CN105957778B - A kind of attachment structure of SF6 breaker closings resistance and arc-chutes - Google Patents
A kind of attachment structure of SF6 breaker closings resistance and arc-chutes Download PDFInfo
- Publication number
- CN105957778B CN105957778B CN201610382968.4A CN201610382968A CN105957778B CN 105957778 B CN105957778 B CN 105957778B CN 201610382968 A CN201610382968 A CN 201610382968A CN 105957778 B CN105957778 B CN 105957778B
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- Prior art keywords
- resistance
- switching
- arc
- chutes
- flange
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
Abstract
The invention discloses the attachment structure of a kind of SF6 breaker closings resistance and arc-chutes, including the switching-on resistance loop being connected in parallel and arc-chutes major loop, wherein, combined floodgate circuit includes the resistance heap of multiple resistor disc connection in series-parallel composition, one end of the resistance heap is connected by the first switching-on resistance flange with outlet conductor, the other end of the resistance heap is connected with switching-on resistance contact by the second switching-on resistance flange, and the arc-chutes major loop is connected by main circuit conductor with outlet conductor.When breaker mechanism, which operates, to close a floodgate, switching-on resistance contact first closes a floodgate, the switching-on resistance loop being connected with switching-on resistance contact is connected, switching-on resistance is shifted to an earlier date in line attachment system, largely consumption is on switching-on resistance piece for overvoltage energy on circuit, and then arc-chutes contact is closed a floodgate, and arc-chutes major loop is connected, the short circuit of switching-on resistance loop, switching-on resistance is out of service.
Description
【Technical field】
The present invention relates to high-voltage switch gear transmission facility technical field, is closed a floodgate more particularly to a kind of SF6 potting breakers electric
The arrangement of resistance and the attachment structure of arc-chutes.
【Background technology】
Switching-on resistance is the dress for absorbing caused switching overvoltage energy when primary cut-out closes in power system
Put, according to the requirement of power system, general 363kV and above SF6 breakers carry switching-on resistance, particularly
It is more than extra-high voltage grade, need to resistor disc quantity it is very big, in the prior art, resistance heap generally suspension be fixed on arc-chutes method
Lan Shang, the weight of this arrangement resistance heap then can be all added on arc-chutes framework and arc-chutes insulating supporting, resistor disc quantity
When a lot, resistor disc series connection length is very long, and hang resistor disc stress is bad, and resistor disc, which mutually extrudes, can cause resistor disc quilt
Squeeze broken and too high to the intensity requirement of framework and insulating supporting, arc-chutes bulk strength reliability reduction.
【The content of the invention】
A kind of the shortcomings that present invention is in order to overcome prior art, there is provided company of SF6 breaker closings resistance and arc-chutes
Binding structure, can avoid switching-on resistance piece series connection length it is very long when, switching-on resistance piece mutually extrude caused by resistor disc be squeezed it is broken,
And resistance contact head is to the direct impulsive force of resistor disc when can buffer mechanism operation, so as to avoid resistor disc from being hit brokenly
It is broken, and the intensity requirement of arc-chutes framework and insulating supporting is substantially reduced.
A kind of attachment structure of SF6 breaker closings resistance and arc-chutes, including switching-on resistance loop and arc-chutes master return
Road, wherein, combined floodgate circuit includes resistance heap of multiple resistor disc connection in series-parallel in composition, and one end of the resistance heap is closed a floodgate by first
Resistance flange is connected with outlet conductor, and the other end of the resistance heap connects switching-on resistance by the second switching-on resistance flange and touched
Head, the arc-chutes major loop are connected by main circuit conductor with outlet conductor.
The attachment structure further comprises there is switching-on resistance supporting construction, including respectively with the first switching-on resistance flange and
The switching-on resistance support of second switching-on resistance flange connection.
Described switching-on resistance loop further comprises switching-on resistance contact, be flexible coupling and switching-on resistance, switching-on resistance touch
Head is connected by being flexible coupling with the second switching-on resistance flange.
The arc-chutes main circuit conductor is directly connected with outlet conductor or arc-chutes main circuit conductor closes by first
Lock resistance flange is connected with outlet conductor.
When arc-chutes main circuit conductor is directly connected with outlet conductor, the arc-chutes main circuit conductor by be flexible coupling with
First switching-on resistance flange connects.
