EP3490073A1 - Device for electrical connection to earth - Google Patents

Device for electrical connection to earth Download PDF

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Publication number
EP3490073A1
EP3490073A1 EP17203173.4A EP17203173A EP3490073A1 EP 3490073 A1 EP3490073 A1 EP 3490073A1 EP 17203173 A EP17203173 A EP 17203173A EP 3490073 A1 EP3490073 A1 EP 3490073A1
Authority
EP
European Patent Office
Prior art keywords
ground connection
piece
connection piece
layer
clamp
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
EP17203173.4A
Other languages
German (de)
French (fr)
Other versions
EP3490073B1 (en
Inventor
François Fayard
Philippe Fontaine
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.)
TE Connectivity Services GmbH
Original Assignee
Tyco Electronics Service 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 Tyco Electronics Service GmbH filed Critical Tyco Electronics Service GmbH
Priority to EP17203173.4A priority Critical patent/EP3490073B1/en
Priority to CN201811390088.7A priority patent/CN109980445A/en
Publication of EP3490073A1 publication Critical patent/EP3490073A1/en
Application granted granted Critical
Publication of EP3490073B1 publication Critical patent/EP3490073B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2691—Clip-on terminal blocks for side-by-side rail- or strip-mounting with ground wire connection to the rail
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
    • 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
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/32—Conductive members located in slot or hole in screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
    • H01R4/42—Clamping area to one side of screw only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • the invention therefore aims to provide a simple solution to all or part of these problems.
  • the present invention relates to an electrical connection device to earth for a wire clamp, the device comprising a ground connection piece, and a support piece, the ground connection piece being taken into consideration. clamp between the wire clamp and the support piece and held in contact with the wire clamp, the ground connection piece being made of a non-magnetic material, with a layer of protective material deposited on the surface of the workpiece ground connection.
  • the protective material is tin, or zinc, or silver or gold.
  • first electrical connection device 1 which we will also call wire clamp, and an embodiment of which is shown in FIG. figure 2 .
  • this connecting piece 12 In order to lighten and reduce the cost of this connecting piece 12, and to avoid or limit the formation of eddy currents in the case of high power applications, another non-magnetic material that copper is used to manufacture the connecting piece 12, preferably an aluminum alloy.
  • this ground connection piece 10 is attached to the lower surface of the clamp 12 and held firmly in contact therewith by a screw 9 which passes through the clamp 12 from top to bottom. ; this screw 9 also passes through the earth connection piece 10 before being screwed, by its threaded end, onto a bearing piece 16, provided with a threaded orifice which cooperates with the threaded end of the screw 9, the ground connection piece 10 bearing on the support piece 16; the ground connection piece is thus gripped and held tight between the support piece 16 and the wire clamp 12.

Abstract

Dispositif de raccordement électrique à la terre pour un serre-fil (1), le dispositif comprenant une pièce de raccordement à la terre (10), et une pièce d'appui (16), la pièce de raccordement à la terre (10) étant prise en tenaille entre le serre-fil (1) et la pièce d'appui (16) et maintenue au contact du serre-fil (1), la pièce de raccordement à la terre (10) étant réalisée en un matériau amagnétique, avec une couche d'un matériau protecteur déposée sur la surface de la pièce de raccordement à la terre (10).Electrical connection device to ground for a wire clamp (1), the device comprising a ground connection piece (10), and a support piece (16), the ground connection piece (10) being gripped between the thread clamp (1) and the support piece (16) and kept in contact with the thread clamp (1), the ground connection piece (10) being made of a non-magnetic material, with a layer of protective material deposited on the surface of the ground connection piece (10).

Description

La présente invention se rapporte au domaine des dispositifs de raccordement et/ou de liaison électrique; l'invention concerne plus particulièrement un dispositif de raccordement électrique de type « serre fil » ou de type pied de protection pour le raccordement à la terre.The present invention relates to the field of connection devices and / or electrical connection; the invention relates more particularly to a type of electrical connection device "greenhouse" or type of foot protection for connection to the ground.

