EP0090774B1 - Dispositif de protection contre les perturbations pour un appareil électrique - Google Patents

Dispositif de protection contre les perturbations pour un appareil électrique Download PDF

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Publication number
EP0090774B1
EP0090774B1 EP19830810119 EP83810119A EP0090774B1 EP 0090774 B1 EP0090774 B1 EP 0090774B1 EP 19830810119 EP19830810119 EP 19830810119 EP 83810119 A EP83810119 A EP 83810119A EP 0090774 B1 EP0090774 B1 EP 0090774B1
Authority
EP
European Patent Office
Prior art keywords
cable
appliance
plug
mains
conductors
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
Application number
EP19830810119
Other languages
German (de)
English (en)
Other versions
EP0090774A2 (fr
EP0090774A3 (en
Inventor
Martin Albert Witzig
Paul Anderegg
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.)
A Steffen AG Elektro-Grosshandel Te Spreitenbach
Original Assignee
Feller 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 Feller AG filed Critical Feller AG
Publication of EP0090774A2 publication Critical patent/EP0090774A2/fr
Publication of EP0090774A3 publication Critical patent/EP0090774A3/de
Application granted granted Critical
Publication of EP0090774B1 publication Critical patent/EP0090774B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters

Definitions

  • the invention relates to an interference protection device according to the preamble of patent claim 1.
  • interference filters are known to be composed of inductors and capacitors in a filter circuit arrangement which is dependent on the frequency range of the high-frequency interference to be suppressed or at least attenuated.
  • the disadvantage here is that the attenuation of the high-frequency interference only takes place in the device itself, which requires a careful construction of the interference protection filter with regard to high-frequency radiation, which also takes up space in the device itself, and that a device that was not originally provided with a built-in interference protection filter when damping is required later High frequency interference supplied via the power supply only with considerable effort or in an impermissible manner, for. B. by attached or otherwise upstream, external and separate interference filters can be protected.
  • the object of the invention is to provide a noise protection device of the type mentioned, with which high-frequency interference can be damped for any electrical device without great effort and without requiring additional space in front of the power terminals of the device.
  • the interference protection device has the features stated in the characterizing part of patent claim 1.
  • the present interference protection device can be easily and above all without great additional costs as well as without taking up additional space, instead of the usual device connecting cable, to keep high-frequency interference away from a device that is not provided with a noise filter or to increase the effect of a noise filter installed in the device.
  • a particularly advantageous embodiment of the interference protection device consists in that the inductors provided for damping a lower frequency range, for example up to 1 MHz, are installed in the mains plug, that the capacitors provided for damping a medium frequency range, for example 1 to 30 MHz, are installed in the mains plug and in the device coupling are installed, and that the capacities provided for damping a high frequency range, for example 30 MHz to 1 GHz, are given by the distributed capacitance formed from the conductors and a shielding of the cable.
  • the inductances and capacitances required to achieve high-frequency interference attenuation over a very wide frequency band are distributed so favorably over the components of the connecting line that the connecting line, including the power plug and device coupling, hardly has larger dimensions than a conventional plug-in power connection line for an electrical device .
  • the device coupling can have contact sockets for plugging onto contact pins of the device.
  • the device coupling can have a housing that can be installed in a wall of the device, for example screwed or snapped, to which the cable is mechanically connected in a tensile manner and which contains at least one interference protection element connected to the conductors of the cable.
  • plug elements can be arranged in this housing of the device coupling, which are firmly connected to the conductors of the cable and onto which a filter block containing at least one interference protection element is attached, which in turn is provided with terminals, for example plug terminals, for connecting conductors of the device .