A kind of attachment structure of SF6 breaker closings resistance and arc-chutes, is formed by multiple switching-on resistance piece connection in series-parallel
Switching-on resistance heap uses independent insulating supporting structure, and is consolidated by the switching-on resistance flange and independent insulating supporting structure of both sides
It is fixed, then be supported on by independent insulation supporting cylinder on metal shell；The main circuit conductor side quiet side of connection arc-chutes of arc-chutes
Flange, opposite side is connected with switching-on resistance flange, then leads to circuit breaker external by outlet conductor, realizes whole arc-chutes
Galvanic circle.
Switching-on resistance contact is fixedly connected on the quiet side flange of arc-chutes, the switching-on resistance by switching-on resistance contact seat supports
Contact is connected by being flexible coupling with the switching-on resistance flange of side.
Arc-chutes major loop structure is by arc-chutes dynamic/static contact, is incited somebody to action to the quiet side flange of arc-chutes, then by main circuit conductor
The quiet side flange of arc-chutes is connected with switching-on resistance flange, then is formed and closed a floodgate with being connected outside metal shell by outlet conductor
Resistance loop electrical circuit in parallel.
Switching-on resistance loop structure is that resistance fracture is connected by being flexible coupling with the switching-on resistance flange of side, then by closing
Lock resistance heap to opposite side switching-on resistance flange, then by being connected outside outlet conductor and metal shell；Switching-on resistance supports
Structure is that switching-on resistance heap is assemblied on the switching-on resistance flange at both ends, and the two switching-on resistance flanges are again by two insulating supportings
It is respectively supported on metal shell.
Compared with prior art, the present invention at least has the advantages that：Attachment structure of the present invention connects including connection in series-parallel
The switching-on resistance loop connect and arc-chutes major loop, wherein, combined floodgate circuit includes the resistance heap of multiple resistor disc connection in series-parallel composition,
One end of the resistance heap is connected by the first switching-on resistance flange with outlet conductor, and the other end of the resistance heap is closed by second
Lock resistance flange is connected with switching-on resistance contact, and the arc-chutes major loop is connected by main circuit conductor with outlet conductor.This
Sample, when breaker mechanism, which operates, to close a floodgate, switching-on resistance contact closes a floodgate prior to arc-chutes contact, is connected with switching-on resistance contact
Switching-on resistance loop is connected, and switching-on resistance is shifted to an earlier date in line attachment system, and the overvoltage energy expenditure on circuit is in the electricity that closes a floodgate
Hinder on piece, then arc-chutes contact is closed a floodgate, and arc-chutes major loop is connected, and by the short circuit of switching-on resistance loop, switching-on resistance exits fortune
OK.
When this structure can avoid switching-on resistance piece series connection length very long, switching-on resistance piece mutually extrudes caused resistance
Piece is squeezed broken, and resistance contact head is to the direct impulsive force of resistor disc when can buffer mechanism operation, so as to avoid resistor disc
It is hit broken, and it is low with the intensity requirement of insulating supporting to arc-chutes framework.
【Brief description of the drawings】
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the structural representation of embodiments of the invention 2.
Fig. 3 is the structural representation that 6- is flexible coupling.
Sequence number in figure：1- outlet conductors, 2- the first switching-on resistance flanges, 3- resistor discs, 4- the second switching-on resistance flanges, 5-
Switching-on resistance insulating supporting, 6- are flexible coupling, 7- switching-on resistance contact bases, 8- switching-on resistance contact-supports, the quiet side method of 9- arc-chutes
Orchid, 10- switching-on resistance contacts, 11- fracture insulating supportings, 12- arc-chutes frameworks, 13- main circuit conductors.
The present invention is further described below in conjunction with the accompanying drawings.
【Embodiment】
The technical solution adopted for the present invention to solve the technical problems is：In SF6 potting breakers, switching-on resistance piece 3
The switching-on resistance heap formed after connection in series-parallel uses independent insulating supporting structure, and the combined floodgate electricity of both sides is assemblied in by switching-on resistance heap
Hinder on flange, then two by being fixed on switching-on resistance flange insulating supportings are supported on metal shell, switching-on resistance heap with
The electrical connection of resistance fracture contact is using 6 connections that are flexible coupling, the side of the main circuit conductor 13 connection quiet side method of arc-chutes of arc-chutes
Orchid 9, opposite side are either directly connected with outlet conductor 1 or are first connected with the switching-on resistance flange of switching-on resistance heap side, then
Circuit breaker external is led to by outlet conductor 1, realizes the galvanic circle of whole arc-chutes.
