EP0727091B1 - Überspannungsschutzvorrichtung - Google Patents

Überspannungsschutzvorrichtung Download PDF

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Publication number
EP0727091B1
EP0727091B1 EP94921523A EP94921523A EP0727091B1 EP 0727091 B1 EP0727091 B1 EP 0727091B1 EP 94921523 A EP94921523 A EP 94921523A EP 94921523 A EP94921523 A EP 94921523A EP 0727091 B1 EP0727091 B1 EP 0727091B1
Authority
EP
European Patent Office
Prior art keywords
rocker
casing
ram
web
guide
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
EP94921523A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0727091A1 (de
Inventor
Ernst Hammermayer
Herbert Ettlinger
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria AG
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 Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0727091A1 publication Critical patent/EP0727091A1/de
Application granted granted Critical
Publication of EP0727091B1 publication Critical patent/EP0727091B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • 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
    • H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
    • H01H2037/763—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts the spring being a blade spring

Definitions

  • the invention relates to an overvoltage protection device with two or more protective elements, which are accommodated in a housing and are designed as varistors, the electrodes on the earth line side of which are electrically conductively connected to one another by a strip with a contact piece, the other electrodes on the network side being connected to the protective elements in series with separating devices with contact pieces are connected.
  • the invention has for its object to improve known devices of the type mentioned and to simplify the design without adversely affecting the protective properties.
  • FIG. 2 shows the combination of block arrester and device base of FIG. 1 from the side
  • Fig. 14 is a side view of the rocker.
  • the information “top”, “bottom”, “front”, “rear” relates to the orientation of the device base 1 and the insert element 2 locked in this in FIGS. 1 and 2, in which, for example, an overvoltage protection device is housed.
  • the device base 1 is essentially U-shaped in cross-section (FIG. 2), a device consisting of a hook-like extension 3 and a spring-loaded snap slide 4 being provided on the rear (ie “rear”), via which the device base 1 , as is known per se, can be snapped onto, for example, a mounting rail mounted in a control cabinet.
  • connection terminals 6 for three outer conductors and a connection terminal 6 'for the neutral conductor are accommodated, the design of which can be seen in more detail in FIGS. 5 and 6.
  • connection terminal 8 for the earth line and two auxiliary contact terminals 9 and 10 for an integrated auxiliary switch (make contact) are accommodated.
  • each contact terminal 6, 6 'and 8 is a contact angle 11 with which a resilient contact 12 is connected.
  • the contacts 12 protrude from the legs 5 and 7 in the web of the device base 1.
  • the free ends of the contacts 12 are pressed forward by contact springs 13, that is, into the space between the two legs 5 and 7 of the device base 1.
  • a leaf spring 17 is connected, which can be bent in a manner to be described in more detail below by an actuating pin 37 in contact with the auxiliary contact terminal 10, so that the auxiliary contact terminals 9 and 10 are electrically conductively connected to one another.
  • the contacts 12 are accessible through openings 18 in the forward-facing middle part 19 of the housing cover 20 which closes the device base 1 on the inside (FIGS. 3 and 4).
  • a slot 27 open to the inside thereof is provided, through which the contact spring 17 is accessible.
  • the insert element 2 has a housing comprising a cover 30 and a trough 31.
  • a contact 33 and four contacts 34 protrude through the bottom of the housing cover 30 in the position of use, which contacts through the openings 18 in the wall part 19 of the housing cover 20 of the device base 1 the contacts 12 of the contact terminal 8 for the ground line, the contacts 12 of the three contact terminals 6 for the outer conductor and the contact terminal 6 'for the neutral conductor rest when the insert element 2, as shown in FIGS. 1 and 2, with the device base 1 is locked.