  • the pluggable connecting line for an electrical device shown schematically in FIG. 1 has a cable 1 with three wires 2, 3 and 4, in particular strands, and an outer metallic shield 5, furthermore at one end of the cable 1 three contact pins 6 for the phase conductor L, the neutral conductor N and the earth conductor E of an AC supply network, and at the other end of the cable 1 three corresponding contact sockets 7 with the same conductor designations for the device to be connected.
  • the contact pin 6 for the earth conductor E is connected via the cable core 4 to the contact socket 7 for the earth conductor E, the shield 5 of the cable 1 being likewise connected to the cable core 4 at both cable ends.
  • a winding 8 or 9 of a total of 10 current-compensated coil is connected to the contact pin 6 for the phase conductor L and to the contact pin 6 for the neutral conductor N .
  • the other ends of the windings 8, 9 are connected to the cable core 2 and 3 and thus to the contact sockets 7 for the phase conductor connection and the neutral conductor connection of the device.
  • the pin-side ends of the windings 8, 9 are also connected to one another via a first capacitor 11, while each cable-side end of the windings 8, 9 is connected to the earth wire 4 of the cable 1 via a second capacitor 12 or a third capacitor 13.
  • the contact sockets 7 for the phase conductor L and the neutral conductor N are each connected via a fourth capacitor 14 and a fifth capacitor 15 to the contact socket 7 for the earth conductor E.
  • the damping of high-frequency interference arriving via the contact pins 6 is essentially caused by the inductances of the windings 8, 9 of the coil 10.
  • High-frequency interference in a medium frequency range for example extending from 1 to 30 MHz, is essentially attenuated by the capacitors 11 to 15, while, in order to attenuate high-frequency interference in a high frequency range, for example 30 MHz to 1 GHz, the distributed capacitance between the wires 2 in particular , 3 and the shield 5 of the cable 1 is effective.
  • the distributed capacitance of the shield lies parallel to the discrete capacitors 12 to 15, it can form part of the capacitances required to achieve the desired attenuation, so that the capacitors 12 to 15 can be dimensioned correspondingly smaller or can even be omitted as discrete capacitors.
  • the aforementioned interference protection elements provided at the end of the cable 1 on the contact pin side are accommodated in a mains plug 16 of the cable and the interference protection elements provided on the end of the cable 1 on the contact socket side are accommodated in a device coupling 17 of the cable.
  • the power plug 16 has the three contact pins 6 in a known manner
  • the device coupling 17 has the three contact sockets 7, the power plug 16 and the device coupling 17 being sprayed onto an insulating protective jacket 18 of the cable 1 or being connected to the cable 1 so as to be disconnectable.
  • the cable 1 contains the insulated wires 2, 3 and 4 emerging from its two ends for the phase conductor, the neutral conductor and the earth conductor.
  • the cores 2, 3, 4 are surrounded by the shield 5, for example a metal braid, which is provided at each end with a stranded wire 19 or 20 and in turn is encased by the protective insulating jacket 18.
  • the earth wire 4 and the connecting strands 19, 12 of the shield 5 of the cable 1 are connected in the mains plug 16 to the middle contact pin 6 intended for the earth wire E and in the device coupling 17 to the corresponding middle contact socket 7.
  • the capacitor 11, the coil 10 and the capacitors 12 and 13 are installed in the mains plug 16, while the capacitors 14 and 15 are installed in the device coupling 17.
  • the coil 10 is shown as a ring coil with a ferrite core and two symmetrical windings 8, 9. The components mentioned are connected to the contact pins 6, the contact sockets 7 and the cable cores 2, 3, 4 according to the diagram of FIG. 1.
  • the above-mentioned components and their connections are overmoulded with a plastic material in the same injection molding process during the assembly of the entire connecting line shown in FIG. 2, so that they are protected against damage and impacts.
  • the power plug 16 and the device coupling 17 can essentially have the external dimensions of conventional power plugs and device couplings in the case of prefabricated cables (so-called cord sets). This also applies to the shielded cable 1, since its shield 5 increases its diameter only slightly.
