CN86104588A - Current limiting circuit breaker with arc commutating structure - Google Patents
Current limiting circuit breaker with arc commutating structure Download PDFInfo
- Publication number
- CN86104588A CN86104588A CN198686104588A CN86104588A CN86104588A CN 86104588 A CN86104588 A CN 86104588A CN 198686104588 A CN198686104588 A CN 198686104588A CN 86104588 A CN86104588 A CN 86104588A CN 86104588 A CN86104588 A CN 86104588A
- Authority
- CN
- China
- Prior art keywords
- contact
- contact arm
- arc
- circuit breaker
- support
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
-
- 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
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A circuit breaker is characterized by: in a pair of discerptible contact, there is a contact to be contained on the movable contact arm, can be movable in an arc chute with arc plate, and arc plate comprises the lower panel of another contact of vicinity.Bonding conductor passes to another contact, and links to each other on electric with this contact.
Description
The present invention relates to a circuit breaker, especially guide the device of arc chute from fixed contact into about the electric arc that is used between separable, producing.
Circuit breaker is the equipment that is widely used in industry, dwelling house and the commerce, prevents the protection that damages owing to overcurrent to provide.When the electric energy consumption increases, supply with the also corresponding increase of power supply capacity of this energy.For this reason, in the place that is short-circuited, have big electric current and flow through power distribution circuit.In this case, Guan Yong circuit interrupter can not prevent to be connected the badly damaged of the equipment of short circuit current outflow side (downstream) of cutout and cutout itself.
Under the extreme over-current condition of circuit breaker, the electromagnetic force that produces on contact arm is enough to promptly with opposing direction rotary contact arm, and contact is separated.Thereby electric arc is elongated, and makes it to have the effect that strengthens arc voltage and arc resistance and restriction arc current.A subsidiary tripgear discharged an operating mechanism rapidly before contact arm is got back to make position, arrive " opening " position from " closure " position, to stop the electric arc reignition.
According to the present invention, circuit breaker comprises an insulation crust with a line terminal and a face terminals; Install in the enclosure as open or closed terminal between the separable contact of circuit; One has the operating mechanism of runing rest and adopts manual operation so that the parts that support rotates between the open and close position; The contact support member that comprises the first and second rotary contact arms, each contact arm supports a contact, and first contact arm is rotatably connected on the support; Parts in relative rotation between the limit bracket and first contact arm; An electric conductor that between the line terminal and second contact arm, extends; Arc-extinguishing unit around the first contact motion path and the parts that comprise the arc plate that separates; Between electric conductor and arc plate, be used for all electric arc is guided into from second contact arm conducting connecting part of an above-mentioned arc plate.
The current limiting circuit breaker that provides routinely comprises, the insulation crust with a line terminal and a face terminals; Install in the enclosure as open or closed terminal between the separable contact of circuit; One has the operating mechanism of runing rest and adopts manual operation so that the parts that support rotates between the open and close position; The contact support member that comprises the first and second rotary contact arms, each contact arm supports a contact, and first contact arm is rotatably connected on the support; Parts in relative rotation between the limit bracket and first contact arm; Bias component on support is in order to be advanced to first contact arm primary importance with respect to support, so that first contact arm and support can go to open and closed separable contact as a unitary rotation; An electric conductor that between the line terminal and second contact arm, extends; Arc-extinguishing unit around the first contact motion path and the parts that comprise the arc plate that separates; Between electric conductor and arc plate, be used for electric arc is guided into from second contact arm conducting connecting part of an arc plate.
Device of the present invention because electric arc is faster to the arc-chute translational speed from the starting the arc, so have can make that arc voltage is higher, current interruption better effects and if contact are ablated advantage still less.
Now, the present invention will be described with reference to the accompanying drawings with Fang Fa And for example.In the accompanying drawing:
Fig. 1 is the vertical direction sectional view of a multipole current limiting circuit breaker, and contact is in make position shown in the figure.
Fig. 2 and Fig. 3 are the partial sections of another embodiment of the invention.
Three-pole breaker 3 among Fig. 1 shows an insulation crust 5 that comprises base 7 and protecting cover 9; The protecting cover customary way for example is fixed on the base with the screw (not shown).Though principle of the present invention is applicable to single-pole circuit breaker, it also is applicable to multipole device usually; Owing to this reason, shell 5 comprises insulation barrier, uses well-known method on technology, shell be separated into three adjacent near the pole unit compartment.
