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EP0338250B1 - Mehrphasiger Schutzschalter - Google Patents

Mehrphasiger Schutzschalter Download PDF

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Publication number
EP0338250B1
EP0338250B1 EP89104698A EP89104698A EP0338250B1 EP 0338250 B1 EP0338250 B1 EP 0338250B1 EP 89104698 A EP89104698 A EP 89104698A EP 89104698 A EP89104698 A EP 89104698A EP 0338250 B1 EP0338250 B1 EP 0338250B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
individual
overload
switching mechanism
triggering element
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 - Lifetime
Application number
EP89104698A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0338250A3 (en
EP0338250A2 (de
Inventor
Erich Ringler
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.)
Abl Sursum Bayerische Elektrozubehoer & Co K GmbH
Original Assignee
Abl Sursum Bayerische Elektrozubehor & Co KG GmbH
ABL SURSUM BAYERISCHE ELEKTROZUBEHOR GmbH and Co KG
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 Abl Sursum Bayerische Elektrozubehor & Co KG GmbH, ABL SURSUM BAYERISCHE ELEKTROZUBEHOR GmbH and Co KG filed Critical Abl Sursum Bayerische Elektrozubehor & Co KG GmbH
Publication of EP0338250A2 publication Critical patent/EP0338250A2/de
Publication of EP0338250A3 publication Critical patent/EP0338250A3/de
Application granted granted Critical
Publication of EP0338250B1 publication Critical patent/EP0338250B1/de
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
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected 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
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7445—Poly-phase adjustment

