EP1330831B1 - Buse isolante pour disjoncteur a soufflage d'arc - Google Patents

Buse isolante pour disjoncteur a soufflage d'arc Download PDF

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Publication number
EP1330831B1
EP1330831B1 EP01982527A EP01982527A EP1330831B1 EP 1330831 B1 EP1330831 B1 EP 1330831B1 EP 01982527 A EP01982527 A EP 01982527A EP 01982527 A EP01982527 A EP 01982527A EP 1330831 B1 EP1330831 B1 EP 1330831B1
Authority
EP
European Patent Office
Prior art keywords
weight
nozzle
filler
polymer
bar
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
EP01982527A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1330831A1 (fr
Inventor
Jean-Luc Bessede
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.)
Grid Solutions SAS
Original Assignee
Areva T&D SAS
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
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Application filed by Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1330831A1 publication Critical patent/EP1330831A1/fr
Application granted granted Critical
Publication of EP1330831B1 publication Critical patent/EP1330831B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7076—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by the use of special materials

Definitions

  • the present invention relates to high or medium voltage arc-blower circuit breakers using an insulating gas.
  • the invention relates more particularly to insulating nozzles for such circuit breakers.
  • An arc-blow breaker uses an insulating dielectric gas, such as sulfur hexafluoride, to cut the arc.
  • the breaking chamber of these circuit breakers comprises an insulating nozzle which serves to channel the gas, and thus to increase the pressure of insulating gas in the vicinity of the electric arc, which promotes the cutting of the electric arc.
  • the nozzle undergoes wear by mechanical abrasion resulting from the passage of gas flow on the surface of the nozzle.
  • the nozzle also experiences pyrolysis wear resulting from the interaction between the radiation from the electric arc and the material of the nozzle.
  • the wear of the nozzle is used to facilitate the cutting of the electric arc. Indeed, due to mechanical abrasion or wear by pyrolysis, the material lost by the nozzle produces, in contact with the electric arc, an insulating gas. This increases the pressure at the arc and thus promotes the extinction of the arc.
  • the incomplete pyrolysis of this material may result in the deposition of conductive particles in the interrupting chamber, thereby causing a degradation of the dielectric strength of the circuit breaker.
  • the object of the invention is to provide an insulating nozzle for a circuit breaker having a combination of advantageous properties from the point of view of the efficiency of the circuit breaker and its service life.
  • an insulating nozzle for an arc blow-through circuit breaker characterized in that the material constituting the nozzle comprises (A) from 90 to 99.9% by weight of a fluorinated polymer, and B) from 0.1 to 10% by weight of a filler based on at least one oxide selected from (B1) SiO2 and other oxidized forms of the metals of column IVA of the classification of elements, and (B2 ) ZnO, CdO and other oxidized forms of column IIB metals from the classification of elements.
  • the material constituting the nozzle comprises from 99 to 99.5% by weight of polymer (A) and from 0.5 to 1% by weight of filler (B). According to an exemplary embodiment, the material comprises 99.4% by weight of polymer (A) and 0.6% by weight of filler (B).
  • the material constituting the nozzle comprises from 92 to 99% by weight of polymer (A) and from 1 to 8% by weight of filler (B). According to an exemplary embodiment, the material comprises 98% by weight of polymer (A) and 2% by weight of filler (B)
  • the filler (B) has a particle size of less than 50 ⁇ m.
  • the particle size is less than 1 ⁇ m.
  • the manufacture of the nozzles is carried out according to the known methods.
  • a mixture of the test composition is produced by intimate mixing of fluoropolymer powder and powder of the filler. Then a sketch is made from this composition.
  • the blank is made by isostatic pressing and then baked.
  • the final shape of the nozzle is then obtained by machining the blank.
  • the final nozzle is directly obtained by injecting the mixture, previously melted, into a mold.
  • the mixture is composed of polytetrafluoroethylene (PTFE) and 0.6% by weight of SiO2.
  • PTFE polytetrafluoroethylene
  • the mixture is composed of a modified PTFE known under the name of TFM (trademark of Dyneon) and 0.6% by weight of SiO2.
  • TFM trademark of Dyneon
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.4 18.0 18.4 9.3 6.67 16.9 3.94
  • the mixture is composed of PTFE and 2% by weight of SiO2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.2 23.1 18.8 10.3 6 13.8 5.4
  • the mixture is composed of TFM polymer and 0.6% by weight of SiO 2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.2 24.2 17.0 8.9 12.5 18.0 4.1
  • the mixture is composed of TFM polymer and 0.6% by weight of SiO 2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.2 26.8 17.4 9.4 15.4 20.0 4.5
  • the mixture is composed of PTFE and 0.6% by weight of ZnO.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.2 22.7 15.7 9.4 16.5 22.7 4.9
  • the mixture is composed of PTFE and 5% by weight of SiO2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.0 20 20.8 - - - -
  • the mixture is composed of TFM polymer and 5% by weight of SiO 2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.0 21.3 22.1 - - - -
  • composition contains only the TFM polymer.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 3.0 22.8 19.4 10.6 4.95 17.9 4.76
  • the mixture is composed of PTFE and 20% by weight of CaF2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 4.0 19.5 17.1 No result 9.3 16.3 4.85
  • the mixture is composed of PTFE.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.2 16.2 15.7 9.6 6.7 16.6 4.5
  • the mixture is composed of PTFE and 0.3% by weight of MoS2.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 3.2 23.5 12.8 7.8 7.9 15.1 4.4
  • the mixture is composed of PTFE and 0.6% by weight of Al2CoO4.
  • the test results are as follows: RSA AUG (%) PMAX1 PMAX5 USUCOL USUVOL USUCONT (Bar) (Bar) (Mm) (Mm) (Mm) 2.6 21.9 13.3 8.1 15.4 20.0 4.4
  • Examples 9-13 are sometimes better with respect to certain properties than those of Examples 1-8 according to the invention, but they are defective for other properties. As has been pointed out above, the results of Examples 1-8 according to the invention have the advantage of being satisfactory for all the properties analyzed.
EP01982527A 2000-10-23 2001-10-19 Buse isolante pour disjoncteur a soufflage d'arc Expired - Lifetime EP1330831B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0013559A FR2815765B1 (fr) 2000-10-23 2000-10-23 Buse isolante pour disjoncteur a soufflage d'arc
FR0013559 2000-10-23
PCT/FR2001/003263 WO2002035567A1 (fr) 2000-10-23 2001-10-19 Buse isolante pour disjoncteur a soufflage d'arc