In shell, the operating mechanism 11 of a circuit breaker is installed in the interpole unit of shell, and it comprises a single operating mechanism and single locking mechanism 15.Circuit breaker operation mechanism 11 also is included in an overheated release member 17 and the high speed electromagnetic release member 18 in each unit of three pole units.Typical high speed electromagnetic tripping operation parts have more intactly been described in the 4th, 220, No. 935 patent specifications of the U.S..
Each utmost point of circuit breaker all is equipped with pair of separable contact 19 and 21, and they are attached to respectively on top contact arm 20 and the bottom contact arm 22.An arc-extinguishing unit or arc chute 23 in each pole unit, have also been installed.Top contact 19, contact arm 20(makes with electric conducting material by top) Lian links terminal 26 by bus 25 And by overheated and electromagnetic trip parts 17,18 Dao And connection conductor 30 ， And connection conductor 30 on electric.
The supporting bracket 41(that single operation mechanism 11 is placed in ， And Nei the interpole unit of three-pole breaker and is supported on a pair of rigidity has a supporting bracket not shown) on, supporting bracket is fixed in the base 7 in the circuit breaker interpole unit.An inverted U-shaped joystick 43 with the end of this joystick leg, is supported on the supporting bracket 41 that certain intervals is arranged each other rotationally; And the joystick leg end portions is placed in the U-lag mouth 45 of supporting bracket 41.Joystick 43 comprises a handle 47 made from the insulating material mold pressing.
Contact arm 20 in the interpole unit is operably connected on the cradle element 51 that can throw off by means of a toggle; Toggle comprises a top crank connecting link 48 and lower crank connecting rod 49.Two crank connecting links are rotationally by means of ancon axostylus axostyle 53 and are connected to each other.Lower crank connecting rod 49 is pivotally connected on the support 34 of interpole unit by axostylus axostyle 33, and the top crank connecting link is linked on the cradle element 51 that can throw off by axostylus axostyle 55.Eccentric operating spring 57 is connected between the sweep of ancon axostylus axostyle 53 and joystick 43, is tension.
Contact 19,21 armrests are moving to move to the right side of position as shown in Figure 1 with handle 47 and opens, promptly from connecting (ON) position (Fig. 1) to disconnection (OFF) position.Handle 47 is moved to right side (moving to open position), just the position with flat heart operating spring also takes the right side to, crank connecting link 48,49 is folded And pivot link 35 in a clockwise direction, make three contact arm 20 in the pole unit turn to open position simultaneously, therefore the contact in three pole units is all opened.Contact arm 20 is dotted line position (Fig. 1) when opening.
The contact armrest is moving oppositely to move to the left side with handle and closed, also makes this moment the actuating wire of eccentric spring 57 move to the left side, and crank connecting link 48,49 is moved to position shown in Figure 1.Such action just makes connecting rod 35 rotate with counter-clockwise direction, then makes three contact arm 20 in the pole unit all turn to make position.
The cradle element 51 that can throw off, in the position shown in the figure 1 locked by means of locking mechanism 15; Locking mechanism 15 is pull bars, is not shown specifically by an electronics or heat-magnetic tripping mechanism parts 17() drive.Tripping mechanism 17 promptly can detect the short circuit current or the overload current status of low value, also can the short circuit current or the fault current state of high value be detected.According to above-mentioned various status detection, release member 17 is rotated locking mechanism or pull bar 15 clockwise directions, goes 11 tripping operations of start-up function mechanism.
According to the present invention, one of arc chute 23 bottom arc plate 24 by a connector 59(as a bolt or screw) machinery and electric on quilt linked on the line side electric conductor 27.When closing of circuit, the retrograde loop flow of fault current by forming by bottom and top contact arm 22,20, its flow direction is as shown in arrow 61,61 represent be above-mentioned from line terminal 29 to face terminals 26 circuit paths direction.
