CN101490784A - Adjustable short-circuit release - Google Patents
Adjustable short-circuit release Download PDFInfo
- Publication number
- CN101490784A CN101490784A CNA2007800272292A CN200780027229A CN101490784A CN 101490784 A CN101490784 A CN 101490784A CN A2007800272292 A CNA2007800272292 A CN A2007800272292A CN 200780027229 A CN200780027229 A CN 200780027229A CN 101490784 A CN101490784 A CN 101490784A
- Authority
- CN
- China
- Prior art keywords
- armature
- overcurrent trip
- compression spring
- electrode
- press
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
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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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- 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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7409—Interchangeable elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/002—Legends replaceable; adaptable
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention relates to an overcurrent release with a yoke, with a coil winding, with a pole, with an armature and with a restraining spring for pre-stressing the armature, wherein an air gap exists between the pole and the armature. The invention is based on the object of specifying an overcurrent release with low force tolerances for the restraining spring, whose response value can be adjusted retrospectively and a circuit breaker with such an overcurrent release. This object is achieved in the case of an overcurrent release of the type mentioned at the outset by virtue of the fact that the restraining spring is in the form of a compression spring provided between the pole and the armature and that the overcurrent release is designed such that the compression spring is replaceable. Compression springs can be produced with lower force tolerances than torsion springs, as a result of which, also advantageously within the permissible tolerance in accordance with IEC60947 of +-20%, the response current can be reduced to, for example, 13 times the rated current minus 20%. Furthermore, compression springs do not have any friction between the turns and do not have as unfavourable friction as a torsion spring mounting arrangement. In addition, the replaceablity of the compression springs makes it possible to shift the response value of the overcurrent release on the finished overcurrent release or finished device retrospectively and easily.
Description
Technical field
The present invention relates to a kind of overcurrent trip, this overcurrent trip has yoke, coil windings, electrode, armature and is used for the relief spring of the described armature of pre-tensioning, wherein has air gap between described electrode and armature.
Background technology
A kind of device of described type is used on the non-overcurrent trip of delaying, and is used for power switch that motor and other customer are carried out switch and protection as its known being used in.These non-overcurrent trips of delaying are designed to the release of electromagnetism, and the release of described electromagnetism mainly comprises coil windings, bobbin, armature, electrode, push rod, relief spring and yoke.Described armature under the specific mensuration electric current of described power switch such as in motor protection, under 19 times of rated current, attracting under 13 times of rated current or in tranformer protection.Armature movement acts on the latching device and acts on the movable contact at this, is used for break contact.According to standard (IEC60947), operating current allows the fluctuation of maximum ± 20% in this case.
Difficulty in bigger adjustable range is, because the bigger tolerance of needed bigger supporting cross section, littler wire turn number, coil and winding wire and by its more uneven magnetic field that causes, make coil windings carry out enough accurate localization, so that can observe insensitive scope by standard about the air gap between described armature and electrode.Exist in addition the fluctuation that causes because of component tolerance of armature-electrode-spacing and the fluctuation that causes because of the spring tolerance of described relief spring are remained on this problem on the enough little degree.When design power construction of switch size big or small, be starting point with the electric current of maximum fluidity for the contact load of described latching device and breakaway.For structure, this point means, must corresponding powerful spring be installed and all parts must bear active force.
Disclose a kind of overcurrent trip from EP 1 105 900 B1, in this overcurrent trip, coil windings can in axial direction be positioned between described coil windings and the yoke by the calibration circle.
A kind of quick release that is used for the magnetic of overcurrent switch is disclosed in CH 264437 A, can be in this quick release by means of in certain scope, changing tripping force for the adjustment screw in the screwed hole support setting, that be in magnetic core of armature spring.
Such as the physical dimension from Siemens is the power switch SIRIUS 3RV of S2, also known a kind of be in the bobbin outside, as the application of the torsionspring of relief spring, this relief spring can change or can by means of grid (Raster) change extension (
).But, torsionspring only can be made and has a disadvantageous friction that causes because of torsionspring-supporting with bigger power tolerance.
Summary of the invention
Task of the present invention is, a kind of overcurrent trip and a kind of power switch with described overcurrent trip with small relief spring power tolerance is described, wherein can adjust the operating value of described relief spring afterwards.
This task is resolved in the overcurrent trip of the described type of beginning by the following method, be that described relief spring is configured to be arranged on the compression spring between described electrode and the armature, and so construct described overcurrent trip, make described compression spring to change, wherein said electrode can be fixed on the connector by means of screw thread or bayonet coupling for changing described compression spring.
Compression spring can be made with the power tolerance littler than torsionspring, thus also can be in an advantageous manner according to IEC60947 allowed ± rated current that described operating current narrowed down to such as 13 times in 20% the tolerance deducts 20%.In addition, described compression spring not friction and the not disadvantageous friction as torsionspring-supporting between wire turn.In addition, by the convertibility of described compression spring, later on can be easily move the operating value of described overcurrent trip in other words on the equipment of finished product at the overcurrent trip of finished product.