  • a projecting rib 35 is provided, which engages in the slot 27 when the insert element 2 is inserted in the device base 1, so that only a correct mounting of the insert element 2 on the device base 1 is possible.
  • the actuating pin 37 projects, which interacts with the contact spring 17 in the device base 1 in a manner to be described.
  • each snap arm 40 On the cover 30 of the housing of the insert element 2, two snap arms 40 are provided which are made in one piece with it, which engage in corresponding recesses in the side walls of the trough 31 of the housing of the insert element 2.
  • Each snap arm 40 carries an outwardly facing actuating projection 41 and two likewise outwardly facing latching lugs 42, which engage behind the latching projections 25 of the device base 1 when the insert element 2 is locked with the device base 1, as shown in FIG. 2.
  • the actuating projections 41 are easily accessible thanks to the recessed handles 23, 24.
  • the recessed handles 23, 24 in the installation position that is to say when the combination of device base 1 and insert element 2 is mounted in a switch box, are covered by a panel, ie are not readily accessible. Unauthorized handling is at least hampered.
  • tongues 45 are formed on the cover 30, which at their free ends have locking projections (not visible) which point inwards.
  • the tongues 45 are received in grooves 46 in the outer sides of the two longitudinal walls of the tub 31, their latching projections engaging in holes 47 when the lid 30 is placed on the tub 31.
  • the holes 47 are provided at the rear ends of the grooves 46.
  • the inner structure of the insert element 2 designed as a surge protection device is described below with reference to FIGS. 9 to 14.
  • each protective element 51 in the form of metal oxide varistors is accommodated in the trough 31 in a receiving space which is separated on one side by a wall 50.
  • Each protective element 51 is inserted into its own receiving space, the receiving spaces being separated from one another by partition walls 52.
  • conductive electrodes 53, 54 On both sides of the protective elements 51 are electrical with them conductive electrodes 53, 54 connected.
  • the arrangements of protective element 51 and the two electrodes 53, 54 are fixed in their receiving spaces by a (polyurethane) potting compound 55.
  • the partition walls 52 are formed in the invention only so long that they end below the upper edge 56 of the tub 31.
  • the electrodes 54 are electrically conductively connected to a common conductor rail 58 which leads into the contact 33 (see FIG. 9).
  • the electrodes 54 form the “ground side” of the protective elements 51.
  • Each separating device consists of a plunger in the form of a tubular rivet 60, which is soldered to a flag of the electrodes 53 by means of soft solder 61.
  • An insulating piece 100 is fixed to an angled part 63 of the electrode 53, a sleeve-shaped part of the insulating piece 100 serving as a guide for the tubular rivet 60 and slidably receiving the tubular rivet 60 therein.
  • a helical compression spring 62 is inserted over the insulating piece 100 as a release spring and is inserted between the widened end of the insulating piece 100 fastened to the angled part 63 of the electrode 53 and a contact plate 64 with pretension.
  • the contact plate 64 lies with its side facing away from the helical compression spring 62 against a collar 65 provided at the end of the tubular rivet 60.
  • a flexible conductor cable 66 is connected to the contact plate 64 in an electrically conductive manner, e.g. welded, which leads to the respective contact 34.
  • a rocker is also pivotable in the insert element 2 70 stored, which is shown in Figs. 13 and 14 by itself.
  • the rocker 70 is designed as an essentially U-shaped bracket and has a bearing journal 73, 74 on each of its two legs 71, 72.
  • the bearing journals 73, 74 are in bearing seats 75, 76 on the narrow walls of the tub 31 about an axis 77 ' pivoted.
