EP1123557A1 - Coupe-circuit haute tension et son procede d'assemblage - Google Patents
Coupe-circuit haute tension et son procede d'assemblageInfo
- Publication number
- EP1123557A1 EP1123557A1 EP99949066A EP99949066A EP1123557A1 EP 1123557 A1 EP1123557 A1 EP 1123557A1 EP 99949066 A EP99949066 A EP 99949066A EP 99949066 A EP99949066 A EP 99949066A EP 1123557 A1 EP1123557 A1 EP 1123557A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- sheath
- electrically insulating
- circuit breaker
- insulating fluid
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 14
- 239000012530 fluid Substances 0.000 claims abstract description 23
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 5
- 230000005686 electrostatic field Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H2085/0225—Means for preventing discharge, e.g. corona ring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
Definitions
- the invention relates to a high voltage circuit breaker and its assembly process.
- circuit breakers or fuses In the field of circuit breakers or fuses, it is known to produce a so-called "integral break" circuit breaker which is active over a wide range of current values, by associating at least one limiting fuse element, produced for example with a silver wire, and at least one expulsion fusible element, made for example with a tin wire.
- a fuse which can be submerged, is known from US-A-4, 146, 862.
- the clearance between the tin wire and the insulating sheath cannot be reduced in order to limit the sparking sparks without risk of jamming or breaking of the tin wire when it is introduced into the sheath.
- the breakdown level cannot therefore be improved on known circuit breakers. It is to these drawbacks that the invention more particularly intends to remedy by proposing a fuse and an assembly method which make it possible to obtain effective insulation of the wire of the expelling fuse element, including when the fuse is subjected. to an intense electrostatic field, such as when immersed in an oil bath.
- the invention relates to a high-voltage circuit breaker comprising, in series, at least one limiting fuse element and at least one expulsion fuse element comprising an electrically conductive wire surrounded by an electrically insulating sheath, characterized in that the clearance space, defined between the external surface of the wire and the internal surface of the sheath, is filled with an electrically insulating fluid. Thanks to the invention, there is no air gap between the wire and the insulating sheath in which breakdown sparks could form. On the contrary, the electrically insulating fluid increases the insulation of the wire with respect to its environment.
- the circuit breaker incorporates one or more of the following characteristics:
- the electrically insulating fluid has lubricant properties. This facilitates the introduction of the wire inside the sheath.
- the electrically insulating fluid is a gel or a paste based on silicone.
- the electrically insulating fluid is obtained by vulcanization of an oil deposited in the sheath before or after insertion of the wire.
- the wire is a fusible wire based on tin.
- the invention also relates to a method of assembling a circuit breaker as previously described and, more specifically, a method which consists in lining the clearance space, defined between the external surface of the wire and the internal surface of the sheath, with an electrically insulating fluid.
- the electrically insulating fluid is deposited inside the sheath before insertion of the wire into the sheath.
- the electrically insulating fluid is applied to the wire before it is introduced into the sheath.
- the wire is introduced into the sheath, then the space defined between the wire and the sheath is filled with the electrically insulating fluid. Any or the variant of the process envisaged, the electrically insulating fluid can be vulcanized after the wire has been placed in the sheath.
- FIG. 2 is an external view of the fuse element with expulsion from the circuit breaker of FIG. 1 and
- FIG. 3 is a section on a larger scale along the line III-III in Figure 2.
- the circuit breaker 1, shown in Figure 1 consists of an insulating tube 2, the two ends of which are closed by plugs 3 and 4 intended to be connected to an electrical line. Between the plugs 3 and 4 is disposed a frame 5, made of electrically insulating material and around which are surrounded one or more limiting elements each formed of a silver wire. For clarity of the drawing, a single silver wire 6 is shown in FIG. 1, this silver wire being placed helically around the frame 5.
- the silver wire 6 is welded by one end 6a to a conductive ring 5a carried by the armature 5.
- the wire 7 and the sheath 8 constitute an expulsion element 9 mounted in series with the wire 6, between the plugs 3 and 4.
- the expulsion element 9 is also arranged in a helix around the frame 5.
- a machon 10 made of glass fiber fabric is disposed around the sheath 8 and constitutes the outer surface of the expulsion element 9.
- This sleeve 10 has a function of reinforcing the sheath 8, in particular in the event of an elevation of the pressure prevailing inside this sheath.
- the fuse comprises several limiting elements 6, several corresponding exploding elements 9 are provided.
- a space E forming a clearance is defined inside the sheath 8 around the conductor 7.
- This space E has an elongated annular shape because it is delimited by the substantially cylindrical external surface 7b of the conductor 7 and through the substantially cylindrical internal surface 8b of the sheath 8.
- the clearance obtained must be sufficient to allow easy introduction of the conductive wire 7 inside the sheath 8.
- space E is filled with a silicone-based gel 20, this gel being electrically insulating.
- the risks of breakdown between the surfaces 7b and 8b are greatly reduced, or even eliminated.
- the fact that the gel 20 is based on silicone also gives it lubricant properties which are used during the introduction of the wire 7 into the sheath 8.
- the assembly of the circuit breaker 1 comprises a step of filling the space E with the gel 20.