Publications (2)

Publication Number Publication Date
EP1330831A1 EP1330831A1 (fr) 2003-07-30
EP1330831B1 true EP1330831B1 (fr) 2008-05-21

Family

ID=8855633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01982527A Expired - Lifetime EP1330831B1 (fr) 2000-10-23 2001-10-19 Buse isolante pour disjoncteur a soufflage d'arc

Country Status (9)

Country Link
US (1) US7211614B2 (es)
EP (1) EP1330831B1 (es)
AT (1) ATE396492T1 (es)
AU (1) AU2002214087A1 (es)
CA (1) CA2426702C (es)
DE (1) DE60134165D1 (es)
FR (1) FR2815765B1 (es)
MX (1) MXPA03003508A (es)
WO (1) WO2002035567A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8306907B2 (en) * 2003-05-30 2012-11-06 Jpmorgan Chase Bank N.A. System and method for offering risk-based interest rates in a credit instrument
CN101986405B (zh) * 2010-06-18 2012-10-03 江苏常新密封材料有限公司 一种断路器用喷口的制造方法
JP5679873B2 (ja) * 2011-03-11 2015-03-04 株式会社東芝 耐アーク性絶縁物および遮断器
FR3011976B1 (fr) * 2013-10-10 2015-12-18 Alstom Technology Ltd Sectionneur a pouvoir d'etablissement et de coupure ameliores

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH596641A5 (es) * 1976-04-02 1978-03-15 Sprecher & Schuh Ag
JPS57202003A (en) * 1981-06-03 1982-12-10 Hitachi Ltd Sf6 gas insulating electric device and method of producing same
DE19517540A1 (de) * 1995-05-12 1996-11-14 Abb Research Ltd Löschgasabgebender Werkstoff und Druckgasschalter mit einem solchen Werkstoff

Also Published As

Publication number Publication date
US20040014868A1 (en) 2004-01-22
DE60134165D1 (de) 2008-07-03
ATE396492T1 (de) 2008-06-15
AU2002214087A1 (en) 2002-05-06
US7211614B2 (en) 2007-05-01
CA2426702C (fr) 2009-09-29
WO2002035567A1 (fr) 2002-05-02
FR2815765A1 (fr) 2002-04-26
FR2815765B1 (fr) 2003-04-11
EP1330831A1 (fr) 2003-07-30
CA2426702A1 (fr) 2002-05-02
MXPA03003508A (es) 2003-08-07

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