EP1330831A1 - Buse isolante pour disjoncteur a soufflage d'arc - Google Patents
Buse isolante pour disjoncteur a soufflage d'arcInfo
- Publication number
- EP1330831A1 EP1330831A1 EP01982527A EP01982527A EP1330831A1 EP 1330831 A1 EP1330831 A1 EP 1330831A1 EP 01982527 A EP01982527 A EP 01982527A EP 01982527 A EP01982527 A EP 01982527A EP 1330831 A1 EP1330831 A1 EP 1330831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- nozzle
- polymer
- circuit breaker
- filler
- 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.)
- Granted
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-blown circuit-breakers using an insulating gas.
- the invention relates more particularly to the insulating nozzles for such circuit breakers.
- An arc blast circuit breaker uses an insulating dielectric gas, such as sulfur hexafluoride, for cutting the electric arc.
- the breaking chamber of these circuit breakers comprises an insulating nozzle which is used to channel the gas, and thus to increase the pressure of insulating gas in the vicinity of the electric arc, which promotes the breaking of the electric arc.
- the nozzle undergoes wear by mechanical abrasion which results from the passage of the gas flow over the surface of the nozzle.
- the nozzle also undergoes wear by pyrolysis resulting from the interaction between the radiation from the electric arc and the material of the nozzle.
- the invention aims 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.
- 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).
- the material comprises 98% by weight of polymer (A) and 2% by weight of filler (B)
- the filler (B) has a particle size less than 50 ⁇ m.
- the particle size is less than 1 ⁇ .
- Comparative tests are carried out on nozzles according to the invention and on nozzles according to the state of the art.
- the manufacture of the nozzles is carried out according to known methods.
- a mixture of the composition to be tested is produced by an intimate mixture of fluoropolymer powder and powder of the filler. Then a sketch is made from this composition.
- the blank is produced by isostatic pressing and then baked in the oven.
- 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.
- Two series of tests are carried out.
- a self-expanding circuit breaker-model is used comprising a chamber filled with insulating gas SF6 in which is placed a cylindrical nozzle formed of the material to be tested and contacts engaged in the nozzle on both sides. other of it.
- the nozzle has an internal diameter of around 20 mm and a thickness of around 10 mm. We establish the arc between the contacts and wait for the break. The following measurements are made.
- the maximum pressure (PMAX5) reached in the chamber at the fifth cut is also measured, in order to check whether the capacity of the material to produce insulating gas remains after several cuts.
- a second series of tests is carried out with an industrial medium-voltage circuit breaker of the puffer type.
- the measurements carried out are then as follows.
- the mixture is composed of TFM polymer and 0.6% by weight of SiO2.
- the results of the tests are as follows:
- the mixture is composed of PTFE and 0.6% by weight of ZnO.
- the results of the tests are as follows:
- the mixture is composed of PTFE and 5% by weight of SiO2.
- the results of the tests are as follows:
- composition contains only the TFM polymer.
- results of the tests are as follows:
- the mixture is composed of PTFE and 20% by weight of CaF2.
- the results of the tests are as follows:
- Example 11 The mixture is composed of PTFE.
- the results of the tests are as follows:
- the mixture is composed of PTFE and 0.3% by weight of MoS2.
- the results of the tests are as follows:
- Examples 9-13 are sometimes better as regards certain properties than those of Examples 1-8 according to the invention, but they are defective for other properties.
- the results of Examples 1-8 in accordance with the invention have the advantage of being satisfactory for all of the properties analyzed.
Landscapes
- Circuit Breakers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Claims
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 true EP1330831A1 (fr) | 2003-07-30 |
EP1330831B1 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 (fr) |
EP (1) | EP1330831B1 (fr) |
AT (1) | ATE396492T1 (fr) |
AU (1) | AU2002214087A1 (fr) |
CA (1) | CA2426702C (fr) |
DE (1) | DE60134165D1 (fr) |
FR (1) | FR2815765B1 (fr) |
MX (1) | MXPA03003508A (fr) |
WO (1) | WO2002035567A1 (fr) |
Families Citing this family (4)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH596641A5 (fr) * | 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 |
-
2000
- 2000-10-23 FR FR0013559A patent/FR2815765B1/fr not_active Expired - Fee Related
-
2001
- 2001-10-19 AU AU2002214087A patent/AU2002214087A1/en not_active Abandoned
- 2001-10-19 WO PCT/FR2001/003263 patent/WO2002035567A1/fr active IP Right Grant
- 2001-10-19 CA CA002426702A patent/CA2426702C/fr not_active Expired - Fee Related
- 2001-10-19 US US10/398,755 patent/US7211614B2/en not_active Expired - Lifetime
- 2001-10-19 MX MXPA03003508A patent/MXPA03003508A/es unknown
- 2001-10-19 AT AT01982527T patent/ATE396492T1/de not_active IP Right Cessation
- 2001-10-19 DE DE60134165T patent/DE60134165D1/de not_active Expired - Lifetime
- 2001-10-19 EP EP01982527A patent/EP1330831B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0235567A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2426702A1 (fr) | 2002-05-02 |
EP1330831B1 (fr) | 2008-05-21 |
CA2426702C (fr) | 2009-09-29 |
US20040014868A1 (en) | 2004-01-22 |
FR2815765B1 (fr) | 2003-04-11 |
DE60134165D1 (de) | 2008-07-03 |
ATE396492T1 (de) | 2008-06-15 |
AU2002214087A1 (en) | 2002-05-06 |
MXPA03003508A (es) | 2003-08-07 |
WO2002035567A1 (fr) | 2002-05-02 |
US7211614B2 (en) | 2007-05-01 |
FR2815765A1 (fr) | 2002-04-26 |
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