For this reason, in a kind of favourable execution mode, described compression spring can be installed and from dismantling with the opposed side of described first side from first side of described overcurrent trip.
In other favourable execution mode, described electrode and/or armature have projection corresponding to the interior diameter of compression spring in the side towards compression spring, and this projection is used to support described compression spring.
In other favourable execution mode, described coil windings be arranged on the bobbin and described structure of magnetic yoke for two members.
In other favourable execution mode, described bobbin is made of plastics and has the profile that is used for fixing described electrode, and this electrode can not unclamp thus.Described profile is used to prevent such as the loosening of electrode when vibrating thus or screws out.
In other favourable execution mode, described electrode has bar portion and spiral head and can so be fixed on the connector, makes described spiral head be connected on the described connector in the state of tightening with flushing.Thus except such as also guaranteeing by simply screwing the simple operations of carrying out when changing compression spring, described armature-electrode-spacing does not produce fluctuation because of changing operation, because described electrode extend into the identical degree of depth all the time by the termination that flushes in bobbin always.
Description of drawings
The present invention is described in detail and explanation by means of embodiment illustrated in the accompanying drawings below.Wherein:
Fig. 1 is the exploded view that is used for the overcurrent trip of power switch, and
Fig. 2 is the confined state of the overcurrent trip of Fig. 1.
Embodiment
Fig. 1 shows the exploded view of the critical piece of overcurrent trip, and this overcurrent trip is used for power switch that motor and other customer are carried out switch and protection.This overcurrent trip comprises coil windings 1, electrode 2, armature 3, compression spring 5 and connector 7 on the bobbin 6 at this.Described bobbin 6 and bearing element 9 constitute one.Be essentially that Z-shaped yoke constitutes integratedly and corresponding to described connector 7.In addition, assembling bolt 8 is used to make described two parts 7 and 9 relative to each other to position.Described compression spring 5 is between electrode 2 and the armature 3 in the inside of described bobbin 6 in confined state.Described armature 3 has projection 4 corresponding to the interior diameter of described compression spring 5 in the side towards compression spring 5, and this projection 4 is surrounded by described compression spring 5 under confined state.Described electrode 2 can be fixed on the described connector 7 by means of screw thread, makes described compression spring 5 also can easily change by screwing off electrode 2 in the equipment of finished product, can change the operating value of described overcurrent trip thus.For this purpose, the hole of the electrode side of described bobbin 6 is used for changing compression spring even as big as pulling down compression spring 5.In addition, the hole of the electrode side of described bobbin 6 has a kind of special profile and is used for fixing described electrode 2, and this profile for example (extraly) is used to prevent that electrode 2 from screwing out when vibration, thereby this electrode 2 can not unclamp.
Fig. 2 shows the confined state of the overcurrent trip of Fig. 1, and wherein said coil windings 1 is arranged on the described bobbin 6.Described armature 3, electrode 2 and compression spring 5 are in the cavity of described columniform bobbin 6.
In a word, the present invention relates to a kind of overcurrent trip, this overcurrent trip has yoke, coil windings, electrode, armature and is used for the relief spring of the described armature of pre-tensioning, wherein has air gap between described electrode and armature.Task of the present invention is, a kind of overcurrent trip and a kind of power switch with described overcurrent trip with small relief spring power tolerance is described, wherein can adjust the operating value of described relief spring afterwards.This task is resolved on the overcurrent trip of the described type of beginning by the following method, be that described relief spring is configured to be arranged on the compression spring between described electrode and the armature, and so construct described overcurrent trip, make described compression spring to change.Compression spring can be made with the power tolerance littler than torsionspring, thus also can be in an advantageous manner according to IEC60947 allowed ± rated current that operating current narrowed down to such as 13 times within 20% the tolerance deducts 20%.In addition, described compression spring not friction and the not disadvantageous friction as torsionspring-supporting between wire turn.In addition, can be easily after the convertibility by described compression spring move the operating value of described overcurrent trip in other words on the equipment of finished product at the overcurrent trip of finished product.
Claims (11)
1. overcurrent trip has yoke, coil windings (1), electrode (2), armature (3) and is used for the relief spring (5) of the described armature of pre-tensioning (3), wherein has air gap between described electrode (2) and armature (3),
It is characterized in that,
Described relief spring (5) is configured to be arranged on the compression spring (5) between described electrode (2) and the armature (3), and construct described overcurrent trip, make described compression spring (5) to change, wherein said electrode (2) can be fixed on the described connector (7) by means of screw thread or bayonet coupling for changing described compression spring (5).
2. press the described overcurrent trip of claim 1,
Wherein, described compression spring (5) can from first side of described overcurrent trip install and this external enwergy from dismantling with the opposed side of described first side.
