction from its open position of FIG. 4.
  • the force for such a closing opera-tion is derived from a suitable operating mechanism (not shown) coupled to the lower end of common actuating rod 92.
  • Such downward closing motion of the actuating rod 92 pivots the right-hand bell cranks in a counterclockwise direction and the lefthand bell cranks in a clockwise direction.
  • Each of these bell cranks acts through its associated wipe spring to drive the movable contact rod 38 in a closing direction.
  • each bell crank 100 is provided between each bell crank 100 and its associated link 102.
  • Each of these adjusting means preferably comprises an eccentric portion on pivot 104 that fits in the pivot-receiving opening of link 102.
  • the eccentric portion can be rotatably adjusted with respect to the remainder of the pivot 104 to provide for slight changes in the angular position of the bell crank 100 without changing the position of link 102.
  • the downward closing force exerted on the actuating rod 92 in addition to closing the interrupters, recharges the opening spring 93, thereby preparing it for another opening operation.
  • the trip latch 94 moves into its latching position behind the latch roller 95, thereby latching the circuit breaker in its closed position.
  • the latching mechanism 94, 95 can be of any suitable conventional type and is therefore shown in schematic form only. In the illustrated embodiment, it comprises a latch member 94 that is pivotally mounted on a stationary pivot 120 and a reset spring 121 that biases the latch member toward its latched position.
  • a long insulating rod 24 coupled to the latch member 94 is provided.
  • the latch member 94 is pivoted clockwise about pivot 120 to release the latch roller 95 and permit the opening spring 93 to drive the actuating rod 92 upwardly.
  • the latch-actuating rod 124 extends through the hollow insulator 12 and is adapted to receive a tripping signal at its lower end.
  • one of the objects of my invention has been to arrange the interrupters in such a manner that inexpensive insulating enclosures of relatively small diameter can be used for enclosing the interrupting units and the operating rods.
  • I have been able to achieve this objective, partially because none of the insulating enclosures 60, 60a, 70, 70a, 44, 44a is required to accommodate both an interrupter and operating rods located outside the periphery of the interrupter.
  • the insulating enclosures 60, 60a, 70, and 70a are called upon merely to enclose the interrupters.
  • the enclosures 44 and 44a are called upon merely to enclose the operating rods 111 and no interrupters.
  • the only ones of the porcelain enclosures that carry appreciable bending loads are the enclosures 44 and 44a. I am able to provide internally located reinforcing rods 47 for these particular enclosures without requiring a large diameter porcelain to accommodate these rods because there are no interrupters inside these particular insulators. With only the operating rods 111 extending therethrough, there is ample space in a small diameter enclosure 44 or 44a to accommodate the reinforcing rods 47 and certain other structure (soon to be described).
  • each capacitor For distributing the total voltage approximately equally between the individual breaks of a multi-break interrupter, it is conventional to provide capacitors of suitable values in parallel with the breaks. These capacitors can be of any suitable conventional design, but I prefer to construct each capacitor as an assembly of stacked ceramic elements, as shown and claimed in application S.N. 323,414,
  • the capacitor assembly shunting the lower interrupter 21 is located in a tubular enclosure 130, preferably of porcelain. This enclosure is attached by suitable brackets 131 and 132 at its opposite ends to the end plates 62 and 72 of the enclosures 60 and 70. These brackets 131, 132 also serve :as conductors which electrically connect the capacitor assembly at its opposite ends to the plates 62 and 72, thereby connecting it in parallel with interrupter 21.
  • the capacitor assembly shunting the upper interrupter 22 is mounted inside the porcelain enclosure 44.
  • This capacitor assembly which is shown schematically at 135, comprises terminal conductors 136 and 137.
  • Terminal conductor 136 is electrically and mechanically connected to end plate 50, and terminal conductor 137 is electrically and mechanically connected to the adjacent wall of housing 11. Because there is no interrupter located inside the enclosure 44, there is ample room available for the capacitor assembly 135437. Locating the capacitor assembly 135437 inside the enclosure 44 eliminates the need for :a separate weatherproof enclosure, such as 130, for this capacitor assembly.
  • the capacitor assemb ies on the left hand side of the metal housing 12 are mounted and are electrically connected in the power circuit in substantially the same manner as those, described hereinabove, on the right hand side of metal housing 12.
  • the same reference numerals are used for corresponding capacitor parts at the two sides of the metal housing except the suffix a is attached to those at the left hand side. Since the capacitors at the left hand side of the metal housing 12 are substantially the same as those at the right hand side of the metal housing, it will be apparent that when the circuit breaker is open the metal housing is at substantially a mid-potential with respect to the terminals of the circuit breaker.