  • the present interference protection device thus corresponds to a conventional device connecting line both in terms of its external shape and in terms of its use for connecting an electrical device to the power supply network, but causes a substantial attenuation of high-frequency interference on the power supply network.
  • the power plug 16 then only contains the coil 10, the windings 8, 9 of which are connected on the one hand to two contact pins 6 and on the other hand to the cable wires 2 and 3.
  • the device coupling 7 is then of a conventional type.
  • the connecting line can also be designed without a device coupling, i. H. be firmly connected to the device.
  • the interference protection device can also have a device coupling that can be installed in a wall of the device.
  • a corresponding exemplary embodiment is shown in FIG. 3 and is described below.
  • the exemplary embodiment in FIG. 3 has a cable 1 which is composed of three insulated conductor wires, a metallic shield and an insulating protective jacket (not shown).
  • a cable plug 16 with three contact pins 6 (only two visible) is connected to the end of the cable 1.
  • Inductive and capacitive interference protection elements are accommodated in the mains plug 16.
  • the mains plug 16 can be a plastic injection-molded part, in which the contact pins, the end of the cable 1 and the mentioned interference protection elements are integrated.
  • the other end of the cable 1 is provided with a device coupling 21 which can be inserted into an opening in a device wall 22.
  • the device coupling 21 has an outer housing 23 with an outer projection or flange 24, which is intended to bear against the device wall 22.
  • the flange can have bores for screw fastening, or the housing 23 can be provided with holding elements which snap into the opening of the device wall 22 behind the latter when the housing 23 is inserted.
  • the cable 1 guided into the interior of the housing 23 is provided with a flexible kink protection 25 clamped in the housing and with a strain relief clamp 26 also anchored in the housing.
  • the individual conductor wires 27 of the cable 1 and its shielding are guided to a printed circuit board 28 accommodated in the housing 23 and are electrically connected there with electrically separated connection points, e.g. B. soldered.
  • the printed circuit board 28 is also provided with a plurality of plug elements 29, only two of which are visible in FIG. 3 and which are electrically connected to the wires 27 of the cable 1 in a manner not shown via conductor runs of the printed circuit board 28.
  • a filter block 31 is plugged over the plug elements 29 corresponding to the printed circuit board 28 and contains, for example, further interference protection elements (not shown) integrated in the mass of the block, as shown in the device coupling 17 of FIG. 2.
  • the filter block 31 On its rear end face, the filter block 31 is provided with three contact pins or contact tabs 32 in the present exemplary embodiment, which correspond to the contact sockets 7 of the device coupling of FIG. 2.
  • the contact pins or contact tabs 32 are used to attach corresponding contact elements which are attached in a manner known per se to inner connecting wires or strands of the device.
  • the housing 23 can contain further protective or switching elements, namely, for example, a tubular fuse 34 inserted into a holder 33.
  • a tubular fuse 34 inserted into a holder 33.
  • the holder is accommodated in a drawer-like compartment 35, which can be pulled outwards from the outside of the housing 23, that is to say on the outside of the device.
  • the electrical connection of the holder 33 takes place via flexible conductor wires which are connected to corresponding points on the printed circuit board 28.
  • an externally actuated switch (not shown) for switching the device on and off or a voltage selector can also be accommodated in the housing 23.
  • the interference protection device shown in FIG. 3 with the power plug 16, the cable 1 and the device coupling 21 can be produced as a unit, with a prefabricated filter block 31, which meets the requirements for the respective case, being provided to meet specific interference protection requirements Contains interference protection elements, is plugged into the rear of the housing 23.
  • a noise protection device to the device in question, the inner connecting wires of the device are first pulled out through the opening of the device wall 22 and plugged into the contact pins or tabs 32 of the filter block 31. Then the housing 23 of the device coupling 21 is inserted into the aforementioned opening, after which the housing 23 is finally firmly connected to the housing wall 22 in the manner described.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (5)

