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US3379849A - Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank - Google Patents

Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank Download PDF

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Publication number
US3379849A
US3379849A US419044A US41904464A US3379849A US 3379849 A US3379849 A US 3379849A US 419044 A US419044 A US 419044A US 41904464 A US41904464 A US 41904464A US 3379849 A US3379849 A US 3379849A
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United States
Prior art keywords
tank
gas
piston
breaker
valve
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Expired - Lifetime
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US419044A
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English (en)
Inventor
Gilbert J Easley
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Westinghouse Electric Corp
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Westinghouse Electric Corp
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Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US419044A priority Critical patent/US3379849A/en
Priority to DE1590997A priority patent/DE1590997B2/de
Priority to AT939665A priority patent/AT256239B/de
Priority to GB50323/65A priority patent/GB1081080A/en
Priority to BE673742A priority patent/BE673742A/xx
Priority to CH1734565A priority patent/CH441471A/de
Application granted granted Critical
Publication of US3379849A publication Critical patent/US3379849A/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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Definitions

  • An interrupting unit is mounted within a main tank filled with an arc-extinguishing gas at relatively low pressure, such as sulfur hexafluoride (SP gas.
  • An operating cylinder and reciprocating piston are also mounted within the tank and effect contact separation within the interrupting unit.
  • a high-pressure reservoir containing the same arc-extinguishing gas, such as sulfur hexafluoride (SP gas at a higher pressure, is used to blast the established arc at the separated contact structure and also to effect opening and closing movement of the reciprocating piston.
  • An extension of the piston rod is latched in both the open and closed-circuit positions and also mechanical- 1y effects operation of the auxiliary switches.
  • the tank and the high-pressure rseervoir constitute a dual-pressure closed gaseous system for conserving and reusing the blasted (SP gas.
  • This invention relates, generally, to circuit breakers and, more particularly, to circuit breakers in which a blast of high pressure gas is utilized to assist in interrupting the are drawn between separated contact members of an interrupting assembly mounted inside a breaker tank.
  • Prior high capacity gas-blast circuit breakers of the double pressure type have performed satisfactorily, but have the disadvantages of high cost, and high mass of moving parts which makes ultrahigh speed operation difficult to attain. Furthermore, the operating mechanisms of prior breakers have required seals around operating shafts capable of retaining gas inside the breaker tank at a relatively high pressure.
  • An object of this invention is to provide a dual pressure gas-blast circuit breaker in which gas in the main tank is maintained at a pressure sufficient only for required insulation between live parts, and live parts to ground.
  • Another object of the invention is to provide a circuit breaker which does not require an external operating mechanism and an air compressor.
  • a further object of the invention is to eliminate interpole linkages, cranks and shaft seals from a circuit breaker structure.
  • Still another object of the invention is to utilize a small reservoir of high pressure gas to operate the contact members of a circuit breaker directly, as well as to provide a gas blast for are interruption.
  • a still further object of the invention is to simplify the control apparatus and system for controlling the operation of a gas-blast circuit breaker.
  • an interrupting assembly including a high pressure reser- êt, an interrupting chamber, stationary contact fingers, a hollow movable contact member, an operating cylinder, and a double acting piston disposed inside the cylinder, is mounted inside a generally cylindrical main tank on the lower ends of two terminal bushings which extend through collars on the wall of the tank.
  • a high pressure storage 3,379,849 Patented Apr. 23, 1 968 ice tank is mounted outside the main tank and connected to the high pressure reservoir by an insulating tube.
  • the main tank contain sulfur hexafluoride, SP gas, at about 40 p.s.i.g. to provide suflicient insulation to ground and between open contacts.
  • the storage tank and the reservoir contain SF gas at about 230 p.s.i.g., which is maintained at this pressure by a compressor connected between the main tank and the storage tank, thus forming a closed system.
  • the movable contact is connected directly to the piston which is operated by gas from the high pressure reservoir and controlled by two pilot-operated valves disposed inside the main tank.
  • a pilot-operated blast valve also disposed inside the main tan-k, controls the flow of gas from the high pressure reservoir to the interrupting chamber. The operation of these three valves is controlled by magnet valves located externally of the main tank.