  • my circuit breaker is constructed from identical modules assembled together in a building block type of construction.
  • the overall assembly of interrupters at the right hand side of the metal housing 11 is identical to the overall assembly of interrupters at the left-hand side of the metal housing;
  • the four vacuum interrupters 21, 22, 21a and 22a are identical;
  • the or enclosures 60, 70, 70a and 60a are identical;
  • each of the subassemblies that comprises an enclosure, such as 60, and a vacuum interrupter, such as 21, mounted therein is identical; and each of the supporting subassemblies 44, 47 and 44a, 47a is identical.
  • the use of such identical modules facilitates construction of and assembly of the modules by high speed assembly line techniques.
  • Each module has a predetermined volt-age rating; and within certain practical limits, from these modules a circuit breaker having a voltage rating of any desired value can be built up.
  • the voltage rating of the built-up breaker will be equal to the number of modules multiplied by the voltage rating of each module. For example, if a breaker having a voltage rating of half that depicted in FIG. 1 is desired, the modules at one side of the circuit breaker housing 11 can be omitted. Or if a breaker with a higher voltage rating is desired, one or more additional modules, each comprising an enclosure such :as 60 and a vacuum interrupter such as 21 can be provided. As shown in FIG.
  • these additional modules can be mounted beneath the lower assembly 44, 60 in a horizontally extending row comprising two insulators 44c, each identical to the insulator 44 of FIG. 1. It will, of course, be necessary to provide a taller housing 11 and suitable bell cranks inside it to provide for operation of interrupter 60c simultaneously with the other interrupters.
  • the individual interrupters of my circuit breaker assembly can be readily inspected and replaced, if necessary, without disturbing the remaining interrupting units.
  • a pair of covered openings are provided in the metal housing 11.
  • the removable covers for these openings are shown at 141 and 142 in FIG. 1.
  • Suitable inspection holes 143 covered by a transparent material, such as shatter-proof glass, are provided in the covers. These inspection holes line up with the wipe mechanisms 109-112; and through these inspection holes 143, the wipe present in any one of the interrupters can be easily determined. If any adjustment is necessary, the cover 141 or 142 can be removed, and the adjusment made by suitably adjusting the corresponding stop 112.
  • the cover 141 on housing 11 is removed and the associated bell crank is suitably disconnected from its contact rod by removing the stop nut 112. Then, the nuts on studs 56 are removed, and'the interrupter is withdrawn from its enclosure 70th'rough-the outer end of the enclosure, after the cover plate 72 has been suitably removed. If. it is desired to replace either of the lower interrupters 21, the cover 54 on the intermediate casing 53 is first removed. Through the opening in casing 53, the insulating operating rod 111 is disconnected from contact rod 38. Thereafter, the nuts on studs 56 of the interrupter are removed, and the interrupter can then be withdrawn from its enclosure 60 or 60a through the opposite end of the enclosure. It will be apparent that removal of any one of these interrupters can be effected without disturbing the other interrupters. Similarly, the removed interrupter can be replaced with another interrupter without disturbing the remaining interrupters.
  • a high voltage electric circuit breaker comprising:
  • said actuating member is movable in a generally vertical direction
  • said operating rods are movable in a generally horizontal direction to operate said interrupters
  • said means for producing substantially simultaneous operation of said operating rods comprises coupling means connected between said verticallymovable actuating member and said operating rods for converting the generally vertical movement of said actuating member into generally horizontal movement of said operating rods.
  • a high voltage electric circuit breaker comprising:
  • (0) means for mounting the capacitor that is in parallel with the third interrupter inside the hollow insulator that mounts said fourth interrupter.
  • circuit interrupters are vacuum-type interrupters, each comprising a highly evacuated envelope and a pair of relatively movable contacts located inside said envelope, one of said contacts being connected to an associated one of said operating rods.
  • each of said interrupters comprises an envelope having a pair of opposed ends, one of which faces said metal housing and the other of which faces in a generally opposite direction,
  • interrupter supporting means is provided for supporting each of said interrupters at the end of said envelope facing said metal housing
  • aocess openings are provided in said circuit breaker adjacent said internupter supporting means for permitting disassem'bly of said supporting means

