EP0159598B1 - Relais thermique à courant excessif avec étrier d'ajustement - Google Patents

Relais thermique à courant excessif avec étrier d'ajustement Download PDF

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Publication number
EP0159598B1
EP0159598B1 EP85104125A EP85104125A EP0159598B1 EP 0159598 B1 EP0159598 B1 EP 0159598B1 EP 85104125 A EP85104125 A EP 85104125A EP 85104125 A EP85104125 A EP 85104125A EP 0159598 B1 EP0159598 B1 EP 0159598B1
Authority
EP
European Patent Office
Prior art keywords
slide
adjustment elements
initiating
housing
casing
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
EP85104125A
Other languages
German (de)
English (en)
Other versions
EP0159598A3 (en
EP0159598A2 (fr
Inventor
Karl-Heinz Lehmann
Friedrich Wink
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
ASEA BROWN BOVERI AG
Asea Brown Boveri AG Germany
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 ASEA BROWN BOVERI AG, Asea Brown Boveri AG Germany filed Critical ASEA BROWN BOVERI AG
Priority to AT85104125T priority Critical patent/ATE65641T1/de
Publication of EP0159598A2 publication Critical patent/EP0159598A2/fr
Publication of EP0159598A3 publication Critical patent/EP0159598A3/de
Application granted granted Critical
Publication of EP0159598B1 publication Critical patent/EP0159598B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with bimetal elements
    • 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 single-pole or multi-pole thermal overcurrent relay arranged in a divided housing with a tripping slide actuated by one or more tripping bimetallic (s) associated with a phase, which is designed like a comb or ladder in a guide provided on the housing base for this purpose is displaceable, and with two spaced adjusting elements.
  • a tripping slide actuated by one or more tripping bimetallic (s) associated with a phase, which is designed like a comb or ladder in a guide provided on the housing base for this purpose is displaceable, and with two spaced adjusting elements.
  • Such overcurrent relays are used to protect electrical components such. B. electric motors, before overloading due to impermissibly high power consumption.
  • a multi-pole thermal overcurrent relay which, arranged in a split housing, has a tripping slide actuated by tripping bimetals and a switching mechanism which engages with it.
  • each deflection of the bimetals is to be assigned a specific value of the current intensity in accordance with the distance traveled by the trigger slide. This relationship applies as long as the geometric conditions remain the same, that is, as long as the position of the trigger slide with respect to the guide in the housing or the bimetals does not change and no additional forces are effective, is triggered at the specified overcurrent value and the current interrupted.
  • the object of the invention is to avoid storing different release slides and to simplify the adjustment process by using suitable means.
  • the adjusting elements are accordingly spaced from each other so that with their help an exact adjustment of the height play of the trigger slide is possible by raising or lowering the end or the ends of one or the other adjusting element or both. Due to the displacement and due to the fact that the adjusting elements designed as rigid brackets after their adjustment are firmly in the housing or in the housing wall and in the corresponding Once they have been frictionally fixed, the height play resulting from the manufacturing tolerances, once set and corrected, remains constant over the entire operating time of the overcurrent relay.
  • the adjusting elements are inserted into the housing in such a way that the limitation of the height play of the trigger slide is set at its ends.
  • An advantageous embodiment of the invention can be such that a stop is provided in each area for the adjustment of the adjustment elements, against which the adjustment elements bear. In this way, a predetermined game can be achieved.