3. press claim 1 or 2 described overcurrent trips,
Wherein, described armature (3) has projection (4) corresponding to the interior diameter of this compression spring (5) in the side towards compression spring (5).
4. press each described overcurrent trip in the aforementioned claim,
Wherein, described electrode (2) has projection corresponding to the interior diameter of this compression spring (5) in the side towards compression spring (5).
5. press each described overcurrent trip in the aforementioned claim,
Wherein, described coil windings (1) is arranged on the bobbin (6).
6. press each described overcurrent trip in the aforementioned claim,
Wherein, described structure of magnetic yoke is two members.
7. press each described overcurrent trip in the aforementioned claim,
Wherein, described bobbin (6) has the profile that is used for fixing described electrode (2).
8. press each described overcurrent trip in the aforementioned claim,
Wherein, described bobbin (6) is made of plastics.
9. press each described overcurrent trip in the aforementioned claim,
Wherein, described electrode (2) has bar portion and spiral head.
10. press the described overcurrent trip of claim 9,
Wherein, described electrode (2) can be fixed on the connector (7), makes described spiral head be connected on the described connector (7) in the state of tightening with flushing.
11. have at least one power switch by each described overcurrent trip in the claim 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006033717.4 | 2006-07-20 | ||
| DE102006033717A DE102006033717B4 (en) | 2006-07-20 | 2006-07-20 | Adjustable short-circuit release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101490784A true CN101490784A (en) | 2009-07-22 |
Family
ID=38473005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800272292A Pending CN101490784A (en) | 2006-07-20 | 2007-07-11 | Adjustable short-circuit release |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2044605B1 (en) |
| KR (1) | KR100994066B1 (en) |
| CN (1) | CN101490784A (en) |
| AT (1) | ATE503264T1 (en) |
| BR (1) | BRPI0711126A2 (en) |
| DE (2) | DE102006033717B4 (en) |
| WO (1) | WO2008009594A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337422A (en) * | 2013-06-21 | 2013-10-02 | 浙江电器开关有限公司 | Tripping device of moulded case circuit breaker |
| CN111326954A (en) * | 2020-03-03 | 2020-06-23 | 山东睿控电气有限公司 | Follow current-free ceramic discharge tube with tripping function and surge protector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20081092A1 (en) * | 2008-06-17 | 2009-12-18 | Gewiss Spa | CONTROL DEVICE FOR AUTOMATIC RESET EQUIPMENT |
| KR101895264B1 (en) * | 2018-04-17 | 2018-09-05 | 제일전기공업 주식회사 | circuit breaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1007018A (en) * | 1948-02-13 | 1952-04-30 | Elektrotechnische Spezialfabri | Quick adjustable magnetic trip unit for maximum circuit breakers |
| US4963848A (en) * | 1989-03-31 | 1990-10-16 | Square D Company | Non-jamming magnetic trip structure |
| EP1105900B1 (en) * | 1998-08-14 | 2002-10-30 | Siemens Aktiengesellschaft | Device with axially positionable coil winding |
| US6404314B1 (en) * | 2000-02-29 | 2002-06-11 | General Electric Company | Adjustable trip solenoid |
-
2006
- 2006-07-20 DE DE102006033717A patent/DE102006033717B4/en not_active Expired - Fee Related
-
2007
- 2007-07-11 CN CNA2007800272292A patent/CN101490784A/en active Pending
- 2007-07-11 BR BRPI0711126-6A patent/BRPI0711126A2/en not_active IP Right Cessation
- 2007-07-11 WO PCT/EP2007/057070 patent/WO2008009594A1/en active Application Filing
- 2007-07-11 AT AT07787344T patent/ATE503264T1/en active
- 2007-07-11 EP EP07787344A patent/EP2044605B1/en not_active Not-in-force
- 2007-07-11 DE DE502007006788T patent/DE502007006788D1/en active Active
- 2007-07-11 KR KR1020087013195A patent/KR100994066B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337422A (en) * | 2013-06-21 | 2013-10-02 | 浙江电器开关有限公司 | Tripping device of moulded case circuit breaker |
| CN103337422B (en) * | 2013-06-21 | 2015-04-22 | 浙江电器开关有限公司 | Tripping device of moulded case circuit breaker |
| CN111326954A (en) * | 2020-03-03 | 2020-06-23 | 山东睿控电气有限公司 | Follow current-free ceramic discharge tube with tripping function and surge protector |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502007006788D1 (en) | 2011-05-05 |
| EP2044605A1 (en) | 2009-04-08 |
| DE102006033717A1 (en) | 2008-01-31 |
| KR20080095839A (en) | 2008-10-29 |
| WO2008009594A1 (en) | 2008-01-24 |
| ATE503264T1 (en) | 2011-04-15 |
| EP2044605B1 (en) | 2011-03-23 |
| BRPI0711126A2 (en) | 2011-08-30 |
| KR100994066B1 (en) | 2010-11-11 |
| DE102006033717B4 (en) | 2009-06-04 |
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