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EP1243010B1 - Sicherheitsvorrichtung zur temperaturüberwachung für elektrische anlage mit verbindungen - Google Patents

Sicherheitsvorrichtung zur temperaturüberwachung für elektrische anlage mit verbindungen Download PDF

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Publication number
EP1243010B1
EP1243010B1 EP00992206A EP00992206A EP1243010B1 EP 1243010 B1 EP1243010 B1 EP 1243010B1 EP 00992206 A EP00992206 A EP 00992206A EP 00992206 A EP00992206 A EP 00992206A EP 1243010 B1 EP1243010 B1 EP 1243010B1
Authority
EP
European Patent Office
Prior art keywords
connection
electrical
ground
critical temperature
monitored
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
EP00992206A
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English (en)
French (fr)
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EP1243010A1 (de
Inventor
Cyril Charles
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Individual
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Individual
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Publication date
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Publication of EP1243010A1 publication Critical patent/EP1243010A1/de
Application granted granted Critical
Publication of EP1243010B1 publication Critical patent/EP1243010B1/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
    • 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
    • H01H37/767—Normally open
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/68—Structural association with built-in electrical component with built-in fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter

Definitions

  • the present invention relates to a thermal monitoring device for electrical installation and more particularly a device sensitive to overheating undergone by a connection. See for example US-A-2,056,118.
  • the object of the present invention is to remedy these drawbacks by providing a thermal monitoring device which is sensitive to overheating produced by a faulty connection.
  • the present invention thus relates to a device for thermal monitoring of an electrical installation connection, characterized in that it comprises a first connecting element in thermal and electrical relationship with a connection to be monitored, a second connecting element in electrical connection with the earthing of installation, electrical connection means which combine the two connecting means, which are likely to occupy two states, namely a first state or normal operating state in which they are electrically insulating and a second state, or state of breaking, in which they become electrically conductors when they reach a critical temperature.
  • the electrical connection means are such that when they reach temperature. critical they pass, so irreversible from a non-conducting state to a conducting state.
  • connection means may consist of a conductive piston in electrical relation with the first connection, which is urged by elastic means towards the second link, against fusible retaining means able to melt as soon as the connection to monitor reaches critical temperature.
  • connection means may also be consisting of an insulating element of heat-shrinkable type, including one side. said front, is in contact with the first binding and the second side. said back, is in contact with the second link, this element being such that, when the temperature of the connection to be monitored reaches the critical temperature. he retracts thus exposing a contact surface of the first connection with the second.
  • the thermal monitoring device has an elastic and conductive feeler which is connected electrically to a second connecting element and one of which free end comes into contact with the back of the element heat-shrinkable insulation in the contact surface likely to be exposed.
  • the thermal monitoring device can be arranged in parallel to the terminals of the connection to be monitored but also be fully integrated into it.
  • the first connecting element will consist of a mechanical component of the connection.
  • the thermal monitoring device shown on Figure 1 consists of a housing 1 made in one insulating material such as for example a material plastic, which is drilled at one end of a cylindrical housing 3 which extends towards the other end by a cylindrical housing 5 of the same axis and larger diameter.
  • the second end of case 1 comprises a radial boss 7 pierced with a radial orifice 9.
  • the housing 3 allows to receive an electric wire 11 whose conductor 12 is thermally connected and electrically with a connection to control located at immediate proximity and not shown in the drawing.
  • the sheath 13 of the electric wire 11 is removed on a certain length in order to free the conductor 12, which receives a metal lug 14 which is fixed on it by crimping.
  • This terminal ends with a folded end 15 transversely.
  • the end 15 is pierced with an orifice axial 17 which receives a rod 19 of a piston 21, this piston being provided with a head 23 of larger diameter and a intermediate part 25.
  • Part 25 is surrounded by a compression spring helical 27 which, on the one hand is supported on the part end 15 of terminal 3 and, on the other hand, on head 23 of piston 21, so that it exerts on the head of this piston a force in the direction of arrow F.
  • the end free of the rod 19 of the piston 21 is hollowed out with a groove circular 29 in which a rod of material is deposited fuse 31.
  • This fuse material 31 ensures the maintenance of the piston 21 in position against the force of compression exerted on the head 23 thereof by the spring 27, so that upon removal of the maintenance effort provided by the rod 31 the piston 21 is expelled in the direction arrow F.
  • the fusible material constituting the rod 31 is such that at a given temperature, called temperature critical, the stress exerted by the spring 27 on the piston head 23 is greater than the holding force exerted by the fusible ring 31 so that the piston is released.
