EP0505794B1 - Elekromagnetisches Schaltgerät mit Deionisierungseinrichtungen - Google Patents

Elekromagnetisches Schaltgerät mit Deionisierungseinrichtungen Download PDF

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Publication number
EP0505794B1
EP0505794B1 EP92103912A EP92103912A EP0505794B1 EP 0505794 B1 EP0505794 B1 EP 0505794B1 EP 92103912 A EP92103912 A EP 92103912A EP 92103912 A EP92103912 A EP 92103912A EP 0505794 B1 EP0505794 B1 EP 0505794B1
Authority
EP
European Patent Office
Prior art keywords
housing portion
upper housing
plates
cover
housing part
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
EP92103912A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0505794A1 (de
Inventor
Ralph Kriechel
Heinz Saure
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.)
Eaton Industries GmbH
Original Assignee
Kloeckner Moeller 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 Kloeckner Moeller GmbH filed Critical Kloeckner Moeller GmbH
Publication of EP0505794A1 publication Critical patent/EP0505794A1/de
Application granted granted Critical
Publication of EP0505794B1 publication Critical patent/EP0505794B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H2009/347—Stationary parts for restricting or subdividing the arc, e.g. barrier plate using lids for closing the arc chamber after assembly
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/042—Application rejection, i.e. preventing improper installation of parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns

Definitions

  • the invention relates to an electromagnetic switching device with an electromagnetic drive arranged in a multi-part housing with externally accessible connecting contacts and with switching contacts accommodated in a switching room and with deionizing devices assigned to each switching contact, with extinguishing plates forming an extinguishing chamber and a commutation plate with end legs bent twice in a U-shape, that Arranged parallel to the longitudinal extent of a contact bridge carrying the movable contacts and the end legs of which are bent essentially parallel to the quenching plates, the deionizing devices being accommodated in a hood-like housing upper part which can be closed by a cover.
  • a switching device with quenching plate arrangement and a commutation plate in the area of the contact bridge with a substantially U-shaped shape, which is accommodated in a housing with a removable cover, has become known, for example, from DE-GM 85 31 352.
  • the quenching plates are inserted into grooves in the housing walls and held in place by means of comb-shaped rubber parts by fitting the cover of the housing.
  • the commutation plates have no holding function with respect to the quenching plates.
  • a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.
  • a switching device is known in which the deionization device is accommodated in a closed upper housing part, that is to say without a removable cover, the extinguishing plates being fastened to the inner wall of the housing, as well as the double U-shaped commutation plate.
  • the deionization devices are in turn housed in a closed upper housing part, the extinguishing plates being formed with elastically deformable projections and being inserted in grooves formed in a plate mounting parallel to the contact bridge and perpendicular to the switching direction of the switching device and being held with a press fit.
  • the plate bearing containing the quenching plates is equipped with a lateral leaf spring, so that the plate bearing is thereby fixed and clamped in the upper housing part.
  • the commutation plate has laterally flat ends which extend parallel to the quenching plates and hook with a projection on the plate holder for the quenching plates, so that the commutation plate is fastened to the plate mounting.
  • the invention has for its object to facilitate the assembly and disassembly of the deionization devices of a switching device and to enable the switching contacts of the switching devices to be replaced without any problems.
  • the electromagnetic switching device of the generic type in such a way that the packages assembled by means of insulating plates to form an extinguishing chamber and used as packages in chambers of the housing upper part are bent by means of the double U-shape End legs of the commutation plates, which press resiliently against the insulating plates of a package of quenching plates protruding at the edge, are pressed against the housing wall of the upper housing part and the opposing packages are each held in the chambers by resilient support of the commutation plate.
  • Extinguishing sheets assembled into a package by means of insulating plates are known as a structural unit for electrical switching devices, as is shown, for example, by DE-PS 1173566.
  • a hood-like upper housing part which can be prefabricated completely equipped with the deionization device and as a whole on the lower housing part of the housing which receives the drive and the switching contacts Switchgear can be put on and taken off again.
  • Essential to the invention is the fixing of the quenching plates forming the quenching chambers in the upper housing part directly by the commutation plates, the end legs of which are bent so that they are compressed after insertion and press resiliently against the insulating plates holding the quenching plates in the package and hold them in the upper part of the housing. Even when the cover of the upper housing part is removed, the deionization device is not changed.
  • the construction according to the invention of the upper housing part which accommodates the deionization device, enables complete assembly from above with the cover removed.
  • the commutation plates with their resilient end legs facilitate and simplify the assembly of the entire deionization device for the switching device.
  • the cover covering the hood-shaped housing upper part serves only as a housing closure, but not for holding or fastening parts of the deionization device.
  • the lid is equipped on its underside with resilient protruding locking tongues with which it snaps into the upper housing part and cannot fall off in this way. In the event of possible disassembly, the latching tongues can be released again from the inside after removing the upper housing part.
  • the entire upper part of the housing including the cover can be removed from the switching device without loosening the wiring, for example to exchange contacts.
  • the upper housing part is divided into quenching chamber regions by means of mutually parallel partition walls, and each of these quenching chamber regions is bridged in the middle by a bridge which extends between the partition walls or partition wall and wall of the housing top part.
  • These bridges serve as supports for the commutation plates.
  • the commutation plates themselves are also in their position by the resilient clamping of the quenching plates in the Upper part of the housing held.
  • Both the bridges and the commutation plates have a push-through hole in the center, through which the protruding latching tongues of the cover can preferably be inserted and locked in the bridges on the edge.
  • switch position indicator which is mounted with the commutation plate, the approximately U-shaped switch position indicator being hung over the commutation plate and being inserted through a correspondingly large opening in the bridge in the upper part of the housing.
  • This switch position indicator is designed so that the switch can not be turned on.
  • the intermediate walls of the upper housing part have insertion slots into which protruding wall webs formed on the underside of the cover engage.
  • the upper housing part preferably has a T-shaped shape in cross section parallel to the contact bridges with two laterally projecting flanges as a support on the lower housing part, it covering the connecting contacts accommodated laterally on the lower housing part with the supporting flanges.
  • the upper housing part is preferably equipped with guide ribs on the sides guided in the lower housing part below the flanges.
  • the guide ribs can be diagonally offset from one another.
  • the upper housing part and the lower housing part can be coded to one another so that they can only be plugged into one another in a certain position.
  • Each is a quenching chamber for blowing out the arc gases Arc blowout openings assigned, which are preferably formed between the upper housing part and cover by corresponding recesses in the upper housing part.
  • connection terminals which are preferably accommodated below the protruding flanges of the upper housing part in the lower housing part, corresponding through holes are provided in the flanges of the upper housing part.
  • the upper part of the housing with the quenching chamber area can be lifted off the switchgear without having to disconnect the connections.
  • the constructive design of hood-shaped, cross-sectionally T-shaped housing upper part and housing lower part with a U-shaped recess for inserting the housing upper part also enables a pleasing shape, which can be emphasized by different colors, whereby the drive area and contact area can be distinguished by two colors.
  • the lower housing part 2 in which the drive and the switching devices are accommodated, is also set off in color from the upper housing part 3, which accommodates the arcing chamber area and comprises the switching room.
  • the side view of the switching device 1 shown in Figure 1 is suitable for the attachment of auxiliary switches.
  • the connecting terminals are arranged on the sides shown in FIGS. 3 and 4 in the lower housing part 2.
  • the terminals 6 are accessible through recesses 60 in the lower housing part.
  • the clamping screws 8 can be actuated via through holes 35 in the upper housing part.
  • the upper housing part 2 sits, see FIG. 1, in a U-shaped recess 20 of the lower housing part 2 and lies with lateral flanges 31, 30 on the two opposite sides of the housing side of the lower housing part 2, which receive the connection contacts.
  • the upper housing part 3 which, see FIG. 2, is T-shaped in cross section with the protruding flanges 30, 31 along two mutually opposite sides, is covered on the upper side with the cover 4, which is continuous in a flat recess on the two T sides 33 of the upper housing part sits and is flush with the top.