  • slots are preferably provided in the side walls, which are opposite the end faces of the trigger slides. This allows the height play to be checked or checked from the outside, namely in terms of installed, assembled condition.
  • a housing 10 is shown schematically with a rectangular cross-section, into which a one-piece trigger slide 14 is delimited to the side and downwards by the housing wall 12, so that it is guided in the axial direction by housing webs arranged to separate three trigger bimetals 18 with heating conductors is.
  • the one-piece trigger slide 14 which rests like a ladder with its three connecting webs 26 at the free ends of the release bimetals 18, slides on the underside 20 of the housing and is thereby supported by two adjustment brackets 24 arranged on opposite side walls 22 with a nose-shaped bulge, in short nose 25, in its height play "A" limited.
  • the brackets 24 are guided in a T-shaped groove 23 which is formed in or integrally with the housing side wall 22, with expansion brackets 42, 44 provided in pairs one above the other at the guide end 40 of the adjusting bracket 24 clamping in the groove 23 and effecting a non-positive fixing of the adjusting bracket 24.
  • a vertical slot 21 can be provided on both sides in the housing side walls 22, as shown in FIG. These slots 21 lie opposite the end faces of the trigger slide 14 and permit visual and / or mechanical control of the height play "A" in the assembled state of the overcurrent relay.
  • a lower stop 27 can be provided to limit the sliding path of the adjusting bracket 24 downwards, which is designed such that the adjusting bracket 24 only touches the stop 27 in the region of the guide end 40, so that the cantilever arm with the nose 25 is free, ie unloaded from the stop 27, and experiences positive engagement with the upper edge 36 of the slide.
  • FIG. 2 shows a top view of an adjustment bracket 24 in which it is inserted into the groove 21.
  • expansion tabs 42, 44 are provided in pairs symmetrically to the longitudinal axis, which prevent tilting in the groove 21 on the one hand and on the other hand fix the adjustment bracket 24 by non-positively locking against the wall of the groove 21 invest.
  • the expansion tabs 42, 44 are pre-bent out of the flat guide end 40 in the direction of the nose 25 and thus ensure exact guidance.
  • the flat guide end 40 has a contact surface 46 which is convexly curved forward in the direction of the bracket, the upper end face of which serves to enlarge the contact surface for the tool with which the bracket is pushed into its end position.
  • the functional principle mentioned at the outset applies; That is, the trip bimetals 18 are either directly (conductive) or indirectly (heated by resistance wire) heated and turned in the direction of arrow B when the current is switched on, the webs 26 of the trip slide 14, which are always present, being guided horizontally and undergoing the same movement.
  • the release slide 14 can tip as a result of excessive clearance A, as a result of which additional forces which must be overcome by the release bimetal 18 occur.
  • the use of the two adjusting brackets 24 is provided, which are slidably mounted within a T-shaped groove 21 arranged in or on the wall 22.
  • the stirrups are shifted in the direction of the trigger slide until their support points 25 touch the trigger slide 14. Then they are moved in opposite directions until the permissible dimension A is reached.
  • This dimension A is synonymous with the permissible height play.
  • a lower stop 27 (see FIG. 1) can also be provided, against which the adjusting bracket 24 is displaced, it being ensured that the nose 25 non-positively acts on the upper edge 36 of the slide.
  • a correspondingly dimensioned plate may be inserted beforehand between the nose 25 and the upper edge of the slider or subsequently inserted through the slot, so that the bracket can plastically deform and after removal of the plate the arrangement has the specified play.