  • An auxiliary switch is operated by a double acting piston disposed inside a cylinder located externally of the main tank and connected to the high pressure reservoir through two plunger operated valves mounted inside the main tank.
  • the plungers are actuated by a rod on the piston which operates the movable contact member of the interrupter.
  • a spring-biased latch pin releasably engages the piston rod to hold the movable contact member in the fully closed or the fully open position.
  • FIGURE 1 is a diagrammatic view of a circuit breaker and control system embodying principal features of the invention
  • FIG. 2 is a diagrammatic view of a modified latching scheme for the circuit breaker, the contacts of the breaker being closed;
  • FIG. 3 is a view, similar to FIG. 2, the contacts being open;
  • FIG. 4 is a diagrammatic view of a modified circuit breaker having three pole units mounted in one tank;
  • FIG. 5 is a view, in plan, of the circuit breaker shown in FIG. 4;
  • FIG. 6 is a view, in plan, showing the structure for operating the movable contact members of the circuit breaker illustrated in FIG. 4, the contacts being open;
  • FIG. 7 is a view, partly in section and partly in end elevation of the breaker illustrated in FIG. 4, the section being taken through one of the terminal bushings;
  • FIG. 8 is a View, similar to FIG. 7, showing an alternate bushing and current transformer arrangement.
  • the circuit breaker shown therein comprises a generally cylindrical main tank 2, a high pressure storage tank 3 located underneath the main tank 2, a high pressure reservoir 4 disposed inside the main tank 2 and connected to the storage tank 3 by means of an insulating tube 5, and a compressor 6 connected between the main tank 2 and the storage tank 3.
  • the main tank 2 contains an interrupting gas, for example sulfur hexafluoride (SP gas, at a relatively low pressure, for example 40 p.s.i.g., to provide suflicient insulation to ground and between open contact members of the circuit interrupter.
  • SP gas sulfur hexafluoride
  • the storage tank 3 and the reservoir 4 contain SF gas at a relatively high pressure, for example 230 p.s.i.g.
  • the gas is maintained at the high pressure by means of the compressor 6 which, as previously explained, is connected between the low pressure main tank 2 "and the high pressure storage tank 3, thus forming a closed system.
  • the main tank 2 is provided with removable end covers 7 for access to the interior of the tank.
  • An interrupter assembly 8 is mounted inside the tank 2 on the lower ends of two terminal bushings 9, each one of which extends through a cylindrical collar 11 at the top of the tank 2.
  • the bushings 9 may be of a type well known in the art, each bushing having a flange 12 attached to an internal flange 13 on one of the collars 11.
  • a current transformer 14 may be mounted around each collar 11.
  • Each bushing 9 has a conductor 15 extending through the bushing.
  • a metal sleeve 16 may be mounted inside the collar 11 in the space between the collar and the bushing 9 to provide a potential tap 17 in a manner well known in the art.
  • the interrupting assembly 8 is of the single break type. If desired two or more breaks could be connected in series for each pole unit of the breaker. As shown in FIG. 1, only one pole unit is mounted in each tank 2.
  • the interrupting assembly 8 includes the high pressure reservoir 4, an interrupting chamber 21 attached to the reservoir 4, a cluster of contact finger members 22 and an arc horn 23 disposed inside the chamber 21 and also attached to the reservoir 4 which, in turn, is attached to the lower end of the conductor 15 in one of the terminal bushings 9.
  • a movable contact member 24, which engages the contact fingers 22 when in the closed position, is attached to a reciprocating piston 25 disposed in an operating cylinder 26 which is attached to the lower end of the conductor 15 in the other one of the terminal bushings 9.
  • the contact member 24 is preferably of a tubular type having vent openings 28 provided in the wall of the tubular portion of the contact member, as described in a copending application, Ser. No. 612,284, filed Oct. 7, 1960, by R. G. Colclaser and R. N. Yeckley and assigned to the Westinghouse Electric Corporation.
  • the interrupting chamber 21 is preferably composed of a suitable high temperature material, such as polytetrafluoroethylene.