Il est connu de raccorder électriquement deux fils conducteurs en fixant chaque fil séparément sur une même pièce de raccordement réalisée dans un matériau conducteur, chaque fil étant serré contre ladite pièce de raccordement par une portion de serre-fil, ou cage de serrage, positionnée à chaque extrémité de la pièce de raccordement. Il est également connu de raccorder un fil conducteur en le fixant par une extrémité sur une première pièce de raccordement, ou serre fil, réalisée dans un matériau conducteur, ce serre fil étant maintenu au contact d'une deuxième pièce de raccordement à la terre, ou pied de protection, également réalisée dans la masse d'un matériau conducteur.It is known to electrically connect two conductor wires by fixing each wire separately on the same connecting piece made of a conductive material, each wire being clamped against said connection piece by a clamp portion, or clamping cage, positioned at each end of the connecting piece. It is also known to connect a conductive wire by fixing it at one end to a first connecting piece, or wire clamp, made of a conductive material, this wire clamp being held in contact with a second ground connection piece, or foot protection, also made in the mass of a conductive material.

La ou les pièces de raccordement conductrices sont habituellement réalisées en cuivre, du fait de l'excellente conductivité de ce matériau. Mais ce matériau est lourd et onéreux.The conductive connection piece or parts are usually made of copper, because of the excellent conductivity of this material. But this material is heavy and expensive.

L'invention a donc pour but de proposer une solution simple à tout ou partie de ces problèmes.The invention therefore aims to provide a simple solution to all or part of these problems.

A cet effet, la présente invention concerne un dispositif de raccordement électrique à la terre pour un serre-fil, le dispositif comprenant une pièce de raccordement à la terre, et une pièce d'appui , la pièce de raccordement à la terre étant prise en tenaille entre le serre-fil et la pièce d'appui et maintenue au contact du serre-fil, la pièce de raccordement à la terre étant réalisée en un matériau amagnétique, avec une couche d'un matériau protecteur déposée sur la surface de la pièce de raccordement à la terre.To this end, the present invention relates to an electrical connection device to earth for a wire clamp, the device comprising a ground connection piece, and a support piece, the ground connection piece being taken into consideration. clamp between the wire clamp and the support piece and held in contact with the wire clamp, the ground connection piece being made of a non-magnetic material, with a layer of protective material deposited on the surface of the workpiece ground connection.

Selon un aspect de l'invention, le matériau amagnétique est un alliage d'aluminium.According to one aspect of the invention, the non-magnetic material is an aluminum alloy.

Selon un aspect de l'invention, le matériau protecteur est de l'étain, ou du zinc, ou de l'argent ou de l'or.According to one aspect of the invention, the protective material is tin, or zinc, or silver or gold.

Selon un aspect de l'invention, une couche d'un matériau de liaison est déposée sur la surface de la pièce de raccordement à la terre, entre le matériau amagnétique et la couche de matériau protecteur.According to one aspect of the invention, a layer of a bonding material is deposited on the surface of the ground connection piece between the non-magnetic material and the layer of protective material.

Selon un aspect de l'invention, le matériau de liaison est du cuivre.According to one aspect of the invention, the bonding material is copper.

Pour sa bonne compréhension, l'invention est décrite en référence aux dessins ci-annexés représentant, à titre d'exemple non limitatif, une forme de réalisation d'un dispositif selon l'invention.

  • Figure 1 est une vue éclatée et en perspective d'un serre fil et de son logement.
  • Figure 2 est une vue en perspective d'un serre fil.
  • Figure 3 est une vue éclatée et en perspective d'un serre fil avec son pied de protection et son logement.
  • Figure 4 est une vue en perspective d'un pied de protection.
  • Figure 5 est une vue en perspective d'un serre-fil avec son pied de protection.
  • Figure 6 est une vue en perspective d'un serre-fil à l'intérieur de son logement avec son pied de protection.
For a good understanding, the invention is described with reference to the accompanying drawings showing, by way of non-limiting example, an embodiment of a device according to the invention.
  • Figure 1 is an exploded and perspective view of a greenhouse and its housing.
  • Figure 2 is a perspective view of a greenhouse.
  • Figure 3 is an exploded perspective view of a greenhouse with its protective foot and housing.
  • Figure 4 is a perspective view of a protective foot.
  • Figure 5 is a perspective view of a wire clamp with its protective foot.
  • Figure 6 is a perspective view of a wire clamp inside its housing with its protective foot.