  • the second end of the housing 1 receives a part metal 35 of cylindrical shape which includes a housing axial 37 receiving an electrical conductor 39 which is connected to the earthing of the installation.
  • Element 35 is drilled with a threaded hole receiving a clamping screw 36 which takes place in the recess 9 of the boss 7, and which ensures the connection of the part 35 with the conductor 39.
  • Maintaining the position of the part 35 is ensured by part by a recess 41 at its upper part in a corresponding recess provided in the housing 1 and by elastic bosses 43 provided at the end thereof.
  • the present invention thus makes it possible to prevent and notify the user of any temperature rise abnormal in the connections of its installation which are with the following thermal monitoring device the invention.
  • the housing 44 is made of a non-conductive material and comprises an anterior cylindrical part 45 and a rear part forming boss 46.
  • the part 45 comprises an axial cylindrical housing 3 which receives one end of an electric wire 11, the conductor 12 is connected to an electrical connection. no shown in the drawing and located near the device.
  • the end of the electric wire 11 is provided a terminal 47 which is crimped on the end of the conductor 12 of wire 11, terminal 47 has a front end and higher which extends towards the interior of the housing 3 and abuts against an internal protuberance 49 of the housing 44.
  • the terminal 47 is blocked on its rear part by elastic stops 51.
  • the internal face of the terminal 47 is covered with a sheet 48 of heat shrink type. that is to say of a sheet which, when brought to a determined temperature shrinks.
  • the internal part of the boss 46 is hollowed out with a recess 53 which receives a metallic piece 55. of shape complementary, which is hollowed out of a longitudinal housing 57 which receives an electrical conductor 59 which is connected to the Earth.
  • part 55 and conductor 59 are ensured by a clamping screw 61.
  • the front part and lower part 55 is hollowed out of a cavity 63 which receives an elastic metallic element 65 which is curved radially towards the terminal 47, so that its free end comes into contact with the external face of the heat shrinkable sheet 48.
  • the functioning of the present thermal monitoring device is established as well as described below.
  • the connection to be monitored not shown on the drawing, is in good condition, and therefore does not heat up.
  • the heat-shrinkable sheet 48 due to its qualities of insulation, prevents contact of the element 65 with the terminal 47.
  • the connection to monitor occurs, the heat produced is transmitted by the conductor 12 to the terminal 47 and from this to the sheet heat shrinkable 48 which when the temperature temperature reaches critical temperature, shrinks enough for the free end of element 65 comes into contact with the terminal 47.
  • the connection is connected to the ground causing cutting the current upstream by triggering the differential circuit breaker.
  • a device could be made thermal monitoring integrated into the connection itself
  • a device in the figure 80 which has at its base a parallelepiped cavity 81 in which a domino is recessed with elastic support metallic 82 of complementary shape which is pierced with a axial housing 84 intended to receive two elements 11. 11 'conductors to be connected which are kept in good condition contact with the domino 82 using clamping screws 83.
  • the body 80 has an upper cavity in which is housed a cylindrical metal terminal 85 pierced with a axial housing 86 intended to receive a conductor 39 'which is held by a screw 83 ', this conductor being connected to the earthing of the installation.
  • a metal spring leaf 88 which is in contact by its free end with the upper face of the domino 82
  • the upper side of this the latter is covered with a heat shrinkable sheet 90 which in normal operation of the connection ensures a electrical insulation between domino 82 and leaf spring 88.
  • the elastic force of this spring blade can be improved by THE contact of a stop 94 provided in the body 80 which exerts pressure on this spring. In these conditions, as before, when a heating of the domino 82 connections cause overheating, film shrinkable 90 contracts thus leaving a free leaf spring 88 contact with the upper side of the domino 82, thus triggering the device differential as previously described.
  • pins 60 and 62 attached to a card intended to take place in a socket and, in simple hatched lines, a terminal 64 from an outlet that is connected to the Earth.
  • the thermal monitoring device according to the invention can be placed on each of pins 60 and 62, it has only been shown in FIG. 4 than in connection with pin 60.
  • This socket has also elastic metallic elements 66 intended for ensure good electrical contact with pin 60 and these elastic metal elements are generally crimped or riveted on a piece 67 provided with an obviously allowing to receive the conductor 71 and a clamping screw 69 which maintains the connection of the wire 71.
  • the thermal monitoring device is integrated here at the connection when crimping or riveting the elements 66 and 67, and consists of an elastic probe conductor 70 including its shape and the fixing of the elements 66 keep it in contact on the ground terminal 64.
  • an elastic probe conductor 70 including its shape and the fixing of the elements 66 keep it in contact on the ground terminal 64.
  • this probe 70 on the underside and during the assembly, has been arranged a heat shrinkable film 77 or other, so that at normal temperature it insulates electrically the probe 70 and the earth terminal 64. It is therefore understandable that, when the existing connections either between elements 66 and the pin 60, i.e.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fuses (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Combustion (AREA)
  • Control Of Temperature (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Burglar Alarm Systems (AREA)
  • Push-Button Switches (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (13)