  • the method of interruption is similar to that described in the aforesaid copending application. However, the method ofclosing, tripping, latching and operation of the blast valve is difierent, as will be described hereinafter.
  • the fiow of the interrupting gas from the high pressure reservoir 4 into the interrupting chamber 21 is controlled by a blast valve A.
  • the valve A is a standard, two-way, pressure operated valve, which is controlled by a magnetic pilot valve A located in a control cabinet 29.
  • the pilot valve A admits gas from the high pressure storage tank 3 to the operating cylinder of the blast valve A through a small insulating tube 31.
  • valves B and C which are standard, pressure operated, three-way valves. When deenergized, each valve connects its end of the operating cylinder to the low pressure tank and shuts oif the gas from the high pressure reservoir 4.
  • valves B and C which are standard, pressure operated, three-way valves. When deenergized, each valve connects its end of the operating cylinder to the low pressure tank and shuts oif the gas from the high pressure reservoir 4.
  • the corresponding magnetic pilot valve B or C in the control cabinet for either valve is energized, high pressure gas is admitted through a small insulating tube 32 or 33 to the operating cylinder for the corresponding main valve B or C.
  • Operating either main valve admits gas from the high pressure reservoir 4 through an insulating tube 34 to its end of the operating cylinder and at the same time shuts oil? the connection to the low pressure tank 2.
  • the contact member 24, the piston 25 and a piston rod 35 are attached together to move as a unit when the breaker is operated.
  • the piston rod 35 is rather large in diameter. The purpose of this is to reduce the effective piston area for closing the contact members, since the force required to close the contact members is considerably less than that required to open the contact members quickly.
  • the closing speed may be controlled further by providing a throttle 36, which is so located that it controls the flow of high pressure gas into one end of the cylinder 26, but does not restrict the flow of gas out of the cylinder. This is important in order to obtain a fast exhaust on a close-open operation.
  • the opening into the righthand end of the cylinder 26 is so located that the piston closes off the gas escape passage as the piston reaches the open position of the contact members of the breaker.
  • a cushioning effect is obtained at the end of the opening stroke of the breaker.
  • a spring-biased latch pin 37 drops into one of the two depressions 38 or 39 in the piston rod 35.
  • the magnetic force tending to open the contacts even when very high fault currents are flowing is relatively low for the current loop shown, in the order of 50-100 pounds. Therefore, the restraining force of the spring biased latch pin in a depression need not be very great, and is easily overcome when high pressure gas is admitted to the operating cylinder to move the piston. The need for an open position restraining force is not as great, but is considered desirable to control rebound.
  • FIGS. 2 and 3 A pivoted latch member 41 is biased by a spring 42 to engage a projection 43 on the piston rod 35, when the contact members of the breaker are closed.
  • a piston 44 is disposed inside a latch release cylinder 45, which is connected through a pipe 46 to the main control valve B which admits high pressure gas into the operating cylinder 26.
  • gas is also admitted to the cylinder 45, thereby causing a piston rod 47 on the piston 44 to engage the latch member 41 to release the latch. Since the volume of the latch release cylinder is much smaller than the main operating cylinder 26, the latch will release before the pressure built up in the operating cylinder 26 is able to produce a high latch load.
  • FIGURE 3 the operating piston 25 and the latch 41 are shown in the open position with the valve B still energized to maintain pressure in the latch release cylinder 45.
  • the valve B When the valve B is deenergized, pressure is released from the cylinder 45 and the latch spring 42 will drive the piston 44 toward the right in the cylinder 45, and the latch 41 Will be returned to a position in which it will engage the projection 43 on the piston rod 35 when the contact members of the circuit breaker are closed.
  • two three-way valves D and E are provided to control the admission of gas from the high pressure reservoir 4 to an auxiliary switch operating cylinder 51 containing a piston 52 for actuating the contact members of the auxiliary switch.
  • the valves D and E are plunger operated valves actuated by a rounded projection 53 on the piston rod 35.