When breaker mechanism operates, impulsive force is delivered to by switching-on resistance contact 10 is flexible coupling 6, and 6 bufferings that are flexible coupling are fallen
Impulsive force, so that impulsive force will not pass to switching-on resistance piece 3, avoid influence of the impulsive force to combined floodgate resistor disc 3.Close in addition
Lock resistance heap has independent insulating supporting structure, and therefore, the weight of switching-on resistance heap is born by two insulation supporting cylinders completely, and
Arc-chutes framework 12 does not have to the weight for bearing switching-on resistance heap, and intensity requirement reduces, and improves reliability.
Therefore, the attachment structure of SF6 breaker closings resistance of the invention and arc-chutes specifically includes resistance loop structure,
Resistance supporting construction and arc-chutes major loop structure.
Described switching-on resistance loop includes outlet conductor 1, switching-on resistance flange, switching-on resistance piece 3, is flexible coupling 6, closes a floodgate
Resistance contact head support 8, switching-on resistance contact base 7, and switching-on resistance contact 10.Switching-on resistance fracture is by being flexible coupling 6 and one
The switching-on resistance flange connection of side, then the switching-on resistance flange by switching-on resistance heap to other side, then pass through outlet conductor
It is connected with the metal shell external world.
Described switching-on resistance support is to be assemblied in the switching-on resistance insulation branch of switching-on resistance heap both ends switching-on resistance flange
Support 5, the switching-on resistance insulating supporting is supported on metal shell.
Described arc-chutes major loop is by arc-chutes dynamic/static contact, to the quiet side flange 9 of arc-chutes, then by main circuit conductor
13 are connected the quiet side flange 9 of arc-chutes with the switching-on resistance flange of side, then pass through outlet conductor 1 and phase outside metal shell
Even, the electrical circuit in parallel with switching-on resistance loop is formed.
Please referring specifically to shown in Fig. 3, it is described be flexible coupling 6 include the first pressing plate 16, the second pressing plate 18, the first connector
15th, the second connector 19, conductive soft ribbons 17, and screw 14.Wherein, the first and second connectors 15,19 and conductive soft ribbons 17
It is that multilayer copper foil is made and three is structure as a whole, when this is flexible coupling connection member A and part B, the first connector 15 is logical
Cross the first pressing plate 16 and screw is fixedly connected with components A, the second connector 19 is fixed by the second pressing plate 18 and screw with part B
Connection.
Embodiment 1
Fig. 1 show embodiments of the invention 1, including outlet conductor 1, the first switching-on resistance flange 2, switching-on resistance piece 3,
Second switching-on resistance flange 4, switching-on resistance insulating supporting 5 are flexible coupling 6, switching-on resistance contact base 7, switching-on resistance contact-support
8, the quiet side flange 9 of arc-chutes, switching-on resistance contact 10, fracture insulating supporting 11, arc-chutes framework 12, the major loop of arc-chutes leads
Body 13.
Switching-on resistance loop includes outlet conductor 1, the first and second switching-on resistance flanges 2,4, switching-on resistance piece 3, soft company
Connect 6, switching-on resistance contact-support 8, switching-on resistance contact base 7, and switching-on resistance contact 10.The connection in series-parallel of switching-on resistance piece 3 connects
Switching-on resistance heap is formed after connecing, the first and second switching-on resistance flanges 2,4 are separately positioned on the both sides of switching-on resistance heap and are electrically connected
Connect, each switching-on resistance flange includes vertical portion and horizontal part, wherein, the vertical portion of the first switching-on resistance flange 2 directly with
Outlet conductor 1 is connected, and the vertical portion of the second switching-on resistance flange 46 is connected on switching-on resistance contact base 7 by being flexible coupling, should
Switching-on resistance contact base 7 is connected by switching-on resistance contact-support side flange 9 quiet with arc-chutes, is played a supportive role.Switching-on resistance
Contact is connected electrically on the switching-on resistance contact base 7.That is, switching-on resistance contact base 7 by be flexible coupling 6 and second close a floodgate
Resistance flange 4 connects, then by the 3 to the first switching-on resistance of switching-on resistance piece flange 2, then by being connected to the first switching-on resistance method
Outlet conductor 1 on orchid 2 outside metal shell with being connected.