1. Dispositif antiparasite pour un appareil électrique, pour atténuer les parasites à haute fréquence présents sur un réseau de fourniture de courant ou fournis à ce réseau par l'appareil, une ligne de raccordement embrochable étant prévue pour le raccordement électrique de l'appareil au réseau de fourniture de courant et comportant un câble (1) comprenant plusieurs conducteurs (2, 3, 4), lequel est muni, en sa première extrémité, d'un connecteur de raccordement au réseau (6, 16) et, en son autre extrémité, de moyens (7, 17) de raccordement à l'appareil, des éléments antiparasite (8, 9; 12, 13), inductifs et/ou capacitifs, reliés aux conducteurs (2, 3, 4) du câble (1), étant agencés dans le connecteur de raccordement au réseau (6, 16), caractérisé par le fait que, pour atténuer les parasites à haute fréquence dans une plage de fréquences inférieures s'étendant jusqu'à environ 1 MHz, des inductances (8, 9) sont montées dans le connecteur de raccordement au réseau (6, 16), par le fait que, pour l'atténuation dans une plage de fréquences moyennes s'étendant d'environ 1 MHz jusqu'à environ 30 MHz, des condensateurs (12,13) reliés aux inductances (8, 9) sont agencés dans le connecteur de raccordement au réseau (6, 16), et d'autres condensateurs (14, 15) et/ou inductances sont agencés dans les moyens (7, 17) de raccordement à l'appareil, et par le fait que les conducteurs isolés (2, 3, 4) du câble (1) sont entourés par un blindage métallique (5) qui est en communication avec une borne de terre (E) du connecteur de raccordement au réseau (6, 16) et dont la capacité formée avec les conducteurs (2, 3, 4) du câble (1) est conçue pour réaliser l'atténuation dans une plage de fréquences élevées, s'étendant d'environ 30 MHz jusqu'à environ 1 GHz, et coopérer avec les condensateurs (12, 13; 14, 15) du connecteur de raccordement au réseau (6, 16) et des moyens (7, 17) de raccordement à l'appareil ainsi qu'avec les inductances (8, 9) d'au moins le connecteur de raccordement au réseau (6, 16), pour constituer un circuit filtrant cohérent.
2. Dispositif selon revendication 1, caractérisé par le fait que les moyens (7) de raccordement à l'appareil comportent un organe embrochable (17) de raccordement à l'appareil, agencé sur le câble (1).
3. Dispositif selon revendication 2, dans lequel un câble (1) à trois conducteurs, muni d'un blindage (5), est muni d'un connecteur tripolaire de raccordement au réseau (16) et d'un organe tripolaire (17) de raccordement à l'appareil, pour un conducteur de phase (1), un conducteur de neutre (N) et un conducteur de terre (E) du réseau de fourniture de courant, caractérisé par le fait que, dans le connecteur de raccordement au réseau (16), sont raccordés à une broche de contact du conducteur de phase et à une broche de contact du conducteur de neutre de ce connecteur de raccordement au réseau (16), un premier condensateur (11) ainsi que l'extrémité d'un enroulement respectif (8, 9) d'une bobine (10) compensée en courant, dont les autres extrémités d'enroulement sont reliées respectivement à un conducteur de phase et à un conducteur de neutre (2; 3) du câble (1) et sont reliées chacune par un condensateur respectif, respectivement un deuxième et un troisième condensateur (12; 13), à une broche de contact de conducteur de neutre du connecteur de raccordement au réseau (16), par le fait que le blindage (5) du câble (1) est en outre relié à la broche de contact du conducteur de terre du connecteur de raccordement au réseau (16) et à une douille de contact du conducteur de terre de l'organe (17) de raccordement à l'appareil, et par le fait que, dans l'organe (17) de raccordement à l'appareil, une douille de contact de conducteur de phase et une douille de contact de conducteur de neutre de l'organe (17) de raccordement à l'appareil sont reliées chacune, respectivement par l'intermédiaire d'un quatrième et d'un cinquième condensateur (14; 15), à la douille de contact de conducteur de terre de l'organe (17) de raccordement à l'appareil.
4. Dispositif selon revendication 2 ou 3, caractérisé par le fait que l'organe (21) de raccordement à l'appareil présente un boîtier (23), pouvant par exemple être rapporté par vissage ou par verrouillage par enclenchement, qui peut être monté dans une paroi (22) de l'appareil, le câble (1) étant mécaniquement lié à ce boîtier, de manière à résister à la traction, et ce boîtier contenant au moins un élément antiparasite (31) raccordé aux conducteurs (27) du câble (1).
5. Dispositif selon revendication 4, caractérisé par le fait que des éléments connecteurs à embrochage (29) sont agencés dans le boîtier (23) de l'organe (21) de raccordement à l'appareil, sont inamoviblement connectés électriquement aux conducteurs (27) du câble (1), et un bloc-filtre (31) contenant au moins un élément antiparasite est emboîté sur ces éléments connecteurs à embrochage, ce bloc-filtre étant lui-même muni de bornes (31), par exemple de bornes pour embrochage, pour le raccordement de conducteurs de l'appareil.
EP19830810119 1982-03-26 1983-03-23 Dispositif de protection contre les perturbations pour un appareil électrique Expired EP0090774B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH188782 1982-03-26
CH1887/82 1982-03-26