- this filling can be carried out by depositing the gel 20 inside the sheath 8, then inserting the wire 7 in this sheath, the lubricant properties of the silicone then being used for the sliding of the wire 7 relative to the volume of gel 20 filling the space E.
- the wire 7 is placed in the sheath 8 and the space E is filled with electrically insulating fluid 20, for example by creating a vacuum by suction at one end of the fuse element, while 'A sufficient amount of fluid is disposed at the other end.
- Gel 20 can also be obtained by vulcanization of a low viscosity oil, such an oil can be introduced into space E before or after placing the wire 7 in the sheath 8 because of its low viscosity. When the wire is in place in the sheath, this oil is vulcanized, which gives it a higher viscosity allowing it to be immobilized relative to the wire 7 and the sheath 8.
- a low viscosity oil such an oil can be introduced into space E before or after placing the wire 7 in the sheath 8 because of its low viscosity.
- Components other than silicone can be used to make an E-space filling gel, paste or oil.
- a fuse produced by the invention can be subjected to an intense electrostatic field such as is encountered, in particular, in the dielectric baths of the transformers.
Landscapes
- Fuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813228 | 1998-10-19 | ||
FR9813228A FR2784793B1 (fr) | 1998-10-19 | 1998-10-19 | Coupe/circuit haute tension et son procede d'assemblage |
PCT/FR1999/002531 WO2000024023A1 (fr) | 1998-10-19 | 1999-10-18 | Coupe-circuit haute tension et son procede d'assemblage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1123557A1 true EP1123557A1 (fr) | 2001-08-16 |
Family
ID=9531849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99949066A Withdrawn EP1123557A1 (fr) | 1998-10-19 | 1999-10-18 | Coupe-circuit haute tension et son procede d'assemblage |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1123557A1 (fr) |
JP (1) | JP2002528856A (fr) |
AU (1) | AU751371B2 (fr) |
CA (1) | CA2344640A1 (fr) |
FR (1) | FR2784793B1 (fr) |
HU (1) | HUP0104517A2 (fr) |
IL (1) | IL142089A0 (fr) |
NO (1) | NO20011541D0 (fr) |
NZ (1) | NZ510729A (fr) |
PL (1) | PL347363A1 (fr) |
WO (1) | WO2000024023A1 (fr) |
YU (1) | YU22101A (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2640128A (en) * | 1952-05-02 | 1953-05-26 | Westinghouse Electric Corp | Circuit interrupter |
US3684995A (en) * | 1970-12-09 | 1972-08-15 | Westinghouse Electric Corp | Electrical bushing assembly |
US4146862A (en) * | 1977-08-29 | 1979-03-27 | Rte Corporation | Energy limiting oil immersible fuse |
DE3237326A1 (de) * | 1982-10-08 | 1984-04-12 | Wickmann-Werke GmbH, 5810 Witten | Hochspannungs-hochleistungs-sicherung |
US5714923A (en) * | 1996-05-23 | 1998-02-03 | Eaton Corporation | High voltage current limiting fuse with improved low overcurrent interruption performance |
-
1998
- 1998-10-19 FR FR9813228A patent/FR2784793B1/fr not_active Expired - Lifetime
-
1999
- 1999-10-18 CA CA002344640A patent/CA2344640A1/fr not_active Abandoned
- 1999-10-18 HU HU0104517A patent/HUP0104517A2/hu unknown
- 1999-10-18 AU AU62081/99A patent/AU751371B2/en not_active Ceased
- 1999-10-18 IL IL14208999A patent/IL142089A0/xx unknown
- 1999-10-18 PL PL99347363A patent/PL347363A1/xx not_active IP Right Cessation
- 1999-10-18 WO PCT/FR1999/002531 patent/WO2000024023A1/fr active IP Right Grant
- 1999-10-18 YU YU22101A patent/YU22101A/sh unknown
- 1999-10-18 EP EP99949066A patent/EP1123557A1/fr not_active Withdrawn
- 1999-10-18 JP JP2000577685A patent/JP2002528856A/ja active Pending
- 1999-10-18 NZ NZ510729A patent/NZ510729A/xx unknown
-
2001
- 2001-03-26 NO NO20011541A patent/NO20011541D0/no not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0024023A1 * |
Also Published As
Publication number | Publication date |
---|---|
NZ510729A (en) | 2003-03-28 |
AU751371B2 (en) | 2002-08-15 |
CA2344640A1 (fr) | 2000-04-27 |
HUP0104517A2 (hu) | 2002-03-28 |
NO20011541L (no) | 2001-03-26 |
NO20011541D0 (no) | 2001-03-26 |
IL142089A0 (en) | 2002-03-10 |
WO2000024023A1 (fr) | 2000-04-27 |
FR2784793A1 (fr) | 2000-04-21 |
PL347363A1 (en) | 2002-04-08 |
FR2784793B1 (fr) | 2000-12-29 |
YU22101A (sh) | 2003-07-07 |
JP2002528856A (ja) | 2002-09-03 |
AU6208199A (en) | 2000-05-08 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17Q | First examination report despatched |
Effective date: 20011220 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GRIMALDI, YVES Inventor name: RAMBAUD, THIERRY |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20020806 |