  • lugs 78 are provided, which are assigned with their hemispherically curved front sides 79 to the end of the tubular rivet 60 having the collar 65.
  • the aforementioned actuating pin 37 is also slidably mounted.
  • the actuating pin 37 has a thickened end 80 which engages in a recess 81 on the end of the web 77 of the rocker 70 which carries the longer leg 72.
  • a return spring 83 is inserted, which holds the actuating pin 37 in contact with the web 77 of the rocker 70.
  • solder joint 61 which connects the tubular rivet 60 to the angled part 63 of the lug of the electrode 53, is brought to a certain temperature, this solder joint 61 opens and the tubular rivet 60 is driven by the helical compression spring (release spring) 62, by the angled part 63 of the electrode 53 moves away and is guided in the insulating piece 100 during this movement.
  • This insulating piece 100 also ensures the insulation between the angled part 63 of the electrode 53 and the release spring 62 after a release, ie a disconnection process.
  • this disconnection process creates an air gap of, for example, 5 mm between the angled part 63 of the electrode 53 and the tubular rivet 60, so that the necessary dielectric strength is ensured.
  • the free end of the longer leg 72 of the rocker 70 serves as a display device for all pole sections of the overvoltage protection device.
  • the viewing window 39 in the bottom of the tub 31 pointing forward in the position of use (FIGS. 1 and 2), either the green-colored end face 90 of the leg 72 or the red-colored end face 91 of a pointer 92, which, as shown in FIG. 14 or 12 can be seen, is locked with the free end of the longer leg 74 of the rocker 70, visible.
  • the display which is visible in the viewing window 39 changes from green (end surface 90) to red (end surface 91) and thus indicates that an exchange of the insert element 2 is necessary.
  • test contacts 95 are provided, which are connected to an outer conductor (the upper test contact 95 in FIG. 10) or to earth (the lower test contact 95 in FIG. 10). As mentioned, the test contacts 95 are accessible through the openings 38 which are closed with plastic domes and which are likewise provided in the base of the trough 31.
  • the invention can be represented as follows, for example:
  • An overvoltage protection device 2 has a plurality of varistors 51 accommodated in a housing, the electrodes of which on the ground line side are electrically conductive with one another via a strip 58 are connected.
  • the network-side electrodes 53 of the varistors are connected to contact pieces 34 via disconnection devices 60, 61.
  • the separating devices consist of a plunger designed as a tubular rivet 60, which is connected to the electrodes 53 via a soft soldering point 61.
  • the plunger 61 is slidably received in a guide 100 made of insulating material.
  • Each of the plungers 60 cooperates with one of its ends with a rocker (70) which is common to all disconnection devices and which can be pivoted in the overvoltage protection device.
  • the soft solder connection 61 opens and the plunger 60 in question is pivoted, driven by a tripping spring 62, the rocker 70, which in turn displaces an actuating pin 37 so that further switching operations are triggered.
  • the rocker 70 also carries a display device 90, 91, which is visible through a window in the housing of the surge protection device (2), so that it can be seen from the outside that one of the disconnection devices 60, 61 has triggered.
  • the fact that a single rocker 70 is assigned to all disconnection devices results in a simple construction of the overvoltage protection device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Thermistors And Varistors (AREA)
  • Fuses (AREA)
  • Amplifiers (AREA)
  • Valve Device For Special Equipments (AREA)
EP94921523A 1993-11-02 1994-07-15 Überspannungsschutzvorrichtung Expired - Lifetime EP0727091B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0220193A AT400781B (de) 1993-11-02 1993-11-02 Überspannungsschutzvorrichtung
AT2201/93 1993-11-02
PCT/AT1994/000094 WO1995012893A1 (de) 1993-11-02 1994-07-15 Überspannungsschutzvorrichtung