  • the valve D is connected through a small insulating tube 54 to one end of the cylinder 51 and the valve E is connected through an insulating tube 55 to the other end of the cylinder 51, which is located in the control cabinet 29.
  • auxiliary switch and one set of valves D and B will ordinarily be sufiicient for a three-pole breaker, but an individual switch and set of valves per pole may be used if single pole operation is desired.
  • the control cabinet 29 is utilized to house the gas compressor 6 and its controls, the magnetic pilot valves A, B and C, the auxiliary switch and its operating cylinder 51, and anti-pump relays X-Y, which control the magnetic pilot C of the three-way closing valve C.
  • One set of magnetic pilot valves A, B and C could be used to operate all three poles, but it may be found desirable to use three sets of pilot valves in order to keep pilot tubes short and of equal length. Of course, three sets of magnetic pilot valves would be required if single pole breaker operation is desired.
  • the magnetic pilot valves are all three-way valves so that high pressure gas is exhausted rapidly from the pilot tubes to the low pressure tank when the pilots are deenergized. This is especially important on close-open operations, and also to limit the amount of high pressure gas passed through the blast valve during an interruption.
  • the electrical control for the circuit breaker is a conventional, anti-pump, X-Y scheme which controls the operation of the magnetic pilot valve C for the main closing valves C.
  • the magnetic pilots for the blast valve A and the opening valve B are connected in parallel, so that their operation is initiated simultaneously when the breaker is tri ped by either a control switch CST or a protective relay PR.
  • contacts LPC in the X coil circuit open to prevent the breaker from closing.
  • the closing operation of the circuit breaker may be understood by referring to the control circuit shown in the drawing.
  • the X relay is energized which, in turn, energizes the magnetic pilot valve C.
  • High pressure gas is admitted through the pilot tube 33 to operate three- Way valve C; this closes off the low pressure tank connection to the right-hand side of piston 25, and at the same time admits high pressure gas from the high pressure reservoir 4. Since the left-hand side of piston remains open to low tank pressure, the unbalanced force on piston 25 will overcome the latch pin and move the piston to the left to close the contact members of the breaker.
  • a close-open operation is obviously a combination of a closing operation followed immediately by an opening operation.
  • the only difference here is that the high pressure gas on the right-hand side of piston 25 must be exhausted quickly in order not to interfere with the contact opening speed. This is accomplished by using threeway valves for pilot valve C as well as main valve C. This exhausts high pressure gas in the pilot tube quickly for fast operation of main valve C which, in turn, exhausts high pressure gas from the right-hand side of piston 25 quickly.
  • the main valve C is deenergized automatically at the end of the closing stroke as previously described. It will be noted that the throttle 36 for controlling the closing speed is so positioned that it does not affect the high pressure gas exhaust from the operating cylinder.
  • the operating scheme is basically the same as that hereinbefore described in which the high pressure gas is used to operate the breaker contacts directly instead of by means of an external operating mechanism and linkages.
  • the blast valve A, the opening valve B and the closing valve C are cont olled by magnetic pilot valves A, B and C, respectively, in the manner herein-before described.
  • auxiliary switch valves D and E are operated in the manner previously described.
  • a single operating cylinder 26 and a single set of valves are utilized in this case to operate all three poles of the breaker.
  • valves A and B are at ground potential, thereby making it unnecessary to insulate the pilot tubes for these valves.
  • the valves are located inside the main tank 2. However, the valves may be located outside the tank so that the main valves and pilot valves could by physically combined. There is a further possibility of combining valves A and B, since they are controlled by the same electrical circuit.
  • a pair of bushings 9' is provided for each pole unit of the circuit breaker.
  • the inner ends of the bushings are aligned longitudinally of the tank 2, and the outer ends are tilted transversely of the tank as shown in FIG. 5.
  • sufiicient space is provided for the bushing current transformers 14.
  • more than enough electrical spacing is provided between the external terminals of the bushing. Locating the bushings in line may give the impression of creating a rather long breaker, but such is not the case; a check on dimensions to get the required spacings and creepage distances between poles shows that this breaker is about -25 percent shorter than comparable three-tank oil breakers.