  1. Vorrichtung zur thermischen Überwachung eines Anschlusses einer elektrischen Anlage, wobei diese Anlage mit Schutzmitteln oder Mitteln zur Erfassung eines Verlustes zur Erde versehen ist, dadurch gekennzeichnet, daß sie elektrische Anschlussmittel (21, 65, 70) umfasst, die einen zu überwachenden Anschluss mit der Erdverbindung der Anlage verbinden, wobei diese elektrischen Anschlussmittel einen Verlust zur Erde hervorrufen können, wenn der zu überwachende Anschluss eine kritische Temperatur erreicht.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie ein erstes Verbindungselement (14, 47, 67) in thermischer und elektrischer Verbindung mit einem zu überwachenden Anschluss, ein zweites Verbindungselement (35, 55, 64) in elektrischer Verbindung mit der Erdverbindung der Anlage, elektrische Anschlussmittel (21, 65, 70) umfasst, die zwischen sich die Verbindungsmittel vereinen und die zwei Zustände einnehmen können, nämlich einen ersten Zustand oder normalen Betriebszustand, in dem sie elektrisch isolierend sind, und einen zweiten Zustand oder Unterbrechungszustand, in dem sie elektrisch leitend werden und einen Stromverlust durch die Erdverbindung hervorrufen, wenn sie eine kritische Temperatur erreichen.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das erste Verbindungselement von einem mechanischen Bestandteil des Anschlusses gebildet ist.
  4. Vorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die elektrischen Anschlussmittel derart beschaffen sind, daß sie, wenn sie die kritische Temperatur erreichen, auf irreversible Weise von einem nicht leitenden Zustand in einen leitenden Zustand übergehen.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Anschlussmittel von einem leitenden Kolben (21) gebildet sind, der in elektrischer Verbindung mit der ersten Verbindung (14) steht und der durch elastische Mittel (27) zu der zweiten Verbindung (35) gegen schmelzbare Haltemittel (31) hin belastet wird, die schmelzen können, sobald der zu überwachende Anschluss die kritische Temperatur erreicht.
  6. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Anschlussmittel (48) von einem Isolierelement wärmeschrumpfbaren Typs gebildet sind, dessen erste, sogenannte Vorderseite mit der ersten Verbindung (47) in Kontakt steht, und dessen zweite, sogenannte Rückseite mit der zweiten Verbindung (55) in Kontakt steht, wobei dieses Element derart beschaffen ist, daß es, wenn die Temperatur des zu überwachenden Anschlusses die kritische Temperatur erreicht, schrumpft und somit eine Fläche des Kontakts der ersten Verbindung mit der zweiten freilegt.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß sie einen elastischen und den elektrischen Strom leitenden Fühler (65) umfasst, der elektrisch mit der Erdverbindung der Anlage verbunden ist und dessen freies Ende mit der Rückseite des wärmeschrumpfbaren Isolierelements in der Fläche, die freigelegt werden kann, in Kontakt kommt.