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Breakers (AREA)
US499205A 1965-10-21 1965-10-21 High-voltage electric circuit breaker Expired - Lifetime US3418439A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US499205A US3418439A (en) 1965-10-21 1965-10-21 High-voltage electric circuit breaker
GB40560/66A GB1131520A (en) 1965-10-21 1966-09-12 Improvements in high voltage electric circuit breakers
JP6536666A JPS4321211B1 (enrdf_load_stackoverflow) 1965-10-21 1966-10-04
ES0332238A ES332238A1 (es) 1965-10-21 1966-10-14 Un dispositivo interruptor automatico para alta tension.
FR80791A FR1499529A (fr) 1965-10-21 1966-10-20 Interrupteur à haute tension
CH1518966A CH448214A (de) 1965-10-21 1966-10-20 Hochspannungsschalter
DE1966G0048247 DE1640182A1 (de) 1965-10-21 1966-10-21 Hochspannungsschalter mit einer Mehrzahl von Unterbrechereinheiten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US499205A US3418439A (en) 1965-10-21 1965-10-21 High-voltage electric circuit breaker

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US3418439A true US3418439A (en) 1968-12-24

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Application Number Title Priority Date Filing Date
US499205A Expired - Lifetime US3418439A (en) 1965-10-21 1965-10-21 High-voltage electric circuit breaker

Country Status (7)

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US (1) US3418439A (enrdf_load_stackoverflow)
JP (1) JPS4321211B1 (enrdf_load_stackoverflow)
CH (1) CH448214A (enrdf_load_stackoverflow)
DE (1) DE1640182A1 (enrdf_load_stackoverflow)
ES (1) ES332238A1 (enrdf_load_stackoverflow)
FR (1) FR1499529A (enrdf_load_stackoverflow)
GB (1) GB1131520A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3527910A (en) * 1968-04-25 1970-09-08 Gen Electric Polyphase vacuum type circuit breaker
US3527911A (en) * 1968-07-22 1970-09-08 Gen Electric Mounting arrangement for a vacuum circuit interrupter
US3566054A (en) * 1968-02-13 1971-02-23 Gen Electric High voltage circuit breaker comprising a mechanical linkage interconnecting its components for synchronized operation thereof
US3576961A (en) * 1968-08-02 1971-05-04 Turner Electric Corp Vacuum switch with operating means for arresting contact in an intermediate position before complete opening
US3582587A (en) * 1969-02-03 1971-06-01 Gen Electric Vacuum-type circuit interrupter having a stroke length dependent upon current magnitude
US3594525A (en) * 1969-04-21 1971-07-20 Gen Electric Common parallel operating means for series-connected, laterally offset vacuum switches
US3671907A (en) * 1970-11-23 1972-06-20 Allis Chalmers Mfg Co Vacuum switch with power fuse
US3728508A (en) * 1971-10-26 1973-04-17 Ite Imperial Corp Operating mechanism for vacuum circuit breaker including contact pressure springs
US3935407A (en) * 1973-09-25 1976-01-27 Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. Multiphase vacuum switch assembly having cam operated spring charging drive mechanism with lost motion connection
US20150206683A1 (en) * 2013-09-10 2015-07-23 Kabushiki Kaisha Toshiba Switchgear