When circuit breaker trip, as by tripping mechanism 15 or " scold branch " by the top contact arm (" blown open ") reach position 20a(Fig. 1), all electric arcs all will be directed into bottom arc plate 24 between contact 19,21, extend to top contact arm 20a again from 24 electric arcs, as shown in arrow 63.Because arc plate 24 is linked on the line side electric conductor 27,, be directed into arc plate 24 so electric arc 63 is walked the path of resistance minimum.As a result, arc current path 63 just extends to line side electric conductor 27 by connector 59, has increased bypass therefore for the loop 61 of driving in the wrong direction.In a word, arc chute 23 is with customary way extinguish arcs 63.
Another embodiment of the invention as shown in Figure 2, the identical parts of identical number numbering expression among the figure.In Fig. 2, bottom arc plate 24, link on the line side electric conductor 27 by means of the connector 65 of flexibility or rigidity, 65 can be a strip shape body, cable Huo And joins conductor, as connector 59(Fig. 1), connector 65 helps to prevent that electric arc from after being directed into bottom arc plate 24, moving to bottom contact arm 22 again.
In another embodiment of the invention (Fig. 3), bottom arc plate 24 comprises a sweep 28, and it is linked plate 24 on the line side electric conductor 27.As connector 59(Fig. 1), this part 28 also prevents to move to bottom contact arm 22 again after electric arc is directed into bottom arc plate 24.
Because under the little situation of fault current, the bottom contact generally is difficult for electric arc is directed into arc chute, so connector 59,65,28 makes electric arc transfer to arc chute from the bottom contact arm, has increased bypass for the loop 61 of driving in the wrong direction.When contact 19,21 was opened, electric arc 63 was blown into arc chute 23 because the suitable effective guide plate of the effect of bottom arc plate 24 and with arc transfer to each plate of bottom of arc chute.
When beginning to break down, electric arc is transferred to arc chute from the bottom contact arm, produces magnetic field in arc chute.In case electric arc contacts with each plate of arc chute 23, it just can detect the lower path of current potential of bottom arc plate 24.For the bigger situation of fault current, the recoil of magnetic force blows into arc chute 23 with electric arc, and electric arc elongates in 23, and arc voltage increases simultaneously, and arc voltage is directly proportional with the length of electric arc.
In a word, device of the present invention can make electric arc transfer to the arc chute between contact in the little situation of fault current. Near the bottom contact arm at bottom arc plate place, can make electric arc transfer to arc plate from contact arm very, the two-fold advantage that can obtain prolonging the contact life-span He have more effective arc quenching effect.
Claims (7)
1, circuit breaker, it comprises an insulation crust with a line terminal and a face terminals; Install in the enclosure as open or closed terminal between the separable contact of circuit; One has the operating mechanism of runing rest and adopts manual operation so that the parts that support rotates between the open and close position; The contact support member that comprises the first and second rotary contact arms, each contact arm supports a contact, and first contact arm is rotatably connected on the support; Parts in relative rotation between the limit bracket and first contact arm; An electric conductor that between the line terminal and second contact arm, extends; Arc-extinguishing unit around the first contact motion path and comprise the parts of the arc plate that separates is used for all electric arc is guided into from second contact arm conducting connecting part of an above-mentioned arc plate between electric conductor and electric arc baffle.
2, a desired circuit breaker in the claim 1, wherein, on support, install bias component, in order to first contact arm is advanced to primary importance with respect to support, so that first contact arm and support can go to open and the closed contact that separates as a unitary rotation.
3, a desired circuit breaker in the claim 2, wherein, arc plate comprise some when contact closure the plates and the plates of contiguous second contact arm not in addition of contiguous second contact arm, and the conducting connecting part that between electric conductor and adjoining plate, extends.
4, a desired circuit breaker in the claim 3, wherein, second contact arm is installed in the plane of adjoining plate.
5, a desired circuit breaker in the claim 4, wherein, electric conductor is installed in the Ce ， And of second contact arm on the first contact arm opposite and connector and extends between electric conductor and nearest plate.
6, a desired circuit breaker in the claim 5, wherein, connector can be a hard parts, also can be a flexible part.