  8. Verfahren zur thermischen Überwachung einer elektrischen Anlage, umfassend Mittel zur Erfassung eines Stromverlustes durch die Erdverbindung, dadurch gekennzeichnet, daß es darin besteht, den zu überwachenden Anschluss mit der Erdverbindung der Anlage über elektrische Anschlussmittel (21, 65, 70) zu verbinden, die einen Verlust zur Erde hervorrufen können, wenn der zu überwachende Anschluss eine kritische Temperatur erreicht.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die elektrischen Anschlussmittel (21, 65, 70) zwei Zustände einnehmen können, nämlich einen ersten Zustand oder normalen Betriebszustand, in dem sie elektrisch isolierend sind, und einen zweiten Zustand, oder Unterbrechungszustand, in dem sie elektrisch leitend werden und einen Stromverlust durch die Erdverbindung hervorrufen, wenn sie eine kritische Temperatur erreichen.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die elektrischen Anschlussmittel derart beschaffen sind, daß sie, wenn sie die kritische Temperatur erreichen, auf irreversible Weise von einem nicht leitenden Zustand in einen leitenden Zustand übergehen.
  11. Verfahren nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß die Anschlussmittel von einem leitenden Kolben (21) in elektrischer Verbindung mit der ersten Verbindung (14) gebildet sind, der durch elastische Mittel (27) zu der zweiten Verbindung (35) hin gegen schmelzbare Haltemittel (31) belastet wird, die schmelzen können, sobald der zu überwachende Anschluss die kritische Temperatur erreicht.
  12. Verfahren nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß die Anschlussmittel (48) von einem Isolierelement wärmeschrumpfbaren Typs gebildet sind, dessen erste, sogenannte Vorderseite mit der ersten Verbindung (47) in Kontakt steht, und dessen zweite, sogenannte Rückseite mit der zweiten Verbindung (55) in Kontakt steht, wobei dieses Element derart beschaffen ist, daß es, wenn die Temperatur des zu überwachenden Anschlusses die kritische Temperatur erreicht, schrumpft und somit eine Kontaktfläche der ersten Verbindung mit der zweiten freilegt.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß es einen elastischen und den elektrischen Strom leitenden Fühler (65) umfasst, der elektrisch mit der Erdverbindung der Anlage verbunden ist und dessen freies Ende mit der Rückseite des wärmeschrumpfbaren Isolierelements in der Fläche, die freigelegt werden kann, in Kontakt kommt.
EP00992206A 1999-12-28 2000-12-26 Sicherheitsvorrichtung zur temperaturüberwachung für elektrische anlage mit verbindungen Expired - Lifetime EP1243010B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9916556 1999-12-28
FR9916556A FR2803122B1 (fr) 1999-12-28 1999-12-28 Dispositif de surveillance thermique de securite pour connexions d'installations electriques
PCT/FR2000/003684 WO2001048774A1 (fr) 1999-12-28 2000-12-26 Dispositif de surveillance thermique de securite pour connexions d'installations electriques