Definitions

  • the invention relates to a multi-phase circuit breaker, which is composed of several individual switches in a shell design, which isolates all poles in the event of overload on only one individual switch by coupling the individual switches, and in which each individual switch is completely formed in its shells, including overload release element and switching mechanism, according to the preamble of claim 1.
  • a circuit breaker of this type known from CH-A-604 363 is composed of individual switches, such as those e.g. are known from DE-A-33 39 398.
  • the known circuit breaker is a circuit breaker in which the individual switches are designed for certain overload currents. It is known per se (DE-A-35 45 930) to use assemblies for circuit breakers also for the construction of motor circuit breakers.
  • the motor protection switch has a current range setting device which comprises an actuating member and a current scale assigned to it. In the known motor protection switch, only a single switching mechanism is provided. The production of this motor protection switch is expensive compared to the production of the known circuit breaker of the type mentioned.
  • a circuit breaker is also known (GB-A-2 062 966), in which a motor circuit breaker current range setting device is provided which has an actuating member and a current scale associated therewith, and in which the adjusting elements for each individual switch between the overload Tripping element and the switching mechanism are arranged and are a wedge structure transverse to the working direction of the overload tripping element.
  • the adjustment elements are functionally connected to a common axis, because this is the only way to trigger the individual switches together.
  • the object of the invention is therefore to provide a circuit breaker of the type mentioned, which is completed in a simplified manner to a motor circuit breaker with current range setting.
  • the circuit breaker according to the invention solving this problem, has the characterizing features of patent claim 1.
  • the individual switches known per se are used, which are manufactured in large numbers and therefore inexpensively. Although only one rear derailleur is required per se, single switches with one rear derailleur each are used for reasons of profitable production.
  • every individual switch is assigned its own current range setting device. Rather, a single current range setting device is provided, which is modified in such a way that it acts on each individual switch at the same time.
  • a simplified current range setting device which forms a functional unit, is added to the multiphase circuit breaker of the type mentioned at the outset. The same components - coil block, bimetallic device, arcing chamber and switchgear - are used for a circuit breaker and a motor protection switch.
  • the adjustable wedge structure is simple to manufacture and requires little space. By shifting the wedge structure transversely to the working direction of the overload release element, the distance between it and the release element of the switching mechanism is changed.
  • the intermediate guide piece is arranged parallel to the row of overload release elements and parallel to the row of switching mechanisms in the individual switches arranged next to one another and thus displaceably transversely to the working direction of the overload triggering elements and switching mechanisms.
  • each adjusting element of the individual switches Since the adjusting elements of the individual switches are mounted such that they can move relative to one another, each adjusting element can adjust itself to its individual switch. This is important because, due to manufacturing tolerances, shape and post-shrinkage of pressed parts, it is at most possible in practice to connect the individual switches with one another without play. In the case of a rigid overall adjusting element, the distance between the overload trigger element and the trigger element of the switching mechanism would change in an uncontrolled manner if the individual switches were displaced relative to one another parallel to the working direction of the overload trigger elements.
  • the actuator is usually stored in the shell of one of the individual switches. It is particularly expedient and advantageous if the actuating member is mounted in a wall piece which is subsequently inserted into the shells of at least one individual switch. This simplifies the assembly of the circuit breaker.
  • the actuating element is preassembled on the wall piece and the intermediate guide piece can be installed via the opening of the shell to be closed by the wall piece.
  • each individual switch can be operated manually.
  • Overload means both an overcurrent and a short-circuit current.
  • the motor protection switch is mainly used to protect a three-phase motor.
  • the actuator is e.g. a pin guided in a groove or an eccentric.
  • the invention is not restricted to a specific embodiment of the overload individual switch in a shell construction.
  • a coil block 2 or electromagnetic release which carries a fixed contact piece 3, in a housing 1.
  • a quenching chamber 4 and then an arc guide plate 5, which carries on its side facing away from the quenching chamber a bimetal or overload release element 6, which is adjusted by means of a screw device 7 mounted in the housing 1.
  • a connector 8 is connected via a heating winding 9 and / or a flexible connection to the overload release element 6.
  • a connecting line 10 closes the circuit via a movable contact piece 11, the fixed contact piece 3 and a coil winding 12 to a connecting piece 13.
  • the movable contact piece 11 carries a switching mechanism 14, which consists of a locking lever 15 and a pawl 16.
  • the pawl 16 is connected by means of a bracket 17 to a switching element 18, whereby a link chain is formed which closes or opens the circuit when the switching element is actuated manually.
  • the adjusting device is shown in more detail in FIG. 4.
  • An intermediate guide piece 21 or adjusting slide carries, rotatably suspended in a bearing, 23 adjusting members 19, which on their sides facing the triggering elements 6 have a rising surface 24, viewed parallel to the triggering elements, viewed from the direction of the cover to the release elements, that is to say they have a wedge shape.
  • the intermediate guide piece 21 is driven by an actuator 25 designed as an adjusting eccentric, which is rotatably mounted in a wall piece 20 and has an eccentric pin 26, and can be displaced transversely to the working direction of the triggering elements 6.
  • the intermediate guide piece 21 moves without play in a recess in the housing 1, which is achieved according to FIG. 3 by the suspension of tongues 27 located on the intermediate guide piece.
  • the at the free end of the tongues 27 and opposite cams 28 are arranged so that they only ever move in a recess of a housing part, so do not have to overcome a separation point.
  • the adjusters 19 are suspended on arms 29 of the intermediate guide piece 21 such that two arms 29 of the intermediate guide piece 21 each encompass the adjusting members 19 in the displacement device without play.
  • the positioning of the adjusting members 19 in the arms 29 of the intermediate guide piece 21 can be done in a variety of ways.
  • the adjusting members can also each comprise a fork of the intermediate guide piece in the form of a fork.
  • the intermediate guide piece can also be actuated via a pin.
  • the wall piece 20 would have a linear scale, instead of an arcuate scale 30 shown in FIG. 1.
  • the wall piece 20 has a resilient latching tongue 31 according to FIG. 8. 3) and at the same time, the wall piece and thus the entire adjusting device is fixed at a defined point in the direction of displacement by means of a thickened part 34.
  • two tongues 33 are rigid and reach behind on the outer parts of the housing only by pushing the complete individual switches together during final assembly.
  • the housing of the circuit breaker is composed of three self-contained individual housings 22 and held together in a manner known per se.
  • Each individual housing 22 is composed of two different shells 35 and 36.
  • the switching mechanisms in the adjacent individual housings 22 are coupled to one another in a manner not shown in detail, but in a manner known per se, so that when a switching mechanism is triggered, the neighboring switching mechanism is also triggered.
  • the wall piece 20 extends to all individual housings 22, which facilitates the insertion of the intermediate guide piece 21. This is provided with an elongated hole 37 in which the pin 26 engages.

