CN1327465C - Electrial switch device - Google Patents
Electrial switch device Download PDFInfo
- Publication number
- CN1327465C CN1327465C CNB038007525A CN03800752A CN1327465C CN 1327465 C CN1327465 C CN 1327465C CN B038007525 A CNB038007525 A CN B038007525A CN 03800752 A CN03800752 A CN 03800752A CN 1327465 C CN1327465 C CN 1327465C
- Authority
- CN
- China
- Prior art keywords
- resistance body
- parallel
- resistance
- contact point
- current
- 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 - Fee Related
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Classifications
-
- 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
- H01H71/10—Operating or release mechanisms
- H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
-
- 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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Thermally Actuated Switches (AREA)
- Emergency Protection Circuit Devices (AREA)
- Relay Circuits (AREA)
- Saccharide Compounds (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Glass Compositions (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to an electrical switching device comprising a first contact point (11) which can be shifted by an electromagnetic actuator into an open position in the event of a short circuit; a second contact point (19) which is mounted in series with the first contact point and is opened, and maintained in an open state, by a first thermal circuit breaker by means of a switch latch; and a parallel current path (15) which is arranged parallel to the first contact point (11), and in which a current-limiting resistance (16) is arranged. The current-limiting resistance (16) is embodied as a resistance body consisting of doped ceramic material having a temperature coefficient which is constant or negative.
Description
Technical field
The present invention relates to electric switchgear, particularly, the present invention relates to a kind of electric switchgear with first make contact, second contact point and parallel-current path, this first make contact moves to open position by electromagnetic actuators under short-circuit conditions, this second contact point and this first make contact are connected in series, and opened lastingly by switching mechanism by hot releasing device, this parallel-current path and first make contact are arranged in parallel, and wherein hold current-limiting resistance.
Background technology
Such circuit breaker is open in DE 28 54 711, and this circuit breaker has first make contact, and the parallel-current path with current-limiting resistance is connected to this first make contact.
Such device is also by ABB Stotz-Kontakt GmbH, and Heidelberg develops, and form is the S700 main circuit breaker.Resistance form in this case is a resistance wire, is for example made by CrAl255, Cu or other alloy, and this resistance wire is wound in coil, because the shape and the desired resistance value of this coil, this coil occupies big relatively physical space.And the resistance of such coil form produces high-intensity magnetic field, and coil must twine on the contrary and in parallel as a result, and is so complicated.When using bare wire, coil need be wrapped on the resistant to elevated temperatures bobbin, so that prevent that winding attracts each other when applying electric current, thereby prevents to cause short-circuited winding.If the resistance wire insulation, the expensive material of the difficult treatment such as glass fiber is used as insulation component so.
Summary of the invention
The circuit breaker that the purpose of this invention is to provide the type of mentioning at first uses this circuit breaker can avoid the shortcoming of known devices.
According to the present invention, in order to realize this purpose, a kind of first make contact that has is provided, the electric switchgear of second contact point and parallel-current path, this first make contact moves to open position by electromagnetic actuators under short-circuit conditions, this second contact point and this first make contact are connected in series, and open lastingly by switching mechanism by hot releasing device, this parallel-current path and first make contact are arranged in parallel, and wherein hold current-limiting resistance, it is characterized in that: this current-limiting resistance is the form of resistance body, and this resistance body is made by the doped ceramic material with constant or negative temperature coefficient.
Therefore, according to the present invention, the resistance body of being made by the pottery of the doping with constant or negative temperature coefficient is arranged in current path in parallel, being connected with first make contact of the current path parallel connection that this is in parallel.
This has been avoided using the resistance wire of the coil form with its all shortcomings, and this resistance body also needs the less space in the switching device.
The resistance material that is used to form this resistance body can have been bought on market, and is made by the mixture of clay, aluminium and carbon, in case this resistance material is pressed into its net shape, it experiences sintering process.
If this circuit-breaker is provided with the shell that comprises two shell half ones, this shell half one has the band that extends perpendicular to wide inner surface so, in case and this shell half one combine, these bands limit the zone that holds and keep resistance body.