Nous allons décrire concerne un premier dispositif de raccordement électrique 1, que nous appellerons également serre-fil, et dont un mode de réalisation est représenté en figure 2.We will describe a first electrical connection device 1, which we will also call wire clamp, and an embodiment of which is shown in FIG. figure 2 .

Selon le mode de réalisation décrit ici, le serre-fil comprend une pièce de raccordement 12 en forme de cylindre ou de parallélépipède creux, délimitant une cavité ouverte ou non, et traversante ou non, adaptée à la réception d'extrémités de fils conducteurs de différentes formes et/ou dimensions, en particulier de différents diamètres ou longueurs. Chacune des extrémités de cette pièce est munie d'un moyen de fixation configuré pour fixer l'extrémité d'un fil conducteur au contact de la pièce de raccordement. Selon un mode de réalisation, le moyen de fixation comprend un étrier 2, 3, l'étrier étant rapporté et maintenu contre l'une des extrémités de la pièce de raccordement 12, de sorte que l'extrémité du fil conducteur est prise en tenaille et maintenue serrée entre l'étrier 2, 3 et la surface de la pièce de raccordement 12.According to the embodiment described here, the wire clamp comprises a connecting piece 12 in the form of a cylinder or hollow parallelepiped, defining an open cavity or not, and through or not, adapted to receiving ends of conducting wires of different shapes and / or dimensions, in particular of different diameters or lengths. Each end of this piece is provided with a fixing means configured to fix the end of a conductive wire in contact with the connecting piece. According to one embodiment, the fixing means comprises a stirrup 2, 3, the stirrup being attached and held against one of the ends of the connecting piece 12, so that the end of the conductive wire is gripped. and held tight between the stirrup 2, 3 and the surface of the connecting piece 12.

La pièce de raccordement 12 est réalisée dans un matériau conducteur qui assure ainsi la continuité électrique entre les fils conducteurs dont les extrémités respectives sont fixées à chaque extrémité de la pièce de raccordement 12.The connecting piece 12 is made of a conductive material which thus ensures electrical continuity between the conductive wires whose respective ends are fixed at each end of the connecting piece 12.

Afin d'alléger et de diminuer le coût de cette pièce de raccordement 12, et afin d'éviter ou de limiter la formation de courants de Foucault dans le cas d'applications de fortes puissance, un autre matériau amagnétique que le cuivre est utilisé pour fabriquer la pièce de raccordement 12, de préférence un alliage d'aluminium.In order to lighten and reduce the cost of this connecting piece 12, and to avoid or limit the formation of eddy currents in the case of high power applications, another non-magnetic material that copper is used to manufacture the connecting piece 12, preferably an aluminum alloy.

Afin de protéger le matériau amagnétique contre l'oxydation, notamment due au couple galvanique entre l'aluminium de la pièce de raccordement et le cuivre des fils conducteurs qui seront branchés sur la pièce de raccordement 12, une couche d'un matériau protecteur est déposée sur tout ou partie de la surface de la pièce de raccordement 12. Le matériau protecteur peut être de l'étain, du zinc, de l'argent ou de l'or. De préférence, on utilisera l'étain comme matériau protecteur.In order to protect the non-magnetic material against oxidation, in particular due to the galvanic torque between the aluminum of the connecting piece and the copper of the conductive wires which will be connected to the connecting piece 12, a layer of a protective material is deposited on all or part of the surface of the connecting piece 12. The protective material may be tin, zinc, silver or gold. Preferably, tin will be used as the protective material.