Publications (2)

Publication Number Publication Date
EP0727091A1 EP0727091A1 (de) 1996-08-21
EP0727091B1 true EP0727091B1 (de) 1997-08-27

Family

ID=3529880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94921523A Expired - Lifetime EP0727091B1 (de) 1993-11-02 1994-07-15 Überspannungsschutzvorrichtung

Country Status (11)

Country Link
EP (1) EP0727091B1 (es)
AT (2) AT400781B (es)
AU (1) AU677682B2 (es)
CZ (1) CZ284812B6 (es)
DE (1) DE59403893D1 (es)
DK (1) DK0727091T3 (es)
ES (1) ES2109003T3 (es)
HU (1) HU215889B (es)
NO (1) NO308818B1 (es)
PL (1) PL174999B1 (es)
WO (1) WO1995012893A1 (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008026555A1 (de) 2008-06-03 2009-12-10 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
CZ301709B6 (cs) * 2005-05-04 2010-06-02 Kiwa Spol. S R. O. Prepetová ochrana
CN101490916B (zh) * 2006-07-18 2012-05-23 德恩及索恩两合股份有限公司 用于过电压保护的可插塞的装置组合体
US11817237B2 (en) 2020-03-17 2023-11-14 Dehn Se Surge protection device and modular surge protection system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406207B (de) * 1997-09-30 2000-03-27 Felten & Guilleaume Ag Oester Steckbarer überspannungsableiter
DE10125941B4 (de) * 2001-03-13 2009-09-17 Dehn + Söhne Gmbh + Co. Kg Kompaktanordnung für mehrpolige stoßstromfeste Überspannungsableiter
SI1743346T1 (sl) * 2004-04-19 2011-04-29 Abb France Zaščitna naprava pred prenapetostjo s sredstvom za prekinitev obloka
FR2877154B1 (fr) * 2004-10-22 2006-12-22 Legrand Sa Dispositif perfectionne de protection d'appareils electriques contre des surtensions
DE102006038005B4 (de) * 2006-05-22 2009-04-23 Dehn + Söhne Gmbh + Co. Kg Anschluss- und Basisteil zur Aufnahme eines steckbaren Überspannungsableiters
DE102006030570B4 (de) * 2006-07-03 2009-09-17 Dehn + Söhne Gmbh + Co. Kg Basisteil zur elektrischen und mechanischen Aufnahme mindestens eines in das Basisteil einsteckbaren Überspannungsableiters
DE102008047396B3 (de) 2008-08-22 2010-03-11 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
CN103094013B (zh) * 2011-11-07 2015-12-23 施耐德电器工业公司 电涌保护器的脱扣机构和电涌保护器
AT512255A1 (de) * 2011-12-09 2013-06-15 Eaton Ind Austria Gmbh Überspannungsableiter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805890C2 (de) * 1987-10-24 1995-11-23 Bettermann Obo Ohg Vorrichtung zur Funktionsüberwachung von Überspannungsableitern
DE4000717C2 (de) * 1990-01-12 1994-12-01 Kleinhuis Hermann Gmbh Überspannungsableiter
DE9010246U1 (de) * 1990-07-06 1990-10-31 CITEL 2CP S.A., Nederweert Überspannungsschutzvorrichtung
DE9305796U1 (de) * 1993-04-17 1993-06-17 Dehn + Söhne GmbH + Co KG, 8500 Nürnberg Überspannungsschutzanordnung mit einem in einem Gehäuse untergebrachten Varistor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301709B6 (cs) * 2005-05-04 2010-06-02 Kiwa Spol. S R. O. Prepetová ochrana
CN101490916B (zh) * 2006-07-18 2012-05-23 德恩及索恩两合股份有限公司 用于过电压保护的可插塞的装置组合体
DE102008026555A1 (de) 2008-06-03 2009-12-10 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
WO2009147043A1 (de) * 2008-06-03 2009-12-10 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzgerät mit thermischer abtrennvorrichtung
CN102057449B (zh) * 2008-06-03 2012-09-05 德恩及索恩两合股份有限公司 设有热分离装置的过电压保护器
DE102008026555B4 (de) * 2008-06-03 2016-08-04 DEHN + SÖHNE GmbH + Co. KG. Überspannungsschutzgerät mit thermischer Abtrennvorrichtung
US11817237B2 (en) 2020-03-17 2023-11-14 Dehn Se Surge protection device and modular surge protection system

Also Published As

Publication number Publication date
DK0727091T3 (da) 1997-09-29
ES2109003T3 (es) 1998-01-01
NO961788D0 (no) 1996-05-02
AT400781B (de) 1996-03-25
PL174999B1 (pl) 1998-10-30
AU7236994A (en) 1995-05-23
WO1995012893A1 (de) 1995-05-11
DE59403893D1 (de) 1997-10-02
EP0727091A1 (de) 1996-08-21
CZ128696A3 (cs) 1998-12-16
NO308818B1 (no) 2000-10-30
ATE157480T1 (de) 1997-09-15
PL314226A1 (en) 1996-09-02
NO961788L (no) 1996-06-24
ATA220193A (de) 1995-07-15
HU9601164D0 (en) 1996-07-29
CZ284812B6 (cs) 1999-03-17
AU677682B2 (en) 1997-05-01
HUT75409A (en) 1997-05-28
HU215889B (hu) 1999-03-29

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