  • the interrupting chamber 21, the stationary contact members 22 and the arc horn 23 for each pole unit are mounted on the inner end of the terminal conductor 15 in one of the bushings 9 of each pair of bushings.
  • Collector fingers 27' are mounted on the inner end of the terminal conductor 15 in the other one of each pair of bushings.
  • the main guiding and supporting of the movable contact member 24' for each pole unit is provided by a hole through the base of the collector fingers 27. Additional guiding is obtained by means of the collector finger tips.
  • the movable contact members 24' for all three pole units are operated by two spaced insulated rods 61 which are joined by cross members 62, one of which is attached to each one of the movable contact members 24.
  • a cross member 62 at the right-hand end of the rods 61 is attached to the piston 25 in the operating cylinder 26 by means of a rod 63, which is attached to the member 62 by means of a clevis 64.
  • the contact members for all three pole units are operated simultaneously by the piston 25.
  • FIG. 7 of the drawing shows an end view of the breaker and a cross section through one of the bushings 9'.
  • the general location of the high pressure tank 3' and the control cabinet 29 is shown. Since the main breaker tank 2 must be mounted high enough to provide electrical code clearance between external live parts and the ground level, there is plenty of space underneath the main tank for the high pressure tank and the control cabinet.
  • the gas bushing 9' shown is in general similar to prior bushings utilized on SP breakers. However, the bushing is not handled as a unit, but is assembled in the breaker with separate upper and lower porcelains 65 and 66, respectively, which are held in position by the conductor stud 15. The bushings 65 and 66 are drawn against an internal flange 13 at the top of the collar 11' with suitable gaskets 67 and 68 disposed between the porcelains 65 and 66, respectively. Omission of flange bolts permits the use of smaller diameter current transformers.
  • the present bushing differs from the prior bushings in that a solid stud conductor is used, and the gas connection to the interior of the bushing is through a small hole 69 in the flange 13'.
  • a small filter may be provided to keep out solid are products, such as powder.
  • encapsulated current transformers 14 are mounted around the tank collar instead of an extension of the upper porcelain.
  • the tall metal collar 11 is required anyway with the horizontal tank construction.
  • FIG. 8 Another alternate arrangement for the current transformers and bushings is shown in FIG. 8.
  • indoor type current transformers are mounted inside the tank collar 11' on a support 71 attached to the inside of the collar 11'.
  • Secondary leads 72 are brought out through suitable seals in a connecting member 73 on the collar 16.
  • the bushing shown is of the condenser type in order to obtain the smallest possible diameter for the current transformers 14.
  • No porcelain is required on the lower end of the bushing, and the interior of the upper porcelain 65 is filled with SP gas through a small filtered opening 69' in the flange 13' attached to the top of the collar 11.
  • the bushing flange forms the top cover for the current transformer pocket.
  • the tank collar 11' must be taller in order to mount the current transformers 14 around the ground sleeve 74- of the condenser bushing, the collar is not much larger in diameter, due to the small diameter of the condenser bushing.
  • this arrangement has the advantage of a natural fiashover path across the ouside porcelain to ground around the outside of the current transformer which is desired for differential relaying schemes. This eliminates the need for an electrode gap 75 required in the arrangement shown in FIG. 7.
  • Breaker does not slowly change position when gas pressure is lost.
  • circuit breaker shown in FIGS. 4, 5 and 6 has the following additional advantages:
  • Low gas pressure in breaker tank may eliminate ASME boiler code inspection, thereby lowering the tank cost.