Preferably use spring contacts to form contact.
Other favourable improvement of the present invention and raising are described hereinafter.
Description of drawings
By illustrating in greater detail and describe the present invention and more advantageous embodiment with reference to the accompanying drawings, and improve and more advantage, these description of drawings typical embodiment of the present invention, wherein:
Fig. 1 shows the view of circuit-breaker;
Fig. 2 shows along the cutaway view of hatching II-II;
Fig. 3 and 4 shows two kinds of selection schemes that contact with resistance body; And
Fig. 5 shows the circuit diagram of this switching device.
Embodiment
Circuit-breaker has shell 10, and it can be formed by the outer casing underpart and the lid of hull shape formula, is perhaps formed by two approximately equalised shell half ones.Have fixed contact piece 12 and movably the first make contact 11 of contact chip 13 be positioned at the inside of shell 10.When short circuit current occurring, the removable contact chip 13 that is arranged on the contact lever 14 that can pivot is pivoted by electromagnet, causes that contact point 11 opens.This contact point 11 has relevant parallel-current path 15, and resistance body 16 is arranged in this current path in parallel.When contact point 11 is opened, form electric arc at this, this electric arc enters arc splitter group 17.And electric current commutation enters second current path 15, and by the resistance limits of resistance body 16.
The equivalent electric circuit of this switching device shows in Fig. 5.The first make contact 11 and second contact point 19 are arranged in main current path 18.Parallel-current path 15 is connected in parallel with first make contact 11, and resistance body 16 is arranged in the current path 15.The optionally bimetallic band 20 and the resistance body 16 that do not show in Fig. 1 are electrically connected in series, and act on the switching mechanism 21 that shows among Fig. 1, are provided with or hinged switch trigger 22 on this switching mechanism 21.The bimetallic band 36 of another that shows in Fig. 1 is arranged in main current path 18 equally.This bimetallic band same purpose is on switching mechanism 21, and this switching mechanism 21 is connected to contact point 19 by position 23.
The position of bimetallic band 20,36 on switching mechanism is by shown in label 24 and 25.
Fig. 2 shows cutaway view along hatching II-II.Shell 10 is in this case by the outer casing underpart 10a of the form of taking shell with take the top 10b of the form of shell to make, band 26,27; 28,29 is integrally formed on these shells respectively, as Fig. 1 also as seen.Band 26 to 29 forms zone 30, and resistance body 16 holds wherein.
Contact with resistance body 16 with 32 by flat ribbon conductor 31, these flat ribbon conductors form the parallel-current path, and illustrate in greater detail in Fig. 3 and 4.
In the embodiment shown in fig. 3, the form of conductor 31 is straight parts, and conductor 32 has the portion's section 33 with respect to contact-making surface 16a projection in the zone of the contact-making surface 16a of resistance body 16.
In the embodiment shown in fig. 4, replace straight conductor 31, use has towards the conductor 31a of the section 33a of portion of the contact-making surface 16b protrusion of resistance body 16.
In two conductor pieces 31,32 at least one is flexible.In the embodiment shown in fig. 3, conductor 32 is flexible, and in the embodiment shown in fig. 4, conductor 31a also is flexible.
As shown in Figure 1, conductor 32 can be shaped as and makes it fix resistance body 16 with elbow 34 and edge or angled portion 35.
As mentioned above, the material that uses in this case has approximately constant or negative a little temperature coefficient.Such reason is described as follows:
If circuit breaker shown in Figure 5 is intended to disconnect short circuit current, at first contact point 11 is accurately opened by line effect 41 by magnetic releasing device 40.Under these circumstances, electric current commutates to the parallel-current path then, and by resistance body 16 restrictions, contact point 19 remains closed.Electric current by resistance 16 restrictions flows through coil 40, and keeps in touch so a little and 11 open.If short circuit current breaks in downstream circuit breaker, short circuit current disconnects so, contact point 11 closures.If electric current does not disconnect, bimetallic band 20 or 22 is heated, and finally disconnects contact point 19 by this way.This paper is with reference to the DE 28 54 711 that mentions at the beginning, and the S700 circuit breaker of mentioning at the beginning.