Landscapes

  • Breakers (AREA)
  • Protection Of Generators And Motors (AREA)
  • Thermally Actuated Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (3)

  1. Relais de surcharge thermique unipolaire ou multipolaire disposé dans un boîtier (12) en plusieurs parties et comprenant un coulisseau déclencheur (14), qui est actionné par un ou plusieurs bilames de déclenchement associés chaque fois à une phase, qui est réalisé sous la forme d'un peigne ou d'une échelle et qui est susceptible de coulisser dans un élément-guide prévu à cet effet sur le fond du boîtier, et deux éléments d'ajustage (24) disposés à distance l'un de l'autre, caractérisé par le fait que le jeu en hauteur du coulisseau déclencheur (14) peut être réglé au moyen des éléments d'ajustage (24), perpendiculairement à sa direction de déplacement, que les éléments d'ajustage (24) sont réalisés sous la forme d'étriers rigides en flexion avec des bombements en forme de crans et sont guidés de manière déplaçable dans la zone des extrémités du coulisseau déclencheur (14) chaque fois dans une rainure (23) en forme de T s'étendant dans la paroi du boîtier, perpendiculairement au fond du boîtier, et peuvent être fixés par serrage dans chaque position (22) au moyen de languettes d'écartement (42, 44).
  2. Relais de surcharge thermique selon la revendication 1, caractérisé par le fait que pour le réglage des éléments d'ajustage (24), il est prévu dans leur zone chaque fois une butée (27) contre laquelle viennent en appui les éléments d'ajustage.
  3. Relais de surcharge thermique selon l'une des revendications 1 ou 2, caractérisé par le fait que, pour le réglage du jeu en hauteur ou de son contrôle visuel et/ou mécanique, des fentes (21) sont prévues dans les parois latérales (22) qui se situent en regard des faces frontales du coulisseau déclencheur (14).
EP85104125A 1984-04-21 1985-04-04 Relais thermique à courant excessif avec étrier d'ajustement Expired - Lifetime EP0159598B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85104125T ATE65641T1 (de) 1984-04-21 1985-04-04 Thermisches ueberstromrelais mit justierbuegel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3415226 1984-04-21
DE19843415226 DE3415226A1 (de) 1984-04-21 1984-04-21 Thermisches ueberstromrelais mit justierbuegel

Publications (3)

Publication Number Publication Date
EP0159598A2 EP0159598A2 (fr) 1985-10-30
EP0159598A3 EP0159598A3 (en) 1987-09-16
EP0159598B1 true EP0159598B1 (fr) 1991-07-24

Family

ID=6234249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104125A Expired - Lifetime EP0159598B1 (fr) 1984-04-21 1985-04-04 Relais thermique à courant excessif avec étrier d'ajustement

Country Status (3)

Country Link
EP (1) EP0159598B1 (fr)
AT (1) ATE65641T1 (fr)
DE (2) DE3415226A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548479C2 (de) * 1995-12-22 1999-09-02 Siemens Ag Thermisches Auslösesystem
DE19938965A1 (de) * 1999-08-17 2001-02-22 Abb Patent Gmbh Auslöseeinrichtung für einen elektrischen Installationsschalter
DE19949530A1 (de) * 1999-10-14 2001-04-19 Abb Patent Gmbh Führungselement zur Führung eines Auslöseschiebers für ein thermisches Überstromrelais
DE102008031894B4 (de) * 2008-07-08 2014-03-13 Abb Ag Elektrisches Schaltgerät mit einem thermischen Auslöser

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168355A (en) * 1961-01-09 1965-02-02 La Vern E Rudolph Slide assembly for sliding doors
US3226845A (en) * 1964-02-20 1966-01-04 Ausnit Steven Sliding fastener strips
DE1982490U (de) * 1968-01-26 1968-04-04 Stotz Kontakt Gmbh Mehrpoliges, aus zwei uebereinanderliegenden teilen bestehendes thermisches ueberstromrelais.
GB1250773A (fr) * 1968-11-23 1971-10-20
GB1536197A (en) * 1976-02-25 1978-12-20 Cutler Hammer World Trade Inc Electrical overload switching relay
DD159662B1 (de) * 1981-06-15 1988-01-27 Pentacon Dresden Veb Kompaktes parallelfederndes fuehrungsbauelement
DE3401901A1 (de) * 1984-01-20 1985-08-01 Brown, Boveri & Cie Ag, 6800 Mannheim Thermisches ueberstromrelais mit justierexzenter

Also Published As

Publication number Publication date
EP0159598A3 (en) 1987-09-16
EP0159598A2 (fr) 1985-10-30
DE3415226A1 (de) 1985-10-31
DE3583522D1 (de) 1991-08-29
ATE65641T1 (de) 1991-08-15

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