7, circuit breaker, its structure and application explanation as indicated above basically and that done with reference to the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75539785A | 1985-07-12 | 1985-07-12 | |
| US755,397 | 1985-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86104588A true CN86104588A (en) | 1987-01-14 |
Family
ID=25038965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198686104588A Pending CN86104588A (en) | 1985-07-12 | 1986-07-11 | Current limiting circuit breaker with arc commutating structure |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0208295A3 (en) |
| JP (1) | JPS6215726A (en) |
| KR (1) | KR870001619A (en) |
| CN (1) | CN86104588A (en) |
| AU (1) | AU5922286A (en) |
| BR (1) | BR8603261A (en) |
| ES (1) | ES8800507A1 (en) |
| MX (1) | MX168027B (en) |
| ZA (1) | ZA864739B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222578A (en) * | 2010-04-16 | 2011-10-19 | Abb技术有限公司 | Switch unit and circuit breaker for a medium voltage circuit |
| CN105575739A (en) * | 2016-03-16 | 2016-05-11 | 安徽灿邦电气有限公司 | DC molded case circuit breaker with electronic release |
| CN109559947A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of multipole circuit breaker |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583571B1 (en) * | 1985-06-12 | 1994-02-18 | Merlin Et Gerin | LOW VOLTAGE CIRCUIT BREAKER WITH IMPROVED CUT. |
| JP2894052B2 (en) * | 1990-12-11 | 1999-05-24 | 株式会社日立製作所 | Circuit breaker |
| KR20020053151A (en) * | 2000-12-27 | 2002-07-05 | 최정욱 | making method & composition for green seaweed mixture brown seaweed |
| KR20230174837A (en) | 2022-06-22 | 2023-12-29 | 박대롱 | Manufacturing apparatus for processed food of laver shape using sea mustard or sea tangle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2719203A (en) * | 1952-05-02 | 1955-09-27 | Westinghouse Electric Corp | Circuit breakers |
| US2769066A (en) * | 1953-02-02 | 1956-10-30 | Westinghouse Electric Corp | Circuit interrupters |
| DE1966598C3 (en) * | 1969-01-31 | 1981-03-19 | Westermayer, Joseph, Dipl.-Ing., 8500 Nürnberg | Small electrical circuit breaker with switching mechanism and arc chamber |
| BE772520A (en) * | 1971-09-13 | 1972-01-17 | Vynckier Belg Werkhuizen | STROOMONDERBREKING ONLY. |
| BE791473A (en) * | 1971-12-02 | 1973-03-16 | Legrand Sa | CIRCUIT BREAKER |
| JPS6049536A (en) * | 1983-08-26 | 1985-03-18 | 三菱電機株式会社 | Circuit breaker |
-
1986
- 1986-06-25 AU AU59222/86A patent/AU5922286A/en not_active Abandoned
- 1986-06-25 ZA ZA864739A patent/ZA864739B/en unknown
- 1986-06-25 ES ES556827A patent/ES8800507A1/en not_active Expired
- 1986-07-08 KR KR1019860005486A patent/KR870001619A/en not_active Application Discontinuation
- 1986-07-08 EP EP86109302A patent/EP0208295A3/en not_active Withdrawn
- 1986-07-10 JP JP61163532A patent/JPS6215726A/en active Pending
- 1986-07-10 MX MX003082A patent/MX168027B/en unknown
- 1986-07-11 BR BR8603261A patent/BR8603261A/en unknown
- 1986-07-11 CN CN198686104588A patent/CN86104588A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222578A (en) * | 2010-04-16 | 2011-10-19 | Abb技术有限公司 | Switch unit and circuit breaker for a medium voltage circuit |
| CN102222578B (en) * | 2010-04-16 | 2016-04-06 | Abb技术有限公司 | For switch element and the circuit breaker of middle volt circuit |
| CN105575739A (en) * | 2016-03-16 | 2016-05-11 | 安徽灿邦电气有限公司 | DC molded case circuit breaker with electronic release |
| CN109559947A (en) * | 2017-09-27 | 2019-04-02 | 常熟开关制造有限公司(原常熟开关厂） | A kind of multipole circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR870001619A (en) | 1987-03-17 |
| ES8800507A1 (en) | 1987-11-01 |
| ZA864739B (en) | 1987-02-25 |
| AU5922286A (en) | 1987-01-15 |
| BR8603261A (en) | 1987-02-24 |
| JPS6215726A (en) | 1987-01-24 |
| ES556827A0 (en) | 1987-11-01 |
| MX168027B (en) | 1993-04-29 |
| EP0208295A3 (en) | 1988-01-20 |
| EP0208295A2 (en) | 1987-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |