EP0592829A1 - Relais de surcharge a combiner a des contacteurs - Google Patents

Relais de surcharge a combiner a des contacteurs Download PDF

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Publication number
EP0592829A1
EP0592829A1 EP93114815A EP93114815A EP0592829A1 EP 0592829 A1 EP0592829 A1 EP 0592829A1 EP 93114815 A EP93114815 A EP 93114815A EP 93114815 A EP93114815 A EP 93114815A EP 0592829 A1 EP0592829 A1 EP 0592829A1
Authority
EP
European Patent Office
Prior art keywords
overload relay
combined
connection
connections
phase
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
EP93114815A
Other languages
German (de)
English (en)
Other versions
EP0592829B1 (fr
Inventor
Klaus Lankuttis
Gerhard Rossmann
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 EP0592829A1 publication Critical patent/EP0592829A1/fr
Application granted granted Critical
Publication of EP0592829B1 publication Critical patent/EP0592829B1/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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts
    • H01H2011/0037—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts with removable or replaceable terminal blocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device

Definitions

  • the invention relates to overload relays according to the preamble of claim 1.
  • it relates to overload relays with thermally delayed overcurrent tripping, with magnetic short-circuit tripping or with a combination of both types of tripping, but also with overload relays equipped with current transformers.
  • a typical area of application is motor protection.
  • Such an overload relay to be combined with a contactor with bimetal releases for each current phase to be protected is known from FR 2 625 603 A1.
  • this overload relay On the side facing the contactor, this overload relay has built-in plug-in connections as phase connections, which can be connected to the contactor's terminal connections.
  • the plug connections On the one hand, the plug connections are in the phase distance and in the phase height, i.e.
  • the connection geometry is compatible with the terminal connections of the contactor and, on the other hand, the overload relay can be snapped onto the contactor.
  • the overload relay On the side facing the load, the overload relay has permanently installed terminal connections as phase connections.
  • the terminal connections of the overload relay do not match the terminal connections of the contactor in terms of their connection geometry, which makes it difficult for the user to configure, install, maintain and maintain.
  • the scope of application is limited to the combination with contactors of the same type and size. It is not possible to set up the components often with this solution.
  • the overload relay is provided on both sides with flat connections that have holes for screw connections and are compatible with the flat connections of the contactor in terms of their connection type and geometry.
  • the disadvantage of these solutions remains that the overload relays cannot be combined with contactors of different connection types and geometries, or only in a complex manner. Comparable problems arise with regard to different phase conductors coming from the overload relay and leading to the load.
  • an overload relay with load-side terminal connections is designed as a basic device, to which a contact-side connection block designed as a housing-free connection angle module is screwed in a height-adjustable manner within certain limits.
  • the connection brackets are plug-in connections which enable direct connection to a contactor - but only if the contactor is equipped with terminal connections.
  • the overload relay can only be attached to an assembly base using the basic device.
  • a connection block with terminal connections is provided for the individual installation of the overload relay.
  • an overload relay is known from DE 84 34 232 U1 that consists of a basic device with load-side terminal connections and a contactor-side, housing-encapsulated connection block.
  • the connection block is detachably connected electrically via plug connections and mechanically to the basic device via snap connections.
  • the overload relay With a connection block provided with terminal connections, the overload relay is suitable for stand-alone installation.
  • the overload relay can be combined directly with a contactor thanks to a connection block provided with plug connections - but only if this is equipped with terminal connections.
  • the overload relay can also be connected to contactors with different phase spacings by selecting the elbow of the plug connections.
  • the load-side compatibility of the overload relay with regard to the phase spacing of a contactor is also provided - however, a load-side adaptation to contactors with different phase spacings is not possible. It can only be attached to an assembly base using the basic device. The plug connection between the basic device and the connection block makes the overload relay unsuitable for use in higher current ranges.
  • connection blocks that can be connected to the basic device in a simple manner can be the same or different on the contactor and load side in order to meet the most varied connection and combination possibilities with regard to the associated contactor and the load side.
  • the modules of the overload relay can each be mounted individually or expediently either alone via the basic device or only via the connection blocks on the assembly base. When the assembly is carried out together, the other module or modules are also supported. The latter takes place in a particularly advantageous manner via the mechanical and electrical connection of the connection blocks to the basic device.
  • the sub-claims 2 and 3 indicate advantageous or expedient embodiments of the solution according to claim 1.
  • the compatibility of the terminal block on the contactor side serves in particular to directly connect the overload relay and contactor.
  • the load-side compatibility of the connection block facilitates, among other things. for the user, the geometric and functional assignment of the load side of the overload relay to the output side of the contactor and thus promotes understanding of the system (so-called recognition value and degree of familiarity).
  • the terminal blocks of a series come from, which advantageously meet the connection conditions for combining the overload relay with different contactors, which - apart from the differences in the electrical parameters - differ in terms of their connection type, their phase height and their phase spacing.
  • the connection blocks thus also satisfy different embodiments of phase conductors on the output side or, if appropriate, downstream switching devices.
  • the terminal blocks of the series can in principle be used both on the contactor side and on the load side. For a multitude of combinations with different contactors, this flexible module system - of course taking into account the electrical conditions - only requires a single basic device of the overload relay.
  • the base unit can be adapted to the respective connection conditions in a suitable, generally different manner, both on the contactor side and on the load side. So that can one the module system can be adapted to any newly developed contactor in a contactor series and any other to a newly developed contactor series from the same manufacturer or to contactors from other manufacturers. It is also possible to retrofit a circuit with a contactor with an overload relay, whereby - as is generally desired - the load-side connection type and connection geometry can be obtained, which brings considerable advantages for the user, inter alia by using the same tools for connecting the contactor and Overload relay. The advantages described above for claim 1 and not mentioned here also occur here.
  • the plug connections according to claim 9 enable in particular the direct connection of the overload relay to a contactor via its relay-side terminal connections. It is particularly advantageous if an identical plug-in block of the contactor is used as the connection block.
  • the design of the plug connections according to claim 11 results in a particularly advantageous connection possibility between the connection block and the basic device.
  • the flat connections of the plug connections designed according to claim 12 allow not only the plug connection via terminal connections of a contactor, but also the screw connection with flat connections a contactor or with incoming or outgoing flat conductors.
  • the feature according to claim 13, in particular in a simple embodiment according to claim 14, allows the phase connections of the overload relay to be adapted to the phase height of the relay-side contactor connections or to other incoming or outgoing connections or conductors within certain limits.
  • an overload relay provided with plug-in connections can be retrofitted with terminal connections in order, for example, to enable its individual installation in a simple manner. It is particularly advantageous if, according to claim 16, a connection carrier that can be taken over by the contactor is used, which, for example, when the connection carrier is used on the load side in the interest of understanding the system for the user, gives the same visual impression at the outputs of the contactor and the overload relay.
  • the terminal connections according to claim 17 also serve for the individual installation of the overload relay and for easier understanding of the system.
  • the arrangement of the screw connection between the terminal block and basic device according to claim 18 is particularly useful.
  • a terminal block which can be taken over by the contactor has the advantages already mentioned with claim 16.
  • the use of box terminals according to claim 20 is also expedient.
  • the covering of the terminal connections according to claim 21 serves to protect against contact and is particularly expedient in the case of a cover hood that can be taken over by the contactor.
  • the contactor contains, for each of the three phases, mains-side terminal connections 4 and relay-side terminal connections 6.
  • the contactor 2 also contains snap fastening means 8 for snapping the contactor 2 onto a top-hat rail, not shown.
  • the overload relay 10 consists of a basic device 12, a contactor-side connection block 14 and a load-side connection block 16.
  • the basic device 12 contains known overload protection devices for protecting the downstream load against overload, in particular against overcurrent, and is encapsulated in a molded housing.
  • the basic device 12 has snap fastening means 18 on its underside.
  • An auxiliary switch 20 known per se is attached to its upper side.
  • the contactor-side connection block 14 is encapsulated in a molded housing and contains three phase connections designed as plug connections 22, which project into the terminal spaces of the relay-side terminal connections 6 of the contactor 2 and are connected to them. There is thus compatibility, that is, both the type of connection as well as the connection geometry defined by the phase distance 21 and the phase height 23, between the relay-side phase connections of the contactor 2 and the contactor-side phase connections of the overload relay 10.
  • the load-side connection block 16 is also encapsulated in a molded housing and contains three phase connections designed as terminal connections.
  • the connection blocks 14 and 16 each have on their undersides two screw fastening means 24 in the form of lateral approaches with openings.
  • the three modules basic device 12, contactor-side connection block 14 and load-side connection block 16 are mechanically and electrically connected to one another in a manner described in more detail below.
  • the overload relay 10 can either be fastened on a top hat rail (not shown) using the snap fastening means 18 of the basic device 12 or solely on a mounting plate using the screw fastening means 24 of the connection blocks 14 and 16.
  • the overload relay 10 corresponds in its load-side connection type and geometry to the relay-side connection type and geometry of the contactor 2. This coincidence of the phase connections considerably simplifies the understanding of the system and the handling of the system components by the recognition effect for the user.
