EP0400414A2 - Disjoncteur automatique, particulièrement disjoncteur de protection de ligne - Google Patents

Disjoncteur automatique, particulièrement disjoncteur de protection de ligne Download PDF

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Publication number
EP0400414A2
EP0400414A2 EP90109428A EP90109428A EP0400414A2 EP 0400414 A2 EP0400414 A2 EP 0400414A2 EP 90109428 A EP90109428 A EP 90109428A EP 90109428 A EP90109428 A EP 90109428A EP 0400414 A2 EP0400414 A2 EP 0400414A2
Authority
EP
European Patent Office
Prior art keywords
bearing body
switch according
automatic switch
adjustment
der
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.)
Granted
Application number
EP90109428A
Other languages
German (de)
English (en)
Other versions
EP0400414A3 (fr
EP0400414B1 (fr
Inventor
Dieter Kropp
Gerhard Dr.-Ing. Scholz
Günter Dipl.-Ing Böker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0400414A2 publication Critical patent/EP0400414A2/fr
Publication of EP0400414A3 publication Critical patent/EP0400414A3/fr
Application granted granted Critical
Publication of EP0400414B1 publication Critical patent/EP0400414B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H71/7427—Adjusting only the electrothermal 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H2071/7454—Adjusting only the electrothermal mechanism with adjustable axis of transmission lever between bimetal element and trip lever
    • 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
    • H01H2071/7481—Means for adjusting the conditions under which the device will function to provide protection with indexing means for magnetic or thermal tripping adjustment knob

Definitions

  • the invention relates to a circuit breaker according to the preamble of claim 1. Particularly in the case of circuit breakers, it is usually necessary to transmit the movement of a tripping element, for example a bimetallic tripping device, to a latching point of the switching mechanism by means of an intermediate member.
  • a tripping element for example a bimetallic tripping device
  • both the magnetic release and the bimetal release work on a pivotally mounted ratchet lever, which in turn acts on a latching point.
  • the various movement sequences are adapted to one another via the ratchet lever and at the same time a base surface is created for an adjusting screw which can be adjusted in the bimetal.
  • the setting of the thermal release in this arrangement is very sensitive since the adjusting screw on the spring-elastic free end of the bimetal must be turned with a tool.
  • the adjustment is also very time-consuming and precise setting values can hardly be achieved. Larger variations in the overload range cannot be ruled out with such switches.
  • the invention has for its object to provide a simply constructed adjustment device with a self-switch of the type mentioned to adapt the trigger functions to the switching mechanism, the setting functions are clearly defined and can be carried out automatically, and with improved adjustment properties a mechanical influence of the associated trigger during Adjustment process excludes.
  • the invention is advantageous in that the adjustment is not made directly on the trigger, but indirectly by changing the position of the transmission element. This eliminates the previously usual setting process on the actual trigger, for example on the free flexible end of a bimetal strip. Misalignment due to the deformation of mechanical components is therefore eliminated.
  • the shape of the bearing body can also be used to implement different automatic adjustment options. By moving the adjustment point away from the actual trigger, it can also be designed as a simpler component
  • the single figure shows a three-dimensional partial view schematically of a self-switch in a narrow construction, the shell-shaped housing part (1) of which has a projection (1a) in which a blind hole-like cylindrical recess (1b) with a pin (1c) projecting centrally is recessed towards the inside of the housing .
  • a cylindrical bearing body (2) is inserted into the housing recess with almost no play and is kept stiff by means of an axial bore (2a) on the pin (1c) by choosing appropriate fit dimensions.
  • the bearing body is provided with an eccentrically arranged, projecting bearing pin (2b) on its end face facing the interior, which ends approximately flush with the molded part (1a). This is preferably formed directly, but can also be an inserted pin.
  • the bearing pin (2b) serves as a bearing point for a flat, angular trigger lever (3), one of which lever arm (3a) is acted upon by a trigger, for example by the free end of a bimetallic strip (4).
  • the trigger lever With its other lever arm (3b), the trigger lever preferably engages directly under a locking pin (5) of the switching mechanism.
  • a curvature of the bimetallic strip (4) in the direction of the arrow (6) shown in the event of thermal overload is therefore transmitted from the release lever to the latching pin. If the release force of the bimetallic strip is sufficiently high after covering an empty path to overcome the holding force of the latching pin, the latching is released and the automatic switch interrupts the current flow via its switching mechanism. For a certain trigger behavior, an adjustment process on the fully assembled auto switch is required.
  • the bearing body has a toothing (2c) on its outer surface, which is accessible via a blind hole (1d) molded from the rear outside of the housing.
  • An external setting tool (7) with its gear drive (7a) can be inserted into this blind hole (1d) axially offset from the recess (1b) Introduce adjustment process.
  • the outer surface of the blind hole which is offset from the recess (1b) at the center distance by the two pitch circle knives, serves as the centering of the gear drive.
  • the preferably automatically driven setting tool (7) which is controlled via triggering parameters, enables the bearing body (2) to be turned gently and thus guarantees an efficient adjustment of each self-switch.
  • the tightness of the bearing body between the bore (2a) and the pin (1c) is overcome by the torque of the gear drive (7a), but its automatic adjustment is prevented. Additional safety measures for the adjusted position, for example by means of lacquer protection, can therefore be dispensed with.
  • the relatively small blind hole does not need to be closed afterwards, since the bearing body is preferably a plastic part and no live parts of the switch can be touched at this point. Overall, this simplifies the entire adjustment process.
  • the adjustment of the bearing body by an external adjustment tool is of course also possible in other ways, for example via a screw drive or a worm drive, without leaving the scope of the invention.
  • the bearing body must have appropriate receiving means for the setting tool, for example a screw slot.
  • stops can also be provided on the bearing body and in the recess in order to limit the adjustment sector of the bearing body to the area necessary for the adjustment.

