WO2008009594A1 - Déclencheur à court-circuit réglable - Google Patents

Déclencheur à court-circuit réglable Download PDF

Info

Publication number
WO2008009594A1
WO2008009594A1 PCT/EP2007/057070 EP2007057070W WO2008009594A1 WO 2008009594 A1 WO2008009594 A1 WO 2008009594A1 EP 2007057070 W EP2007057070 W EP 2007057070W WO 2008009594 A1 WO2008009594 A1 WO 2008009594A1
Authority
WO
WIPO (PCT)
Prior art keywords
overcurrent release
pole
armature
spring
compression spring
Prior art date
Application number
PCT/EP2007/057070
Other languages
German (de)
English (en)
Inventor
Rudolf GRÄFENHAHN
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to AT07787344T priority Critical patent/ATE503264T1/de
Priority to BRPI0711126-6A priority patent/BRPI0711126A2/pt
Priority to DE502007006788T priority patent/DE502007006788D1/de
Priority to EP07787344A priority patent/EP2044605B1/fr
Publication of WO2008009594A1 publication Critical patent/WO2008009594A1/fr

Links

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
    • 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

Definitions

  • the invention relates to an overcurrent release with a
  • Yoke with a coil winding, with a pole, with an armature and with a retaining spring for biasing the armature, wherein there is an air gap between the pole and the armature.
  • a generic device is used with instantaneous overcurrent releases, as they are known to be used in Lei ⁇ tion switches for switching and protecting motors and other consumers.
  • These instantaneous overcurrent releases are designed as electromagnetic triggers, essentially a coil winding, a
  • Coil body an armature, a pole, a plunger, a retaining spring and a yoke include.
  • the armature attracts at a certain rated current of the circuit breaker, eg at thirteen times the rated current for motor protection or at 19 times the rated current for transformer protection.
  • the armature movement acts on a switching mechanism and on a movable switching ⁇ piece to open the contacts. According to standard (IEC60947), the operating current must fluctuate a maximum of ⁇ 20%.
  • the difficulty is because of the required larger support cross-sections, smaller numbers of turns, larger tolerances of the coil and the winding wire and the associated inhomogeneren magneti ⁇ 's magnetic field, the coil winding to position the air gap between the armature and the pole sufficiently accurate, there ⁇ can be complied with the response limits according to standard.
  • a magnetic quick release for overcurrent switch is disclosed in which by means of a provided for supporting the armature spring screw, which is located in a threaded bore of the magnetic core, the release force can be changed within a certain range.
  • the invention has for its object to provide an overcurrent release with low force tolerances for the retaining spring whose response can be adjusted later, as well as a circuit breaker with such an overcurrent release.
  • compression springs can be produced with smaller force tolerances than torsion springs, which can also advantageously reduce the response current within the permissible tolerance according to IEC60947 by ⁇ 20% to eg 13 times the nominal current minus 20%.
  • compression springs have no friction between the turns and no as unfavorable friction as a torsion spring bearing.
  • a slight subsequent shift of the response value of the overcurrent release on the finished overcurrent release or finished device is possible by the interchangeability of the compression spring.
  • the compression spring from a first side of the overcurrent release forth mon ⁇ tierbar and disassembled from one of the first side opposite side.
  • the coil winding is arranged on a bobbin and the yoke is formed in two pieces.
  • the bobbin is made of plastic and has a contour for fixing the pole so that it can not come loose.
  • the contour thus serves as protection against loosening or loosening of the pole at e.g. Shocks.
  • the pole comprises a shaft and a screw head and is so fastened to the at ⁇ circuit piece, that the screw head in festgecard- th state is flush with the connection piece.
  • ⁇ by is next to a simple handling, for example by simple screws, when replacing the compression spring also ensures that no fluctuations in the armature pole distance occur due to the replacement, since the pole protrudes through the flush termination always to the same depth in the bobbin.
  • FIG. 1 shows an exploded view of an overcurrent release for a circuit breaker
  • the overcurrent release is composed of a coil winding 1 on a bobbin 6, a pole 2, an armature 3, a compression spring 5 and a connection 7.
  • the bobbin 6 is formed integrally with a support member 9.
  • a substantially Z-shaped yoke is in one piece and corresponds to the connection piece 7.
  • a combination screw 8 serves inter alia to each other positi ⁇ tioning of the two parts 7 and 9th
  • the compression spring 5 is in the assembled state between the pole 2 and the armature 3 in the interior of the bobbin 6.
  • the armature 3 has on the side facing the compression spring 5 a corresponding to the inner diameter of the compression spring 5 survey 4, which in the assembled state is enclosed by the compression spring 5.
  • the pole 2 is fastened to the connecting piece 7 by means of a thread, so that the compression spring 5 can be easily replaced in the finished device by unscrewing the pole 2, whereby the response value of the over ⁇ current release can be varied.
  • the pole-side hole of the bobbin 6 is large enough for a De Assembly of the compression spring 5 to allow the pressure spring exchange.
  • the pole-side hole of the bobbin 6 has next to a special contour for fixing the pole 2, which serves as (additional) protection, for example against unscrewing of the pole 2 in shock, so that the pole 2 can not solve.
  • FIG. 2 shows the overcurrent release from FIG. 1 in the assembled state, wherein the coil winding 1 is arranged on the bobbin 6.
  • the armature 3, the pole 2 and the compression spring 5 are located in the cavity of the cylindrical bobbin. 6
  • the invention relates to an overcurrent release with a yoke, with a coil winding, with a pole, with an armature and with a retaining spring for biasing the armature, wherein there is an air gap between the pole and the armature ⁇ .
  • the invention is based on the object ei ⁇ NEN overcurrent release with low force tolerances for the retaining spring whose response can be adjusted later, and to provide a circuit breaker with such an overcurrent release.
  • This object is achieved with an overcurrent release of the type mentioned above in that the retaining spring is designed as provided between the pole and the armature compression spring and that the over ⁇ current release is designed such that the compression spring from ⁇ exchangeable.
  • Compression springs can be manufactured with smaller force tolerances than torsion springs, which also advantageously within the allowable tolerance to IEC60947 of ⁇ 20% of the operating current can be reduced to eg 13 times the rated current minus 20%.
  • compression springs have no friction between the turns and no as unfavorable friction as a torsion spring bearing.
  • a slight subsequent shift of the response value of Ü overcurrent release on the finished overcurrent release or finished device possible.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