Switching-on resistance support includes being assemblied in the switching-on resistance insulating supporting 5 at switching-on resistance heap both ends, and the switching-on resistance is exhausted
Edge support 5 is supported on metal shell.I.e.：Switching-on resistance piece 3 is connected into the first switching-on resistance method that resistance heap is assemblied in both ends
On the switching-on resistance flange 4 of orchid 2 and second, the first and second switching-on resistance flanges 2,4 are fixedly supported on by two insulating supportings 5 again
On metal shell.
Arc-chutes major loop structure is to the quiet side flange 9 of arc-chutes, then by main circuit conductor 13 by arc-chutes dynamic/static contact
The quiet side flange 9 of arc-chutes is connected with the first switching-on resistance flange 2, then by being connected to going out on the first switching-on resistance flange 2
Line conductor 1 is connected with the external world, forms the electrical circuit in parallel with switching-on resistance loop.
When breaker mechanism, which operates, to close a floodgate, switching-on resistance contact 10 closes a floodgate prior to arc-chutes contact, is touched with switching-on resistance
The switching-on resistance loop of first 10 connection is connected, and switching-on resistance is shifted to an earlier date in line attachment system, the overvoltage energy on circuit is big
Part consumption is on switching-on resistance piece, and then arc-chutes contact closes a floodgate, and the arc-chutes major loop being connected with arc extinguishing chamber contact is connected,
The short circuit of switching-on resistance loop, switching-on resistance is out of service.
The present invention realizes to be flexibly connected between switching-on resistance piece 3 and switching-on resistance contact 10, when breaker mechanism operates
When, impulsive force is delivered to be flexible coupling by switching-on resistance contact 10 6 falls impulsive force by 6 bufferings that are flexible coupling, so that impulsive force will not
Switching-on resistance piece 3 is passed to, avoids influence of the impulsive force to combined floodgate resistor disc 3.Other switching-on resistance heap has independent support
Structure, supported by insulating supporting 5, can meet the needs of big quantity resistor disc arrangement, and the fracture insulating supporting of arc-chutes
11 are not subject to the weight of switching-on resistance with arc-chutes framework 12, and intensity requirement reduces, and improves Mechanical Reliability.
Embodiment 2
Fig. 2 show embodiments of the invention 2, including outlet conductor 1, the first switching-on resistance flange 2, switching-on resistance piece 3,
Second switching-on resistance flange 4, switching-on resistance insulating supporting 5 are flexible coupling 6, switching-on resistance contact base 7, switching-on resistance contact-support
8, the quiet side flange 9 of arc-chutes, switching-on resistance contact 10, fracture insulating supporting 11, arc-chutes framework 12, arc-chutes main circuit conductor
13。
Switching-on resistance loop includes outlet conductor 1, the first and second switching-on resistance flanges 2,4, switching-on resistance piece 3, soft company
Connect 6, switching-on resistance contact-support 8, switching-on resistance contact base 7, and switching-on resistance contact 10.The connection in series-parallel of switching-on resistance piece 3 connects
Switching-on resistance heap is formed after connecing, the first and second switching-on resistance flanges 2,4 are separately positioned on the both sides of switching-on resistance heap and are electrically connected
Connecing, each switching-on resistance flange includes vertical portion and horizontal part, wherein, the vertical portion of the first switching-on resistance flange 2 passes through soft
Connection 6 is connected with arc-chutes main circuit conductor 13, and arc-chutes main circuit conductor 13 is connected with outlet conductor 1, the second switching-on resistance
The vertical portion of flange 46 is connected on switching-on resistance contact base 7 by being flexible coupling, and the switching-on resistance contact base 7 passes through switching-on resistance
The side flange 9 quiet with arc-chutes of contact-support 8 is connected, and is played a supportive role.Switching-on resistance contact 10 is connected electrically in the switching-on resistance and touched
On headstock 7.That is switching-on resistance contact 10 6 is connected by being flexible coupling with the second switching-on resistance flange 4, then by the electricity that closes a floodgate
Hinder the switching-on resistance of piece 3 to the first flange 2, then 6 be connected by being flexible coupling with main circuit conductor 13, then by outlet conductor 1 and metal
Shell is extraneous to be connected.
Switching-on resistance support includes being assemblied in the switching-on resistance insulating supporting 5 at switching-on resistance heap both ends, and the switching-on resistance is exhausted
Edge support 5 is supported on metal shell.I.e. switching-on resistance piece 3 is connected into the first switching-on resistance flange that resistance heap is assemblied in both ends
2 and second on switching-on resistance flange 4, and the first and second switching-on resistance flanges 2,4 are fixed by two switching-on resistance insulating supportings 5 again
It is supported on metal shell.