Publications (3)

Publication Number Publication Date
EP0090774A2 EP0090774A2 (fr) 1983-10-05
EP0090774A3 EP0090774A3 (en) 1986-11-20
EP0090774B1 true EP0090774B1 (fr) 1989-03-01

Family

ID=4220919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830810119 Expired EP0090774B1 (fr) 1982-03-26 1983-03-23 Dispositif de protection contre les perturbations pour un appareil électrique

Country Status (2)

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EP (1) EP0090774B1 (fr)
DE (1) DE3379308D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100203762A1 (en) * 2007-10-24 2010-08-12 Afl Telecommunications Llc Ac mains filter and power supply system
CN111613938A (zh) * 2020-06-09 2020-09-01 深圳市睿臻信息技术服务有限公司 一种降低本底噪音装置及其方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181286A1 (fr) * 1984-10-29 1986-05-14 Ascom Autophon Ag Dispositif blindé de protection contre les perturbations dans les lignes de transmission de données
DE3440573A1 (de) * 1984-11-07 1986-05-07 Vogt electronic AG, 8391 Erlau In einem eurostecker untergebrachte stromkompensierte drossel
DE4114036A1 (de) * 1991-03-07 1992-09-10 Taller Gmbh Halterung fuer eine ringkerndrossel eines elektrischen netzsteckers
BE1005762A3 (nl) * 1992-04-14 1994-01-18 Cable And Wire Assemblies Afge Stekker voor uk landen met een tegen stoorsignalen niet beschermd tweeaderig snoer.
GB2271472B (en) * 1992-05-15 1997-01-22 Kainstar Limited Electrical plug assembly
ES2102940B1 (es) * 1994-04-13 1998-04-01 Cablerias Conductoras Sa Dispositivo de conexionado electrico por enchufe.
US6068513A (en) * 1997-08-19 2000-05-30 Statpower Technologies Partnership DC connection method
IT1293996B1 (it) * 1997-09-01 1999-03-15 Teknoalfa Srl Sistema di connessione multipolare per il collegamento di un apparato elettrico che produce disturbi elettromagnetici
ATE283718T1 (de) * 1998-09-21 2004-12-15 Hess & Volk Gmbh Steckergenerator-vorrichtung
FI108175B (fi) * 2000-06-16 2001-11-30 Valtimo Components Oy Liitin
US6984148B1 (en) 2004-07-16 2006-01-10 Xantrex Technology Inc. Electrical connector apparatus and cover therefor
ITUA20164562A1 (it) * 2016-06-21 2017-12-21 D E M S P A Cavo elettrico con filtro
DE102023102983B3 (de) * 2023-02-07 2024-08-14 Lisa Dräxlmaier GmbH Ladestecker-anschlussvorrichtung

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
GB447033A (en) * 1934-08-08 1935-02-26 Gerard De Monge Improvements in interference eliminators for radio reception
GB714818A (en) * 1952-10-10 1954-09-01 Belling & Lee Ltd Improvements in or relating to electrical multicontact connectors
US3191132A (en) * 1961-12-04 1965-06-22 Mayer Ferdy Electric cable utilizing lossy material to absorb high frequency waves
US3488759A (en) * 1966-05-02 1970-01-06 Winegard Co Coax connector unit
US4317152A (en) * 1980-02-08 1982-02-23 Rca Corporation A.C. Power line assembly
JPS56128002A (en) * 1980-03-13 1981-10-07 Mitsubishi Electric Corp Antenna equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100203762A1 (en) * 2007-10-24 2010-08-12 Afl Telecommunications Llc Ac mains filter and power supply system
US8975790B2 (en) * 2007-10-24 2015-03-10 Afl Telecommunications Llc AC mains filter and power supply system
CN111613938A (zh) * 2020-06-09 2020-09-01 深圳市睿臻信息技术服务有限公司 一种降低本底噪音装置及其方法

Also Published As

Publication number Publication date
DE3379308D1 (en) 1989-04-06
EP0090774A2 (fr) 1983-10-05
EP0090774A3 (en) 1986-11-20

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