  • a main tank containing an interrupting gas at a relatively low pressure yet having a higher dielectric strength than air at atmospheric pressure, a reservoir containing the same kind of gas at a relatively high pressure, an interrupting chamber mounted inside the main tank, a stationary contact member disposed inside the interrupting chamber, a movable contact member engaging the stationary contact member, an operating cylinder mounted inside the main tank, a reciprocating piston having a piston-rod extension disposed in the cylinder and connected to the movable contact member, valve means for controlling the flow of gas from the high pressure reservoir into opposite ends of the cylinder to operate the piston to open and close the contact members in the interrupting chamber, a blast valve for controlling the flow of a high-pressure blast of gas into the interrupting chamber, auxiliary switch means for controlling the operation of the valve means and the blast valve, control valves (D, E) disposed immediately adjacent the operating cylinder
  • a multi-pole dual-pressure gas-blast type of circuit breaker employing a substantially closed gaseous system for conserving and reusing the blasted gas, comprising a generally cylindrical elongated main tank containing an interrupting gas at a relatively low pressure yet having a higher dielectric strength than air at atmospheric pressure, a reservoir containing the same kind of gas at a relatively high pressure, a pair of terminal bushings extending through the elongated tank for each pole, said bushings being spaced longitudinally of the tank and tilted in opposite directions transversely of the tank, an interrupter mounted inside the tank for each pole, each interrupter including an interrupting chamber supported by one terminal bushing, a stationary contact member disposed inside each chamber and a movable contact member slidably supported by an adjacent bushing, elongated insulating means movable longitudinally and connecting the movable contact members together, a single operating cylinder mounted inside the tank, a reciprocating piston disposed inside the cylinder and attached to said longitudinally movable insulating means,
  • a multi-pole dual-pressure gas-blast type of circuit breaker employing a substantially closed gaseous system for conserving and reusing the blasted gas, comprising a generally cylindrical elongated main tank containing an interrupting gas at a relatively low pressure yet having a higher dielectric strength than air at atmospheric pressure, a reservoir containing the same kind of gas at a relatively high pressure, a pair of terminal bushings extending through the elongated tank for each pole, said bushings being spaced longitudinally of the tank and tilted in opposite directions transversely of the tank, the inner ends of said bushings being aligned longitudinally of the tank, an interrupting chamber and a stationary contact member therein mounted on the inner end of one of each pair of bushings, a movable contact member slidably mounted on the inner end of the other one of each pair of bushings, elongated insulating means movable longitudinally and connecting the movable contact members together, a single operating cylinder mounted inside the tank, a reciprocating piston disposed

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  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
US419044A 1964-12-17 1964-12-17 Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank Expired - Lifetime US3379849A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US419044A US3379849A (en) 1964-12-17 1964-12-17 Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank
DE1590997A DE1590997B2 (de) 1964-12-17 1965-09-10 Druckgasschalter
AT939665A AT256239B (de) 1964-12-17 1965-10-18 Druckgasschalter
GB50323/65A GB1081080A (en) 1964-12-17 1965-11-26 Gas-blast circuit breaker
BE673742A BE673742A (de) 1964-12-17 1965-12-14
CH1734565A CH441471A (de) 1964-12-17 1965-12-15 Druckgasschalter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US419044A US3379849A (en) 1964-12-17 1964-12-17 Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank

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US3379849A true US3379849A (en) 1968-04-23

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US419044A Expired - Lifetime US3379849A (en) 1964-12-17 1964-12-17 Dual-pressure gas-blast circuit breaker with piston means and interrupting unit in closed tank

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US (1) US3379849A (de)
AT (1) AT256239B (de)
BE (1) BE673742A (de)
CH (1) CH441471A (de)
DE (1) DE1590997B2 (de)
GB (1) GB1081080A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663780A1 (fr) * 1990-06-26 1991-12-27 Merlin Gerin Disjoncteur haute tension a isolement gazeux et a mecanisme de commande pneumatique.