Arc-chutes major loop structure is to the quiet side flange 9 of arc-chutes, then by main circuit conductor 13 by arc-chutes dynamic/static contact
The quiet side flange 9 of arc-chutes is joined directly together with outlet conductor 1, then is connected with the external world, forms the electricity in parallel with switching-on resistance loop
Loop.
When breaker mechanism, which operates, to close a floodgate, switching-on resistance contact first closes a floodgate with arc-chutes contact, with switching-on resistance contact
The switching-on resistance loop of 10 connections is connected, and switching-on resistance is shifted to an earlier date in line attachment system, the big portion of overvoltage energy on circuit
Divide with form of thermal energy consumption on switching-on resistance piece, then arc-chutes contact closes a floodgate, and by arc extinguishing chamber contact, quiet side flange 9, leads back
The major loop that road conductor 13 forms with outlet conductor 1 is connected, and the short circuit of switching-on resistance loop, switching-on resistance is out of service.
The present invention realizes to be flexibly connected between switching-on resistance piece 3 and switching-on resistance contact 10, when breaker mechanism operates
When, impulsive force is delivered to the connector of 6 one end that are flexible coupling by switching-on resistance contact 10, then passes to the middle soft ribbons that are flexible coupling, in
Between soft ribbons buffering fall impulsive force so that impulsive force is not transferred to switching-on resistance piece 3, avoid impulsive force to combined floodgate resistor disc
3 influence, in addition switching-on resistance heap have independent supporting construction, supported by switching-on resistance insulating supporting 5, big quantity can be met
The demand of resistor disc arrangement, and arc-chutes fracture insulating supporting 11 is not subject to the weight of switching-on resistance with arc-chutes framework 12,
Intensity requirement reduces, and improves Mechanical Reliability.
The specific embodiment of the present invention is the foregoing is only, but the architectural feature of the present invention is not limited to this, any ability
The technical staff in domain in the field of the invention, all cover in the scope of the claims of the present invention by the change or modification made.
Claims (9)
- A kind of 1. attachment structure of SF6 breaker closings resistance and arc-chutes, it is characterised in that：Including the combined floodgate electricity being connected in parallel Loop and arc-chutes major loop are hindered, wherein, switching-on resistance circuit includes the switching-on resistance of multiple switching-on resistance piece connection in series-parallel composition Heap (3), one end of the switching-on resistance heap are connected by the first switching-on resistance flange (2) with outlet conductor (1), the switching-on resistance heap Other end switching-on resistance contact (10) is connected by the second switching-on resistance flange (4), the arc-chutes major loop passes through master Return conductors (13) are connected with outlet conductor (1)；Described switching-on resistance loop further comprises switching-on resistance contact (10), soft Connect (6) and switching-on resistance heap, the switching-on resistance contact (10) by be flexible coupling (6) be connected with the second switching-on resistance flange (4).
- 2. the attachment structure of a kind of SF6 breaker closings resistance according to claim 1 and arc-chutes, it is characterised in that： The attachment structure further comprises there is switching-on resistance supporting construction, including respectively with the first switching-on resistance flange (2) and second The switching-on resistance support of switching-on resistance flange (4) connection.
- 3. the attachment structure of a kind of SF6 breaker closings resistance according to claim 1 and arc-chutes, it is characterised in that： The switching-on resistance contact (10) is further connected on the quiet side flange of arc-chutes (9) by switching-on resistance contact-support (8).
- 4. the attachment structure of a kind of SF6 breaker closings resistance according to claim 1 and arc-chutes, it is characterised in that： The arc-chutes main circuit conductor (13) is directly connected with outlet conductor (1) or arc-chutes main circuit conductor (13) is by first Switching-on resistance flange (2) is connected with outlet conductor (1).
- 5. the attachment structure of a kind of SF6 breaker closings resistance according to claim 4 and arc-chutes, it is characterised in that： When arc-chutes main circuit conductor (13) is directly connected with outlet conductor (1), the arc-chutes main circuit conductor (13) passes through soft company (6) are connect to be connected with the first switching-on resistance flange (2).