  • the opening 40 for the switch position indicator is formed in the center of the housing cover 4.
  • the cover 4 can also be screwed into the corresponding lower screw holes in the lower part of the housing by means of screws 42, see FIG. 5, for which purpose the screws are inserted through holes 41 in the cover 4.
  • vertically extending guide ribs 32a, 32b are provided on the side of the upper housing part 3 below the projecting flanges.
  • grooves are provided in the lower housing part for insertion.
  • Through holes 35 are formed in the overhanging flanges 30, 31 in accordance with the arrangement of the connecting terminals or clamping screws.
  • recesses 34 are provided in the upper part of the flanges as far as the recess 33 receiving the cover 4, so that openings 5 are formed between the cover edge and recess 34 into the interior of the upper housing part, which are used for the escape of the arc gases from the Extinguishing chambers serve.
  • the outer edge 19 of the upper housing part, which also form outer edges 19 of the switching device 1, are preferably rounded, the upper side of the flanges 30, 31 being slightly beveled to the outside.
  • the upper housing part 3 is designed according to FIG.
  • the upper housing part is divided into three arcing chamber areas 9, 10, 11 by two intermediate walls 36, 37.
  • These quenching chamber areas are in turn divided into the chambers 9a, 9b, 10a, 10b and 11a, 11b by the bridges 301, 302, 303 bridging the intermediate walls or housing wall and intermediate wall in the central area.
  • These bridges serve to support the commutation plates.
  • the individual chambers are provided opposite each other with vertically extending projecting ribs 308, between which insertion grooves 307 for the extinguishing plates are formed.
  • the quenching plates are then inserted from above and are held by the insulating plates provided laterally in the region of the projecting ribs 308, which are seated on the ribs 308, while the quenching plates are guided in the grooves 307.
  • the intermediate walls 36, 37 are made relatively thick and have a parallel arrangement in the area of the bridges deep insertion slots 38, 39. Since the intermediate walls 36, 37 end below the recess 33 for inserting the cover in the upper part of the housing, webs 309, 310 are also formed on the intermediate walls to increase the leakage current path between the commutation plates.
  • Push-through openings 311 for the fastening screws 42 of the cover on the lower housing part are provided in two of the mutually opposite intermediate walls and attached webs.
  • Recesses are provided in the middle of the bridges, a large recess 305 being formed in the central bridge in order to accommodate the switch position indicator 17, see FIG. 5.
  • a smaller recess 304, 306 is provided in each of the two outer bridges 301, 303, through which latching tongues of the cover are inserted in order to clamp it on the upper housing part.
  • FIGS. 7a, 7b and 7c show the commutation plate 7 in a front view, a top view and a side view.
  • the commutation plate has a central contact area 76 for resting on the bridges of the upper housing part.
  • the end legs of the commutation plate are bent twice in a U-shape with the legs 71, 72, the end leg 72 being resiliently movable in the direction of the arrow P, see FIG. 7a.
  • the deflecting surface 73a for the arc is formed facing outward.
  • protruding cams 74, 75 are formed on the outer surface of the outer leg 72, which form contact surfaces on the insulating plates of the quenching plates.
  • the commutation plate 7 has the push-through hole 70 for latching cams of the cover.
  • the extinguishing plates 51 are, in the example shown, 4 pieces, in the upper part between two arranged laterally Insulating plates 52 held, in which they are inserted, for example, with corresponding cams.
  • the insulating plates 52 together with the quenching plates 51 form a quenching chamber 50 as a package.
  • Such a package is inserted into the lateral grooves formed by the ribs on the walls of the chamber 9a, 9b, 10a, 10b, 11a, 11b, see FIG. 12, from above hung here, with the insulating plates 52 resting on the ribs on the chamber walls.
  • the switching position indicator 17 made of insulating material is hung over the middle commutation plate 7 and passed through the opening 305, see FIG. 12, of the bridge 302.
  • the switch position indicator 17 is held against the commutation plate 7 by means of the compression spring 18. With a corresponding shifting of the switching bridge 23 according to FIG. 6, the position of the switching indicator 17 in the recess 40 of the cover 4 indicates the switching position, the compression spring 18 being compressed when moving upward.
  • the end leg 72 of the commutation plate presses with its projecting cams 74, 75 against the insulating plates 52 of the package with the extinguishing plates 51 and presses them against the housing wall.
  • the view according to FIG. 10 also shows the configuration of the extinguishing plates 51 which are frayed on the underside in a W-shape 53.
  • FIG. 11 shows the bottom view of the upper housing part 3 with the deionization device inserted, as explained above.
  • FIG. 6 shows the section through the switching device 1 in its entirety with the lower housing part and upper housing part 3 and cover 4.
  • the magnet 200 is accommodated in the center of the lower housing part 2, surrounded by the coil 21, above which the armature 22, which carries the switching bridge 23.
  • the switching movement of the armature 23 is vertical.
  • the contact bridges 24, which are equipped at their ends with the movable contacts 25 to which the fixed contacts 26 are assigned in the lower housing part, are mounted in the switching bridge perpendicular to the switching direction.
  • the connection terminals 6 are accommodated with the clamping screws 8 in corresponding housing chambers of the lower housing part 2.
  • FIG. 1 shows the section through the switching device 1 in its entirety with the lower housing part and upper housing part 3 and cover 4.
  • the switch contact 25, 26 is open and the switch position indicator 17 is shifted with the switch bridge and the contact bridge 24 against the spring force of the spring 18 through the recess 40 of the cover 4 into its upper end position.
  • the commutation plate 7, which rests on the bridge parallel to the contact bridges 24, is however also fixed in its position by webs of the cover 4 projecting on the underside and by clamping onto the insulating plates of the quenching plate packs.
  • the quenching plates are arranged vertically, ie parallel to the switching direction, as are the double U-shaped bent end legs 71, 72 of the commutation plates 7.
  • the arc that forms when the switch contacts 25, 26 are opened is transferred into the by the guide surfaces of the commutation plate Extinguishing plates 51 derived quenching chamber derived, the resulting gases of the arc can flow through the openings 5 at the upper edge between the cover and the upper housing part through the recesses 34.
  • the housing upper part 3 with cover 4 is fixed in the housing lower part 2, as explained above, by means of the screws 42. After loosening these screws 42, the upper part 3, see FIG. 2, can be lifted completely upwards out of the lower housing part 2 of the switching device 1 without any connections or connections having to be released.
  • the connecting terminals are accommodated in the lower housing part in housing chambers which are laterally shielded from the outside, these housing chambers being closed to the inside by the upper housing part 3 used to form chambers.
  • the clamping screws 8 of the terminals 6 then remain accessible through the through holes 39 of the upper housing part.
  • the commutation plate 7 is inserted by compressing the outer end legs of the commutation plate in the direction of the switching axis of the armature in the area of the upper housing part which forms the quenching chambers, the insulating plates of the quenching plate packs forming the counter bearing and the outer legs 72 pressed resiliently against the leg 71, see FIG 7a, press and fix both the commutation plate and the quenching plate packs in the upper housing part 3 on the inner wall.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
EP92103912A 1991-03-25 1992-03-07 Elekromagnetisches Schaltgerät mit Deionisierungseinrichtungen Expired - Lifetime EP0505794B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109717 1991-03-25
DE4109717A DE4109717C1 (enExample) 1991-03-25 1991-03-25