AU648601B2 (en) * 1991-11-01 1994-04-28 Schneider Electric Sa High-voltage circuit breaker with gas insulation and pneumatic operating mechanism
EP1930928A3 (de) * 2006-12-07 2009-09-23 ABB Technology AG Kontaktantriebsanordnung
EP2648202A1 (de) 2012-04-05 2013-10-09 ABB Technology AG Schutzschalter
CN114019362A (zh) * 2021-11-04 2022-02-08 华北电力大学 一种基于继电保护测试仪的复合故障实时仿真系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077761U (de) * 1974-05-02 1975-07-05
JPS6110407Y2 (de) * 1978-01-06 1986-04-03

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Publication number Priority date Publication date Assignee Title
DE533574C (de) * 1929-08-17 1931-09-16 Aeg Aus Einzelschaltern zusammengesetzter ein- oder mehrphasiger, durch Pressluft betaetigter Schalter, bei dem die Kontakte beim Schalten zur Unterdrueckung von Lichtboegen mit Pressluft beblasen werden
DE646847C (de) * 1934-02-08 1937-06-23 Elektrowerke Akt Ges Elektrischer Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
GB517622A (en) * 1938-08-02 1940-02-05 Reyrolle A & Co Ltd Improvements in or relating to electric circuit-breakers having arc-control devices
FR1304411A (fr) * 1960-10-26 1962-09-21 Brown Limiteur de courant de court-circuit
US3163737A (en) * 1960-03-23 1964-12-29 English Electric Co Ltd Gas blast circuit breaker and operating means therefor
US3214542A (en) * 1961-04-11 1965-10-26 Westinghouse Electric Corp Circuit interrupters with pressurized interrupting assemblage and synchronized disconnecting means
US3246108A (en) * 1961-02-15 1966-04-12 Westinghouse Electric Corp Arc-extinguishing structure and tank housing for a compressed-gas circuit interrupter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE533574C (de) * 1929-08-17 1931-09-16 Aeg Aus Einzelschaltern zusammengesetzter ein- oder mehrphasiger, durch Pressluft betaetigter Schalter, bei dem die Kontakte beim Schalten zur Unterdrueckung von Lichtboegen mit Pressluft beblasen werden
DE646847C (de) * 1934-02-08 1937-06-23 Elektrowerke Akt Ges Elektrischer Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
GB517622A (en) * 1938-08-02 1940-02-05 Reyrolle A & Co Ltd Improvements in or relating to electric circuit-breakers having arc-control devices
US3163737A (en) * 1960-03-23 1964-12-29 English Electric Co Ltd Gas blast circuit breaker and operating means therefor
FR1304411A (fr) * 1960-10-26 1962-09-21 Brown Limiteur de courant de court-circuit
US3246108A (en) * 1961-02-15 1966-04-12 Westinghouse Electric Corp Arc-extinguishing structure and tank housing for a compressed-gas circuit interrupter
US3214542A (en) * 1961-04-11 1965-10-26 Westinghouse Electric Corp Circuit interrupters with pressurized interrupting assemblage and synchronized disconnecting means

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663780A1 (fr) * 1990-06-26 1991-12-27 Merlin Gerin Disjoncteur haute tension a isolement gazeux et a mecanisme de commande pneumatique.
EP0465377A1 (de) * 1990-06-26 1992-01-08 Schneider Electric Sa Hochspannungsleistungsschalter mit Isoliergas und pneumatischem Steuermechanismus
US5187339A (en) * 1990-06-26 1993-02-16 Merlin Gerin Gas insulated high-voltage circuit breaker with pneumatic operating mechanism
AU648601B2 (en) * 1991-11-01 1994-04-28 Schneider Electric Sa High-voltage circuit breaker with gas insulation and pneumatic operating mechanism
EP1930928A3 (de) * 2006-12-07 2009-09-23 ABB Technology AG Kontaktantriebsanordnung
CN101226845B (zh) * 2006-12-07 2012-08-08 Abb技术有限公司 触头驱动装置
EP2648202A1 (de) 2012-04-05 2013-10-09 ABB Technology AG Schutzschalter
CN103367027A (zh) * 2012-04-05 2013-10-23 Abb技术有限公司 断路器
CN114019362A (zh) * 2021-11-04 2022-02-08 华北电力大学 一种基于继电保护测试仪的复合故障实时仿真系统
CN114019362B (zh) * 2021-11-04 2024-04-19 华北电力大学 一种基于继电保护测试仪的复合故障实时仿真系统

Also Published As

Publication number Publication date
BE673742A (de) 1966-04-01
CH441471A (de) 1967-08-15
GB1081080A (en) 1967-08-31
DE1590997A1 (de) 1970-04-16
AT256239B (de) 1967-08-10
DE1590997B2 (de) 1975-01-23

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