- A kind of 6. attachment structure of SF6 breaker closings resistance and arc-chutes, it is characterised in that：By multiple switching-on resistance piece strings simultaneously The switching-on resistance heap (3) that connection is formed uses independent insulating supporting structure, and passes through the first switching-on resistance flange of both sides and second Switching-on resistance flange is fixed with independent insulating supporting structure, then is supported on by independent insulation supporting cylinder on metal shell；Go out Main circuit conductor (13) side connection quiet side flange of arc-chutes (9) of arc chamber, opposite side are connected with the first switching-on resistance flange, then Circuit breaker external is led to by outlet conductor (1), realizes the galvanic circle of whole arc-chutes.
- 7. the attachment structure of a kind of SF6 breaker closings resistance according to claim 6 and arc-chutes, it is characterised in that： Switching-on resistance contact (10) by be flexible coupling (6) be connected with the second switching-on resistance flange (4), meanwhile, the switching-on resistance contact (10) resistive touch headstock (7) is fixed on the quiet side flange of arc-chutes (9) by contact seat supports (8).
- 8. the attachment structure of a kind of SF6 breaker closings resistance according to claim 6 and arc-chutes, it is characterised in that： Arc-chutes major loop structure is by arc-chutes dynamic/static contact, will be gone out to the quiet side flange of arc-chutes (9), then by main circuit conductor (13) The quiet side flange of arc chamber (9) is connected with the first switching-on resistance flange (2), then by outlet conductor (1) with being connected outside metal shell, Form the electrical circuit in parallel with switching-on resistance loop.
- 9. the attachment structure of a kind of SF6 breaker closings resistance according to claim 6 and arc-chutes, it is characterised in that： Switching-on resistance loop structure be resistance fracture by be flexible coupling (6) be connected with the second switching-on resistance flange (4), then by the electricity that closes a floodgate Heap is hindered to the first switching-on resistance flange (2), then by outlet conductor (1) with being connected outside metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382968.4A CN105957778B (en) | 2016-06-01 | 2016-06-01 | A kind of attachment structure of SF6 breaker closings resistance and arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610382968.4A CN105957778B (en) | 2016-06-01 | 2016-06-01 | A kind of attachment structure of SF6 breaker closings resistance and arc-chutes |
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| CN105957778A CN105957778A (en) | 2016-09-21 |
| CN105957778B true CN105957778B (en) | 2018-02-23 |
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| CN112397336B (en) * | 2019-08-15 | 2023-06-30 | 西安西电开关电气有限公司 | Circuit breaker and mounting structure of closing resistor thereof |
| CN110676129B (en) * | 2019-09-26 | 2021-08-06 | 平高集团有限公司 | Circuit breaker closing resistor tripping mechanism and circuit breaker |
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| CN1059801A (en) * | 1990-09-14 | 1992-03-25 | 株式会社日立制作所 | Gas-break switch |
| CN1066933A (en) * | 1991-05-23 | 1992-12-09 | 株式会社日立制作所 | Circuit-breaker with parallel resistance |
| US5304760A (en) * | 1991-10-02 | 1994-04-19 | Gec Alsthom Sa | Ultra-high-tension circuit-breaker |
| CN1113599A (en) * | 1994-03-31 | 1995-12-20 | 株式会社日立制作所 | Interruptor with parrallel resistors |
| CN101635221A (en) * | 2009-06-24 | 2010-01-27 | 河南平高电气股份有限公司 | Extra-high voltage breaker and extra-high over-voltage preventing system with same |
| CN202384245U (en) * | 2011-11-29 | 2012-08-15 | 山东泰开高压开关有限公司 | Closing resistor closing transmission delay device |
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- 2016-06-01 CN CN201610382968.4A patent/CN105957778B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059801A (en) * | 1990-09-14 | 1992-03-25 | 株式会社日立制作所 | Gas-break switch |
| CN1066933A (en) * | 1991-05-23 | 1992-12-09 | 株式会社日立制作所 | Circuit-breaker with parallel resistance |
| US5304760A (en) * | 1991-10-02 | 1994-04-19 | Gec Alsthom Sa | Ultra-high-tension circuit-breaker |
| CN1113599A (en) * | 1994-03-31 | 1995-12-20 | 株式会社日立制作所 | Interruptor with parrallel resistors |
| CN101635221A (en) * | 2009-06-24 | 2010-01-27 | 河南平高电气股份有限公司 | Extra-high voltage breaker and extra-high over-voltage preventing system with same |
| CN202384245U (en) * | 2011-11-29 | 2012-08-15 | 山东泰开高压开关有限公司 | Closing resistor closing transmission delay device |
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| Publication number | Publication date |
|---|---|
| CN105957778A (en) | 2016-09-21 |
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