Publications (2)

Publication Number Publication Date
EP1243010A1 EP1243010A1 (de) 2002-09-25
EP1243010B1 true EP1243010B1 (de) 2003-10-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00992206A Expired - Lifetime EP1243010B1 (de) 1999-12-28 2000-12-26 Sicherheitsvorrichtung zur temperaturüberwachung für elektrische anlage mit verbindungen

Country Status (11)

Country Link
US (1) US6809917B2 (de)
EP (1) EP1243010B1 (de)
CN (1) CN100349239C (de)
AT (1) ATE251337T1 (de)
AU (1) AU2859201A (de)
CA (1) CA2395930C (de)
DE (1) DE60005713T2 (de)
ES (1) ES2208467T3 (de)
FR (1) FR2803122B1 (de)
PT (1) PT1243010E (de)
WO (1) WO2001048774A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869734B1 (fr) * 2004-04-28 2006-08-18 Peugeot Citroen Automobiles Sa Dispositif de protection contre un echauffement localise d'une liaison electrique d'un circuit electrique d'alimentation d'un appareil de puissance electrique relativement elevee, notamment d'un vehicule automobile
GB2471869B (en) 2009-07-15 2012-04-25 Vishay Resistors Belgium Bvba Thermal switch
CN102593633B (zh) * 2011-01-10 2014-08-20 胜德国际研发股份有限公司 具有替换式保护模块的插座装置
FR2979149B1 (fr) 2011-08-18 2014-05-30 Cyril Charles Dispositif de surveillance thermique des bornes d'un dispositif de connexion electrique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056118A (en) * 1936-02-17 1936-09-29 Basse Charles High tension electric circuit completing device
US3026392A (en) * 1960-02-01 1962-03-20 L & M Space Res And Electronic Shunting device
US3046536A (en) * 1960-05-23 1962-07-24 Alfred F Sciuto Automatic fire alarm energizing means
US3254179A (en) * 1964-01-07 1966-05-31 Northern Electric Co Mounting for communication line protector
US3825866A (en) * 1972-06-29 1974-07-23 N Piccione System and apparatus for underground transformer installation
US4188561A (en) * 1977-01-14 1980-02-12 Joslyn Mfg. And Supply Co. Station protector spark gap applique
US4152576A (en) * 1977-04-25 1979-05-01 Resistance Welder Corporation Low voltage welding circuit with non-conductive ground connector
US4085397A (en) * 1977-05-31 1978-04-18 Emerson Electric Co. Electrical switching device for thermal and overvoltage protection
US4084147A (en) * 1977-05-31 1978-04-11 Emerson Electric Co. Normally open, thermal sensitive electrical switching device
US4380036A (en) * 1979-09-12 1983-04-12 Gerald Coren Clip-on protector
US4314304A (en) * 1980-03-27 1982-02-02 Reliable Electric Company Line protector for a communications circuit
US4733325A (en) * 1986-09-23 1988-03-22 American Telephone And Telegraph Company At&T Technologies, Inc. Electrical protective devices
US5583734A (en) * 1994-11-10 1996-12-10 Raychem Corporation Surge arrester with overvoltage sensitive grounding switch
FR2760564B1 (fr) * 1997-03-06 1999-04-23 Pouyet Sa Module de protection enfichable sur une reglette

Also Published As

Publication number Publication date
CA2395930C (fr) 2009-12-22
DE60005713D1 (de) 2003-11-06
US6809917B2 (en) 2004-10-26
ES2208467T3 (es) 2004-06-16
WO2001048774A1 (fr) 2001-07-05
EP1243010A1 (de) 2002-09-25
PT1243010E (pt) 2004-02-27
CN1433564A (zh) 2003-07-30
FR2803122A1 (fr) 2001-06-29
AU2859201A (en) 2001-07-09
ATE251337T1 (de) 2003-10-15
CN100349239C (zh) 2007-11-14
CA2395930A1 (fr) 2001-07-05
US20030054679A1 (en) 2003-03-20
FR2803122B1 (fr) 2002-06-21
DE60005713T2 (de) 2004-09-30

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