Landscapes

  • Breakers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Protection Of Generators And Motors (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Keying Circuit Devices (AREA)
EP89104698A 1988-04-19 1989-03-16 Mehrphasiger Schutzschalter Expired - Lifetime EP0338250B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812934 1988-04-19
DE3812934A DE3812934A1 (de) 1988-04-19 1988-04-19 Mehrphasiger schutzschalter

Publications (3)

Publication Number Publication Date
EP0338250A2 EP0338250A2 (de) 1989-10-25
EP0338250A3 EP0338250A3 (en) 1990-10-24
EP0338250B1 true EP0338250B1 (de) 1995-07-26

Family

ID=6352269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104698A Expired - Lifetime EP0338250B1 (de) 1988-04-19 1989-03-16 Mehrphasiger Schutzschalter

Country Status (4)

Country Link
EP (1) EP0338250B1 (es)
AT (1) ATE125641T1 (es)
DE (2) DE3812934A1 (es)
ES (1) ES2075001T3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040263A1 (de) * 1990-12-17 1992-06-25 Abb Patent Gmbh Installationsgeraet
FR2727567B1 (fr) * 1994-11-28 1997-01-03 Schneider Electric Sa Dispositif anti-declassement en calibre d'un disjoncteur suite a l'adaptation d'un auxiliaire
DE19653294A1 (de) * 1996-12-20 1998-06-25 Abb Patent Gmbh Auslöseeinrichtung für einen elektrischen Installationsschalter bei Überstrom
AT405111B (de) * 1997-07-10 1999-05-25 Felten & Guilleaume Ag Oester Einphasiger schutzschalter
US6445274B1 (en) * 2000-11-10 2002-09-03 Eaton Corporation Circuit interrupter with thermal trip adjustability
CN102169782B (zh) * 2011-04-02 2012-12-19 常熟开关制造有限公司(原常熟开关厂） 断路器的脱扣器电流调节装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1563919C3 (de) * 1966-07-08 1978-04-20 Josef Dipl.-Ing. 8500 Nuernberg Westermeyer Mehrpoliger Schutzschalter mit zwangsläufiger allpoliger Abschaltung
DE1638043A1 (de) * 1968-03-08 1972-01-05 Hundt & Weber Ein Schaltschloss aufweisender Leistungsschalter
CH604363A5 (en) * 1976-09-10 1978-09-15 Landis & Gyr Ag Electrical cut=out relay
GB2004699B (en) * 1977-09-17 1982-01-27 Dorman Smith Switchgear Ltd Electric circuit breakers
JPS5669745A (en) * 1979-11-10 1981-06-11 Terasaki Denki Sangyo Kk Circuit breaker
DE3339398A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter mit offener und geschlossener kontaktstellung
DE3533431A1 (de) * 1984-03-21 1987-03-26 Kopp Gmbh & Co Kg Heinrich Zaehlervorautomat
US4680564A (en) * 1984-10-01 1987-07-14 Siemens-Allis, Inc. Multi-pole molded case circuit breaker with a common contact operating crossbar member
DE3545930A1 (de) * 1985-12-23 1987-06-25 Bbc Brown Boveri & Cie Mehrphasiger motorschutzschalter

Also Published As

Publication number Publication date
DE3812934A1 (de) 1989-11-02
EP0338250A3 (en) 1990-10-24
ATE125641T1 (de) 1995-08-15
EP0338250A2 (de) 1989-10-25
DE58909358D1 (de) 1995-08-31
ES2075001T3 (es) 1995-10-01
DE3812934C2 (es) 1992-05-14

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