EP0518837B1 - An arrangement in an SF6 insulated, high voltage on-load switch - Google Patents

An arrangement in an SF6 insulated, high voltage on-load switch Download PDF

Info

Publication number
EP0518837B1
EP0518837B1 EP92850135A EP92850135A EP0518837B1 EP 0518837 B1 EP0518837 B1 EP 0518837B1 EP 92850135 A EP92850135 A EP 92850135A EP 92850135 A EP92850135 A EP 92850135A EP 0518837 B1 EP0518837 B1 EP 0518837B1
Authority
EP
European Patent Office
Prior art keywords
switch
arrangement
angle
fan blades
revolving shaft
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
EP92850135A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0518837A1 (en
Inventor
Harald Dyngeseth
Jaap Daalder
Arne Morten Lund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Distribution AS
Original Assignee
ABB Distribution AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Distribution AS filed Critical ABB Distribution AS
Publication of EP0518837A1 publication Critical patent/EP0518837A1/en
Application granted granted Critical
Publication of EP0518837B1 publication Critical patent/EP0518837B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—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
    • H01H33/886—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 by movement of rotating pistons

Definitions

  • the present invention relates to an arrangement in an SF6 gas insulated electrical high voltage on-load switch, wherein the number of rotatable switch knives in the switch are arranged at evenly spaced intervals, projecting from a common revolving shaft.
  • the SF6 gas is also used as an extinguisher or arc-control means for the electric arc caused by switching.
  • German Offenlegungsschrift DE 3514853-A1 is described an extinguishing principle embodied in a compression chamber in which the SF6 gas is compressed and conducted to discharge through a form of nozzle surrounding the one fixed switch contact per phase. The gas thus flows along the side of the switch contacts and continues approximately along the switch arc.
  • the fan blades or vanes which rotate in the fan housing are arranged such that, together with a rotating disc having openings that cooperate with said nozzle openings in the fixed fan housing, an opening for the gas discharge is periodically established during the rotational movement of the switch knives and blowing fans.
  • This work is usually done by a manually operated spring mechanism. To achieve sufficient breaking speed the mechanism must have very powerful springs, which implies the disadvantage that the switch will be exceedingly heavy to operate manually.
  • the arrangement is characterized in that on each side of each of the aforementioned knives there is provided a fan blade which is freely rotatable, with the actual switch housing serving as the rotation chamber, and that said fan blades project from and are secured to said revolving shaft at an angle relative to the rotational axis of the revolving shaft, to create thereby, on rotation of the revolving shaft, turbulent gas flows around the switch contacts cooperating with the knife sets to extinguish the electric arcs thereabout.
  • each fan blade is displaced at a first angle after a respective switch knife in the switch knife set.
  • the angle is preferably between 20° and 45°.
  • At least two sets of fan blades each form a substantially V-shaped cross-section, wherein each branch of said V forms a second angle with the axis of rotation of the revolving shaft.
  • a pair of fan blades being adjacent to a switch knife In a switch knife set will be arranged such that the fan blades mutually form a third angle.
  • This third angle may be in the range of 90° - 150°.
  • the apex of the third angle will point in the direction of rotation for the revolving shaft.
  • the extinguishing principle according to the present invention is thus totally different from that of the devices according to the prior art.
  • the fan blades according to the invention have a form more like a propeller, which brings the gas into more turbulent flows toward or in the arc zone. This requires, in contrast to the known solutions, exceedingly little switching energy, and has proven in laboratory experiments to-have surprisingly good properties.
  • Fig. 1 illustrates the arrangement according to the invention, with a known per se rotating switch knife set, and with fan blades disposed adjacent to the switch knives.
  • Fig. 2 illustrates the mounting of the fan blades relative to the switch knives.
  • Fig. 3 illustrates the bevel angle of the switch knives in relation to the rotational axis of the device shown in Fig. 1.
  • Fig. 1 shows an SF6 insulated on-load switch based on an extinguishing system consisting of propeller-like mounted fan blades 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12. These fan blades are placed on each side of known per se rotating switch knives 13, 14, 15, 16, 17, 18, said knives 13, 14 forming one knife set, said knives 15, 16 forming a second knife set and said knives 17, 18 forming a third knife set.
  • the first knife set 13, 14 cooperates with fan blades 1, 2, 3, 4; the second knife set 15, 16 cooperates with fan blades 5, 6, 7, 8, and the third knife set 17, 18 cooperates with fan blades 9, 10, 11, 12.
  • the shape and placement of the fan blades relative to the switch knives is of considerable importance in creating the turbulent gas flows necessary for extinguishing the switch arcs.
  • Fig. 2 illustrates how the fan blades are displaced an angle A after the switch knives in the direction of rotation.
  • Reference numeral 19 in Fig. 2 indicates the housing of the on-load switch, and reference numerals 20 and 21 indicate the switch contacts that will engage with a knife set, this being in the selected example knife set 17, 18 in Fig. 1.
  • the fan blades as seen for example in Fig. 2 with fan blades 9, 10, are formed as a unitary element, and are mounted on a revolving shaft 22. It is thus understood that fan blades 9, 10 (like the other fan blades) will rotate simultaneously with the knife sets 17, 18 (and the other knife sets).
  • the fan blades may be joined together via a mid-section 23, as is apparent from Fig. 1 and 2, for example, with fan blades 9, 10.
  • Fig. 3 shows how a typical fan blade may be designed, the configuration also being consistent with what is shown in Fig. 2.
  • the fan blade set could be shaped as shown, for example, with reference numerals 11, 12 and 24 in Fig. 1, the example in Fig. 3 is more closely related to the configuration of fan blade sets 3, 4 and 5, 6, see Fig. 1.
  • the fan blade set here is provided with a mid-section 25 adapted to engage with the revolving shaft 22, as is shown in connection with Fig. 2.
  • At the right in Fig. 3 is shown how two fan blades 4, 6 form an approximate V-shape, where fan blades 4, 6 form a respective angle B with the center line axis CL through revolving shaft 22 in Fig. 1 and 2.
  • the angle A in Fig. 2 is preferably in the range of 20°-45°
  • the angle B in Fig. 3 is in the range of 15°-45°
  • angle C is in the range of 90°-150°.
  • angle C the angle between, for example, fan blades 9 and 11 will also be equal to angle C.