  • connection plates 34 made of conductive material are fastened in phases by means of grooves 36 and retaining screws 38.
  • the connection plates 34 are partially accessible from the outside through rectangular openings 40 and have threaded bores 42 in these areas.
  • connection plates 34, grooves 36, retaining screws 38, openings 40, threaded holes 42, blind holes 44, connecting lugs 46 and openings 48 are arranged on the opposite molded housing surface facing the contact-side connection block 14.
  • the contactor-side connection block 14 consists of a molded housing in the form of a rib-reinforced molded shell 50 and the three plug connections 22.
  • the plug connections 22 merge in one piece into a first connection piece 52 bent at right angles.
  • the plug connections 22 or connecting pieces 52 are inserted between two L-shaped protrusions 54 which are directed upwards and arranged approximately in phase height. They are limited in their vertical movement downwards by the upper inner transverse rib 56 and upwards by applying two lateral stop angles 58 of the first connection pieces 52 to the upper, horizontal legs of the L-shaped formations 54.
  • the inserted plug connections 22 or connection pieces 52 are limited by the application of the stop angle 58 to the lower, vertical legs of the L-shaped formations 54.
  • two downward-pointing connecting pins 60 are formed on the lower part of the molded shell 50 and two pins 62 directed towards the basic device 12 in the upper half of the molded shell 50.
  • the actual electrical and mechanical connection is made by three socket head screws 64, each of which extends with its shaft through an elongated hole 66 of the vertically directed legs of the first connecting pieces 52 and is screwed into the threaded bores 42 of the associated connecting plates 34 of the basic device 12. This is done with the aid of a screwdriver 68, which engages with its tip through a screw opening 70 inserted in the molded shell 50 below the plug connections 22 and acts in the direction of the phase access.
  • the type of mounting of the plug connections 22 or connection pieces 52 in the molded shell 50 and the connection via the elongated holes 66 allow, within certain limits, the phase height of the plug connections 22 - and thus the phase height of the overload relay on the contactor side - to be adapted to the phase height of the upstream contactor .
  • the load-side connection block 16 consists of a further molded housing 72 and three clamp connections mounted therein, which are designed as frame clamps 74.
  • a second connection piece 78 which is bent at right angles, is inserted between two parallelepiped-shaped formations 76 of the further molded housing 72 in the middle height of the frame clamps 74.
  • the load-side connection block 16 is locked in the associated openings 48 and blind holes 44 of the basic device 12 by means of two connecting pins 60 and two pins 62.
  • FIG. 6 illustrates how the basic device 12 can be connected on the contactor side in addition to the contact-side connection block 14 described with FIG. 4 with a selection of further connection blocks 114, 214, and 314 from a series in order to meet a wide variety of connection conditions.
  • the contactor-side connection block 114 shown in the lower part of the figure is provided with plug-in connections designed to form flat connections 82 and provided with connecting bores 84.
  • the flat connections 82 can be clamped directly to suitable terminal connections of a contactor, they can be screwed directly to compatible flat connections of a contactor, but they can also be connected to flat conductors when the components of the contactor and overload relay are installed individually, which are connected at the other end to a contactor.
  • connection carrier designed as a box terminal block 86 is pushed onto the flat connections 82 and mechanically and electrically connected to them via screws, not shown.
  • An additional advantage here is that a connection carrier is used as box terminal block 86, which comes from the contactor series to be combined with the overload relay.
  • the contact-side connection block 214 shown in the middle also has plug connections 88 as phase connections, which merge in one piece into third connection pieces 89. In order to establish compatibility with regard to the connection geometry of larger contactors, the third connection pieces 89 were made in two to one another vertical directions.
  • the contactor-side connection block 314 shown in the upper part of the figure is used for the individual installation of the components and is equipped with known terminal connections, into which the phase conductors coming from the contactor can be hung from above. After the phase conductors have been connected, the terminal connections 90 are secured against contact by a cover 92 which can be fitted from the front. A further advantage here is that the cover 92 was taken over by a contactor of the row of contactors to be combined with the overload relay.
  • FIG. 7 illustrates how the basic device 12 can be connected on the load side in addition to the load-side connection block 16 described with FIG. 5 to a selection of further connection blocks 116 and 216 from a series in order to meet the most varied of connection conditions.
  • the load-side connection block 116 shown in the lower part of the figure is identical to the contact-side connection block 114 from FIG. 6.
  • the flat connections 82 are connected to flat conductors which are connected at the other end to the load. If necessary, the box terminal block 86 already described with FIG. 6 can be placed on the flat connections 82.
  • the load-side connection block 216 with terminal connections 90 shown in the upper part of FIG. 7 is in turn identical to the protective-side connection block 314 explained in more detail in FIG. 6.
  • the cover 92 has also already been described there.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Fuses (AREA)
EP93114815A 1992-10-14 1993-09-15 Relais de surcharge a combiner a des contacteurs Expired - Lifetime EP0592829B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4234619 1992-10-14
DE4234619A DE4234619C2 (de) 1992-10-14 1992-10-14 Mit Schützen zu kombinierendes Überlastrelais

Publications (2)

Publication Number Publication Date
EP0592829A1 true EP0592829A1 (fr) 1994-04-20
EP0592829B1 EP0592829B1 (fr) 1997-04-09

Family

ID=6470436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114815A Expired - Lifetime EP0592829B1 (fr) 1992-10-14 1993-09-15 Relais de surcharge a combiner a des contacteurs

Country Status (5)

Country Link
US (1) US5483212A (fr)
EP (1) EP0592829B1 (fr)
AT (1) ATE151564T1 (fr)
DE (1) DE4234619C2 (fr)
ES (1) ES2101184T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
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EP0774768A1 (fr) * 1995-11-14 1997-05-21 Eaton Corporation Système de commande modulaire pour contacteur
WO1997025730A1 (fr) * 1996-01-09 1997-07-17 Siemens Aktiengesellschaft Composant de cablage
FR2841377A1 (fr) * 2002-06-25 2003-12-26 Schneider Electric Ind Sa Ensemble de protection et de commande electromagnetique

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KR100789448B1 (ko) * 2006-12-29 2007-12-28 엘에스산전 주식회사 배선용 차단기용 단자 모듈 조립체 및 상기 단자 모듈조립체를 장착한 배선용 차단기
EP2223323A1 (fr) * 2007-12-21 2010-09-01 Abb Ag Appareil de protection et appareil de commande à combinaison
DE102008018261A1 (de) * 2008-04-01 2009-10-15 Siemens Aktiengesellschaft Stromwandlerbaugruppe und elektromechanische Schaltvorrichtung
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EP0774768A1 (fr) * 1995-11-14 1997-05-21 Eaton Corporation Système de commande modulaire pour contacteur
WO1997025730A1 (fr) * 1996-01-09 1997-07-17 Siemens Aktiengesellschaft Composant de cablage
FR2841377A1 (fr) * 2002-06-25 2003-12-26 Schneider Electric Ind Sa Ensemble de protection et de commande electromagnetique
EP1376637A1 (fr) * 2002-06-25 2004-01-02 Schneider Electric Industries SAS Ensemble de protection et de commande électromagnétique.
US6840823B2 (en) 2002-06-25 2005-01-11 Schneider Electric Industries Sas Electromagnetic protection and control assembly

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DE4234619C2 (de) 1994-09-22
ATE151564T1 (de) 1997-04-15
DE4234619A1 (de) 1994-05-05
US5483212A (en) 1996-01-09
EP0592829B1 (fr) 1997-04-09
ES2101184T3 (es) 1997-07-01

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