If resistance body 16 has positive temperature coefficient now, electric current can be limited to such degree so, makes the armature cut-out and the contact point 11 of releasing device 40 close, and this does not expect.Since approximately constant or negative temperature coefficient, the identical or increase a little by the electric current maintenance of releasing device 40, the result, contact point can keep the sufficiently long time in the position of opening.
Mentioned, this resistance body can be made by the pottery that is doped with carbon.Can also use the carborundum that is doped with carbon.And resistance body 16 can also be doped with other electric conducting material.In addition, as required, resistance body can have any desired shape, for example cylindricality, hollow cylindrical, cube or prismatic.
Should furthermore be mentioned that if the end face of resistance body 16 is metallized, conductor piece 31 and 32 can directly weld so.
Claims (5)
1. one kind has first make contact (11), the electric switchgear of second contact point (19) and parallel-current path (15), this first make contact moves to open position by electromagnetic actuators under short-circuit conditions, this second contact point and this first make contact are connected in series, and open lastingly by switching mechanism by hot releasing device, this parallel-current path and first make contact (11) are arranged in parallel, and wherein hold current-limiting resistance (16), it is characterized in that: this current-limiting resistance (16) is the form of resistance body, and this resistance body is made by the doped ceramic material with constant or negative temperature coefficient.
2. electric switchgear according to claim 1 is characterized in that: the band that extends perpendicular to inner surface is integrally formed on wide the inner surface of shell, in case shell is assembled, these bands just define the zone that holds and keep resistance body.
3. according to each described electric switchgear in the aforementioned claim, it is characterized in that: at least one conductor piece presses resistance body in flexible mode, and resistance body (16) is connected in the parallel-current path (15) by this conductor piece.
4. electric switchgear according to claim 3 is characterized in that: this resistance body (16) has metallized end face, and this conductor piece is welded on this end face.
5. electric switchgear according to claim 1 is characterized in that: this resistance body (16) is solid cylindricality, a hollow cylindrical of taking cube or prismatic form.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10203443.5 | 2002-01-30 | ||
| DE10203443A DE10203443A1 (en) | 2002-01-30 | 2002-01-30 | Electrical switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1537316A CN1537316A (en) | 2004-10-13 |
| CN1327465C true CN1327465C (en) | 2007-07-18 |
Family
ID=7713329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038007525A Expired - Fee Related CN1327465C (en) | 2002-01-30 | 2003-01-09 | Electrial switch device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1470565B1 (en) |
| CN (1) | CN1327465C (en) |
| AT (1) | ATE323324T1 (en) |
| DE (3) | DE10261994A1 (en) |
| PL (1) | PL200064B1 (en) |
| WO (1) | WO2003065398A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10354505B4 (en) * | 2003-11-21 | 2006-01-12 | Eti Elektroelement D.D. | Electric auto switch |
| DE102004019178A1 (en) * | 2004-04-16 | 2005-11-03 | Abb Patent Gmbh | Service switching device |
| DE102004019175A1 (en) * | 2004-04-16 | 2005-11-03 | Abb Patent Gmbh | Service switching device |
| DE102006037234A1 (en) * | 2006-08-09 | 2008-02-14 | Siemens Ag | Switch-gear unit e.g. for selective switch-off of consumer load, has actuating element for opening contact point in principal conduction line |
| DE102007004092A1 (en) | 2007-01-26 | 2008-08-07 | Siemens Ag | Circuit breaker for use in cascaded switching arrangement, has register arranged such that register does not directly and indirectly affect switching element when branch is parallely connected to another switching element |