Landscapes

  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Thermally Actuated Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP90109428A 1989-05-27 1990-05-18 Disjoncteur automatique, particulièrement disjoncteur de protection de ligne Expired - Lifetime EP0400414B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917327A DE3917327A1 (de) 1989-05-27 1989-05-27 Selbstschalter, insbesondere leitungsschutzschalter
DE3917327 1989-05-27

Publications (3)

Publication Number Publication Date
EP0400414A2 true EP0400414A2 (fr) 1990-12-05
EP0400414A3 EP0400414A3 (fr) 1991-04-24
EP0400414B1 EP0400414B1 (fr) 1994-12-21

Family

ID=6381537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109428A Expired - Lifetime EP0400414B1 (fr) 1989-05-27 1990-05-18 Disjoncteur automatique, particulièrement disjoncteur de protection de ligne

Country Status (9)

Country Link
EP (1) EP0400414B1 (fr)
AT (1) ATE116074T1 (fr)
CZ (1) CZ281845B6 (fr)
DD (1) DD294815A5 (fr)
DE (2) DE3917327A1 (fr)
ES (1) ES2065429T3 (fr)
HR (1) HRP931371B1 (fr)
PL (1) PL163238B1 (fr)
YU (1) YU47796B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491250A3 (en) * 1990-12-17 1993-03-31 Abb Patent Gmbh Installation apparatus
EP0849763A3 (fr) * 1996-12-20 1999-01-20 ABBPATENT GmbH Déclencheur de surintensité pour un disjoncteur électrique
FR2894382A1 (fr) * 2005-12-06 2007-06-08 Schneider Electric Ind Sas Declencheur thermique reglable pour dispositif de coupure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619295C2 (de) * 1996-05-13 2003-10-23 Siemens Ag Justierverfahren für thermische Überlastauslöser
DE10064825A1 (de) * 2000-12-22 2002-07-04 Abb Patent Gmbh Justiereinrichtung für den thermischen Auslöser eines Installationsschaltgerätes
CN116742426A (zh) * 2023-08-01 2023-09-12 湖南第一师范学院 一种具有作业保护功能的电连接器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600061C (de) * 1928-02-24 1934-07-13 Schiele & Bruchsaleri Industri Eich- und Einstellvorrichtung fuer thermische Ausloeser von UEberstromschaltern
DE708975C (de) * 1939-04-19 1941-08-02 Voigt & Haeffner Akt Ges Einstellbarer UEberstromausloeser fuer elektrische Selbstschalter
CH235374A (de) * 1943-03-29 1944-11-30 Bbc Brown Boveri & Cie Anordnung zur Auslöseverzögerung von Bimetallauslösern beim Anlauf lange anlaufender Motoren.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0491250A3 (en) * 1990-12-17 1993-03-31 Abb Patent Gmbh Installation apparatus
EP0849763A3 (fr) * 1996-12-20 1999-01-20 ABBPATENT GmbH Déclencheur de surintensité pour un disjoncteur électrique
FR2894382A1 (fr) * 2005-12-06 2007-06-08 Schneider Electric Ind Sas Declencheur thermique reglable pour dispositif de coupure

Also Published As

Publication number Publication date
DE59008056D1 (de) 1995-02-02
ATE116074T1 (de) 1995-01-15
DD294815A5 (de) 1991-10-10
CS253790A3 (en) 1992-02-19
HRP931371B1 (en) 1999-08-31
ES2065429T3 (es) 1995-02-16
YU102490A (sh) 1993-11-16
EP0400414A3 (fr) 1991-04-24
HRP931371A2 (hr) 1995-02-28
CZ281845B6 (cs) 1997-02-12
PL285329A1 (en) 1991-01-28
EP0400414B1 (fr) 1994-12-21
YU47796B (sr) 1996-01-09
DE3917327A1 (de) 1990-11-29
PL163238B1 (en) 1994-02-28

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