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FR2447090A1 (fr) * 1979-01-16 1980-08-14 Hitachi Ltd Disposition et commande d'un disjoncteur haute tension blinde a gaz isolant
FR2713392B1 (fr) * 1993-11-30 1996-01-05 Gec Alsthom T & D Sa Mécanisme de manÓoeuvre d'un pôle de disjoncteur à deux chambres de coupure en T ou en V et procédé de montage de ce mécanisme.
CN101162659A (zh) * 2006-10-13 2008-04-16 Abb技术有限公司 用于电力系统中的开关设备
EP2856487B1 (en) * 2012-05-31 2016-06-29 ABB Technology AG High-voltage switch with multiple metal enclosures

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Publication number Priority date Publication date Assignee Title
DE1152740B (de) * 1961-07-11 1963-08-14 Liebknecht Transformat Hochspannungsdruckgasschalter
US3123698A (en) * 1961-02-10 1964-03-03 Circuit breakers having interrupting contacts
US3214557A (en) * 1963-02-11 1965-10-26 Allis Chalmers Mfg Co Motion translating means
US3352988A (en) * 1965-04-09 1967-11-14 Allis Chalmers Mfg Co Means for mounting and electrically interconnecting circuit interrupting devices

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Publication number Priority date Publication date Assignee Title
US3123698A (en) * 1961-02-10 1964-03-03 Circuit breakers having interrupting contacts
DE1152740B (de) * 1961-07-11 1963-08-14 Liebknecht Transformat Hochspannungsdruckgasschalter
US3214557A (en) * 1963-02-11 1965-10-26 Allis Chalmers Mfg Co Motion translating means
US3352988A (en) * 1965-04-09 1967-11-14 Allis Chalmers Mfg Co Means for mounting and electrically interconnecting circuit interrupting devices

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566054A (en) * 1968-02-13 1971-02-23 Gen Electric High voltage circuit breaker comprising a mechanical linkage interconnecting its components for synchronized operation thereof
US3527910A (en) * 1968-04-25 1970-09-08 Gen Electric Polyphase vacuum type circuit breaker
US3527911A (en) * 1968-07-22 1970-09-08 Gen Electric Mounting arrangement for a vacuum circuit interrupter
US3576961A (en) * 1968-08-02 1971-05-04 Turner Electric Corp Vacuum switch with operating means for arresting contact in an intermediate position before complete opening
US3582587A (en) * 1969-02-03 1971-06-01 Gen Electric Vacuum-type circuit interrupter having a stroke length dependent upon current magnitude
US3594525A (en) * 1969-04-21 1971-07-20 Gen Electric Common parallel operating means for series-connected, laterally offset vacuum switches
US3671907A (en) * 1970-11-23 1972-06-20 Allis Chalmers Mfg Co Vacuum switch with power fuse
US3728508A (en) * 1971-10-26 1973-04-17 Ite Imperial Corp Operating mechanism for vacuum circuit breaker including contact pressure springs
US3935407A (en) * 1973-09-25 1976-01-27 Maschinenfabrik Reinhausen Gebruder Scheubeck K.G. Multiphase vacuum switch assembly having cam operated spring charging drive mechanism with lost motion connection
US20150206683A1 (en) * 2013-09-10 2015-07-23 Kabushiki Kaisha Toshiba Switchgear
CN105474343A (zh) * 2013-09-10 2016-04-06 株式会社东芝 开关器

Also Published As

Publication number Publication date
FR1499529A (fr) 1967-10-27
ES332238A1 (es) 1967-07-16
JPS4321211B1 (enrdf_load_stackoverflow) 1968-09-11
GB1131520A (en) 1968-10-23
DE1640182A1 (de) 1970-05-27
CH448214A (de) 1967-12-15

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