| EP1981055A1 (en) | 2007-04-13 | 2008-10-15 | Abb Ag | Installation switch and electricity meter system |
| DE102008017932A1 (en) | 2007-04-13 | 2008-10-16 | Abb Ag | Installation switch e.g. selective main line safety switch, for electric meter system, has switchgear, where base current cut-off takes place in operating mode upon reaching base current strength, which is lower than rated current strength |
| EP2223321B1 (en) * | 2007-12-24 | 2015-07-01 | Eti Elektroelement D.D. | Electric automatic switch |
| DE102008038244B4 (en) | 2008-08-18 | 2016-09-29 | Hager Electro S.A.S. | Selective release for main circuit breaker |
| DE102009036227B4 (en) | 2009-08-05 | 2015-02-05 | Abb Ag | Electrical resistance, process for its manufacture and electrical switching installation device |
| DE102011008078A1 (en) | 2011-01-08 | 2012-07-12 | Peter Flohr | Main circuit breaker has thermal trigger whose longitudinal axis is perpendicular to attachment plane of switching device and longitudinal axis of magnetic trip |
| DE102012023914A1 (en) | 2012-12-06 | 2014-06-12 | Peter Flohr | Central locking and unlocking main circuit breaker e.g. SH-switch has housing that comprises electromagnet that is activated by codable switching electronic unit |
| DE102014001997B4 (en) | 2014-02-17 | 2020-01-09 | Abb Ag | Auxiliary switch with test button |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854711A1 (en) * | 1978-12-18 | 1980-07-03 | Bbc Brown Boveri & Cie | Selective safety cut=out system for complex supply networks - has main fuse preceding parallel lines with bimetallic elements with current diversion |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE467116A (en) * | 1945-08-07 | |||
| DE947813C (en) * | 1952-11-13 | 1956-08-23 | Licentia Gmbh | Fuse for triggering switches |
| DE2854616C2 (en) * | 1978-12-18 | 1984-03-22 | Brown, Boveri & Cie Ag, 6800 Mannheim | Selective protection device |
| DE3021867A1 (en) * | 1980-06-11 | 1981-12-17 | Brown, Boveri & Cie Ag, 6800 Mannheim | SELF-SWITCH |
| DE4221309A1 (en) * | 1992-06-29 | 1994-01-05 | Abb Research Ltd | Current limiting element |
| DE19500125A1 (en) * | 1995-01-04 | 1996-07-11 | Licentia Gmbh | Positive temperature characteristic current limiter |
| DE19651298C2 (en) * | 1996-12-10 | 1999-04-01 | Fein C & E | Series motor with commutator and brake winding |
| DE29918351U1 (en) * | 1999-10-18 | 2000-02-10 | Chern, Der-Luh, Chung-Ho, Taipeh | Lightning protection device for an electrical device |
-
2002
- 2002-01-30 DE DE10261994A patent/DE10261994A1/en not_active Withdrawn
- 2002-01-30 DE DE10203443A patent/DE10203443A1/en not_active Withdrawn
-
2003
- 2003-01-09 WO PCT/EP2003/000121 patent/WO2003065398A1/en active IP Right Grant
- 2003-01-09 EP EP03702406A patent/EP1470565B1/en not_active Expired - Lifetime
- 2003-01-09 AT AT03702406T patent/ATE323324T1/en not_active IP Right Cessation
- 2003-01-09 PL PL369824A patent/PL200064B1/en not_active IP Right Cessation
- 2003-01-09 DE DE50302958T patent/DE50302958D1/en not_active Expired - Lifetime
- 2003-01-09 CN CNB038007525A patent/CN1327465C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854711A1 (en) * | 1978-12-18 | 1980-07-03 | Bbc Brown Boveri & Cie | Selective safety cut=out system for complex supply networks - has main fuse preceding parallel lines with bimetallic elements with current diversion |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50302958D1 (en) | 2006-05-24 |
| DE10261994A1 (en) | 2004-02-05 |
| PL369824A1 (en) | 2005-05-02 |
| CN1537316A (en) | 2004-10-13 |
| EP1470565A1 (en) | 2004-10-27 |
| WO2003065398A1 (en) | 2003-08-07 |
| DE10203443A1 (en) | 2003-07-31 |
| PL200064B1 (en) | 2008-12-31 |
| EP1470565B1 (en) | 2006-04-12 |
| ATE323324T1 (en) | 2006-04-15 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20150109 |
|
| EXPY | Termination of patent right or utility model |