L'invention concerne un déclencheur à surintensité comprenant une culasse, un enroulement de bobine, un élément polaire, un induit et un ressort de retenue pour exercer une précontrainte sur l'induit, avec un entrefer entre l'élément polaire et l'induit. L'invention a pour objet d'indiquer un déclencheur à surintensité à faibles tolérances de force pour le ressort de retenue, dont la valeur de déclenchement peut être adaptée ultérieurement, ainsi qu'un commutateur de puissance équipé d'un tel déclencheur à surintensité. Cet objet est réalisé avec un déclencheur à surintensité du type mentionné en introduction en ce que le ressort de retenue est réalisé sous la forme d'un ressort de compression prévu entre l'élément polaire et l'induit et que le déclencheur à surintensité est exécuté de manière à ce que le ressort de compression puisse être remplacé. Les ressorts de compression peuvent être fabriqués avec des tolérances de force plus faibles que les ressorts de torsion, ce qui permet avantageusement aussi de réduire, au sein de la tolérance autorisée de ±20 % selon la norme IEC 60947, le courant de déclenchement à par exemple 13 fois le courant nominal moins 20 %. De plus, les ressorts de compression ne présentent aucun frottement entre les spires et aucun frottement défavorable comme pour un support à ressort de torsion. La possibilité de remplacement du ressort de compression permet en outre un décalage ultérieur aisé de la valeur de déclenchement sur le déclencheur à surintensité fini ou sur l'appareil fini.
PCT/EP2007/057070 2006-07-20 2007-07-11 Déclencheur à court-circuit réglable WO2008009594A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT07787344T ATE503264T1 (de) 2006-07-20 2007-07-11 Justierbarer kurzschlussauslöser
BRPI0711126-6A BRPI0711126A2 (pt) 2006-07-20 2007-07-11 disparador de curto-circuito ajustável
DE502007006788T DE502007006788D1 (de) 2006-07-20 2007-07-11 Justierbarer kurzschlussauslöser
EP07787344A EP2044605B1 (fr) 2006-07-20 2007-07-11 Declencheur a court-circuit reglable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006033717.4 2006-07-20
DE102006033717A DE102006033717B4 (de) 2006-07-20 2006-07-20 Justierbarer Kurzschlussauslöser

Publications (1)

Publication Number Publication Date
WO2008009594A1 true WO2008009594A1 (fr) 2008-01-24

Family

ID=38473005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057070 WO2008009594A1 (fr) 2006-07-20 2007-07-11 Déclencheur à court-circuit réglable

Country Status (7)

Country Link
EP (1) EP2044605B1 (fr)
KR (1) KR100994066B1 (fr)
CN (1) CN101490784A (fr)
AT (1) ATE503264T1 (fr)
BR (1) BRPI0711126A2 (fr)
DE (2) DE102006033717B4 (fr)
WO (1) WO2008009594A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136383A3 (fr) * 2008-06-17 2013-06-26 GEWISS S.p.A. Dispositif de contrôle pour appareil de rearmement automatique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103337422B (zh) * 2013-06-21 2015-04-22 浙江电器开关有限公司 塑壳式断路器脱扣器
KR101895264B1 (ko) * 2018-04-17 2018-09-05 제일전기공업 주식회사 차단기
CN111326954B (zh) * 2020-03-03 2020-12-29 山东睿控电气有限公司 一种无续流自带脱扣的陶瓷放电管及浪涌保护器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264437A (de) * 1948-02-13 1949-10-15 Ag Weber Einstellbarer magnetischer Schnellauslöser für Überstromschalter.
US4963848A (en) * 1989-03-31 1990-10-16 Square D Company Non-jamming magnetic trip structure
WO2001065585A1 (fr) * 2000-02-29 2001-09-07 General Electric Company Solenoide a deplacement reglable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1105900B1 (fr) * 1998-08-14 2002-10-30 Siemens Aktiengesellschaft Dispositif avec enroulement de bobine pouvant etre positionne axialement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH264437A (de) * 1948-02-13 1949-10-15 Ag Weber Einstellbarer magnetischer Schnellauslöser für Überstromschalter.
US4963848A (en) * 1989-03-31 1990-10-16 Square D Company Non-jamming magnetic trip structure
WO2001065585A1 (fr) * 2000-02-29 2001-09-07 General Electric Company Solenoide a deplacement reglable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136383A3 (fr) * 2008-06-17 2013-06-26 GEWISS S.p.A. Dispositif de contrôle pour appareil de rearmement automatique

Also Published As

Publication number Publication date
DE102006033717A1 (de) 2008-01-31
CN101490784A (zh) 2009-07-22
DE102006033717B4 (de) 2009-06-04
DE502007006788D1 (de) 2011-05-05
KR20080095839A (ko) 2008-10-29
KR100994066B1 (ko) 2010-11-11
EP2044605A1 (fr) 2009-04-08
BRPI0711126A2 (pt) 2011-08-30
ATE503264T1 (de) 2011-04-15
EP2044605B1 (fr) 2011-03-23

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