Publications (2)

Publication Number Publication Date
EP0505794A1 EP0505794A1 (de) 1992-09-30
EP0505794B1 true EP0505794B1 (de) 1995-11-15

Family

ID=6428129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103912A Expired - Lifetime EP0505794B1 (de) 1991-03-25 1992-03-07 Elekromagnetisches Schaltgerät mit Deionisierungseinrichtungen

Country Status (3)

Country Link
EP (1) EP0505794B1 (enExample)
AT (1) ATE130461T1 (enExample)
DE (2) DE4109717C1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814411C1 (de) * 1998-03-31 1999-07-15 Moeller Gmbh Elektromagnetisches Schaltgerät mit Löschkammern

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19709843A1 (de) * 1997-02-28 1998-09-03 Siemens Ag Kammerdeckelbefestigung für Lichtbogenlöschkammern für Niederspannungs-Leistungsschalter
DE20316027U1 (de) 2003-10-18 2004-01-15 Moeller Gmbh Elektrisches Schaltgerät mit Einrichtung zur Lichtbogenlöschung
DE102012112779A1 (de) * 2012-12-20 2014-06-26 Eaton Electrical Ip Gmbh & Co. Kg Elektrisches Schaltgerät

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196750B (de) * 1962-05-21 1965-07-15 Licentia Gmbh Elektrisches Schaltgeraet
DE7327820U (de) * 1973-07-30 1973-11-08 Bbc Ag Elektrisches Schaltgerat, msbe sondere Schutz
DE2608950A1 (de) * 1976-03-04 1977-09-08 Bbc Brown Boveri & Cie Elektrisches schaltgeraet, insbesondere elektromagnetisches schaltschuetz
KR860002080B1 (ko) * 1982-01-28 1986-11-24 카다야마히도 하지로 전력 개폐장치
JPS60117546U (ja) * 1984-01-17 1985-08-08 三菱電機株式会社 電磁接触器
US4684772A (en) * 1985-04-09 1987-08-04 Square D Company Mounting apparatus for arc quenching plates for electric contacts
DE8531352U1 (de) * 1985-11-06 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Lichtbogenlöschkammer
DE8531354U1 (de) * 1985-11-06 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Lichtbogenlöschkammer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814411C1 (de) * 1998-03-31 1999-07-15 Moeller Gmbh Elektromagnetisches Schaltgerät mit Löschkammern

Also Published As

Publication number Publication date
EP0505794A1 (de) 1992-09-30
DE4109717C1 (enExample) 1992-09-03
DE59204295D1 (de) 1995-12-21
ATE130461T1 (de) 1995-12-15

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