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Vehicle Body Suspensions (AREA)
  • Electronic Switches (AREA)
EP92850135A 1991-06-12 1992-06-10 An arrangement in an SF6 insulated, high voltage on-load switch Expired - Lifetime EP0518837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO912265A NO172998C (no) 1991-06-12 1991-06-12 Anordning ved sf6-isolert, hoeyspent lastbryter
NO912265 1991-06-12

Publications (2)

Publication Number Publication Date
EP0518837A1 EP0518837A1 (en) 1992-12-16
EP0518837B1 true EP0518837B1 (en) 1995-02-22

Family

ID=19894209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92850135A Expired - Lifetime EP0518837B1 (en) 1991-06-12 1992-06-10 An arrangement in an SF6 insulated, high voltage on-load switch

Country Status (5)

Country Link
EP (1) EP0518837B1 (no)
DE (1) DE69201462T2 (no)
ES (1) ES2068699T3 (no)
FI (1) FI922714A (no)
NO (1) NO172998C (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE315831T1 (de) * 1998-12-04 2006-02-15 Het Veer Nv Hochspannungsschalter
ES1229781Y (es) 2019-04-26 2019-08-12 Ormazabal Y Cia S L U Interruptor de corte en gas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL39387C (no) * 1933-05-16
JPS57119429A (en) * 1981-01-17 1982-07-24 Mitsubishi Electric Corp Switching device
DE3514853A1 (de) * 1985-04-24 1986-10-30 Siemens AG, 1000 Berlin und 8000 München Unter last trennender hochspannungs-drehschalter
NO167614C (no) * 1989-03-20 1991-11-20 Eb Distribusjon Anordning ved slukking av brytelysbue i lastbryter.

Also Published As

Publication number Publication date
NO172998B (no) 1993-06-28
EP0518837A1 (en) 1992-12-16
DE69201462T2 (de) 1995-06-14
NO172998C (no) 1993-10-06
NO912265L (no) 1992-12-14
FI922714A0 (fi) 1992-06-11
FI922714A (fi) 1992-12-13
NO912265D0 (no) 1991-06-12
ES2068699T3 (es) 1995-04-16
DE69201462D1 (de) 1995-03-30

Similar Documents

Publication Publication Date Title
JPS59148220A (ja) 電気的スイッチ
JPH02276122A (ja) 回転アークしゃ断器
US10804056B2 (en) Electrical switch
EP0518837B1 (en) An arrangement in an SF6 insulated, high voltage on-load switch
US4529853A (en) Electric circuit breaker with self blow-out by rotation of the arc
JP2566946B2 (ja) 遮断器
US4409446A (en) Electrical switchgear
JPS6340329B2 (no)
JPH04284320A (ja) 回転式消弧スイッチ
US5464956A (en) Rotating arc interrupter for loadbreak switch
US2223731A (en) Circuit interrupting device
US3609267A (en) Electric load changeover switch with movable contacts insertable in a rotary shaft, and arc discharge channels
CN212750658U (zh) 一种灭弧装置和隔离开关
KR100760660B1 (ko) 부하개폐기의 소호부
GB2025139A (en) Gas-blast circuit breaker
WO1999014776A1 (en) Current limiting circuit breaker with current commutation
US5259108A (en) Method of assembling rotary puffer switch
SU1524104A1 (ru) Автогазовый выключатель Чурсина
US20240234056A9 (en) Arc chute and load switch comprising same
US20240136130A1 (en) Arc chute and load switch comprising same
JPH0472327B2 (no)
JPH0572691B2 (no)
US20240153724A1 (en) Arc chute and load break switch including same
CN217881381U (zh) 引弧触头片、断路器及其动触头模块
SU909724A1 (ru) Дугогасительное устройство высоковольтного воздушного выключател

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE DK ES FR IT LI SE

17P Request for examination filed

Effective date: 19930607

17Q First examination report despatched

Effective date: 19940407

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE DK ES FR IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19950222

Ref country code: DK

Effective date: 19950222

Ref country code: CH

Effective date: 19950222

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REF Corresponds to:

Ref document number: 69201462

Country of ref document: DE

Date of ref document: 19950330

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2068699

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950522

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20110624

Year of fee payment: 20

Ref country code: FR

Payment date: 20110630

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110622

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110625

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69201462

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69201462

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120612

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20140827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20120611