Afin de favoriser la fixation du matériau protecteur sur la surface du matériau amagnétique, une couche de cuivre est déposée sur la surface de la pièce de raccordement 12, entre le matériau amagnétique et la couche du matériau protecteur. L'épaisseur de cette couche de cuivre est comprise entre 1 µm et 6 µm. En l'absence d'oxygène, entre la couche de matériau protecteur et la surface du matériau amagnétique utilisé, notamment s'il s'agit d'un alliage d'aluminium, le couple galvanique naturel entre le cuivre et ce matériau restera sans effet oxydant.In order to promote the attachment of the protective material to the surface of the non-magnetic material, a layer of copper is deposited on the surface of the connecting piece 12, between the non-magnetic material and the layer of the protective material. The thickness of this copper layer is between 1 micron and 6 microns. In the absence of oxygen, between the layer of protective material and the surface of the non-magnetic material used, especially if it is an aluminum alloy, the natural galvanic couple between the copper and this material will have no effect oxidant.

La pièce de raccordement ou serre-fil 12 est logée à l'intérieur d'une enveloppe ou d'un boitier, en deux parties 6,7, comme cela est illustré aux figures 1, 3, et 6, le boitier étant réalisé en matériau isolant, et dans lequel sont ménagées deux ouvertures permettant l'accès respectivement aux deux extrémités du serre-fil 12 pour le passage et la fixation des extrémités des fils conducteurs à raccorder.The connecting piece or clamp 12 is housed inside an envelope or a box, in two parts 6, 7, as illustrated in FIGS. figures 1 , 3 , and 6 , the housing being made of insulating material, and in which are provided two openings for access respectively to both ends of the clamp 12 for the passage and fixing the ends of the conductive son to be connected.

Nous allons maintenant décrire en référence à la figure 4 une deuxième pièce de raccordement électrique 10, destinée à raccorder à la terre les fils conducteurs dont les extrémités ont été raccordées au serre-fil 12 décrit précédemment. Cette pièce de raccordement à la terre 10 est fabriquée en matériau amagnétique, avec une couche d'un matériau protecteur déposée sur la surface de la pièce afin de la protéger contre l'oxydation, et de préférence, avec une couche de cuivre déposée entre le matériau amagnétique et la couche du matériau protecteur afin de favoriser la fixation du matériau protecteur. Le matériau protecteur peut être de l'étain, du zinc, de l'argent ou de l'or. De préférence, on utilisera l'étain comme matériau protecteur.We will now describe with reference to the figure 4 a second electrical connection piece 10, intended to connect to ground the son whose ends have been connected to the wire clamp 12 described above. This ground connection piece 10 is made of non-magnetic material, with a layer of protective material deposited on the surface of the part to protect it against oxidation, and preferably with a layer of copper deposited between the non-magnetic material and the layer of the protective material to promote the attachment of the protective material. The protective material may be tin, zinc, silver or gold. Preferably, tin will be used as the protective material.

La portion supérieure de la surface de cette pièce de raccordement à la terre 10 est rapportée sur la surface inférieure du serre-fil 12 et maintenue fermement au contact de celle-ci par une vis 9 qui traverse de haut en bas le serre-fil 12; cette vis 9 traverse également la pièce de raccordement à la terre 10 avant de se visser, par son extrémité filetée, sur une pièce d'appui 16, munie d'un orifice taraudé qui coopère avec l'extrémité filetée de la vis 9, la pièce de raccordement à la terre 10 étant en appui sur la pièce d'appui 16 ; la pièce de raccordement à la terre se trouve ainsi prise en tenaille et maintenue serrée entre la pièce d'appui 16 et le serre-fil 12.The upper portion of the surface of this ground connection piece 10 is attached to the lower surface of the clamp 12 and held firmly in contact therewith by a screw 9 which passes through the clamp 12 from top to bottom. ; this screw 9 also passes through the earth connection piece 10 before being screwed, by its threaded end, onto a bearing piece 16, provided with a threaded orifice which cooperates with the threaded end of the screw 9, the ground connection piece 10 bearing on the support piece 16; the ground connection piece is thus gripped and held tight between the support piece 16 and the wire clamp 12.

Claims (5)

Dispositif de raccordement électrique à la terre pour un serre-fil (1), le dispositif comprenant une pièce de raccordement à la terre (10), et une pièce d'appui (16), la pièce de raccordement à la terre (10) étant prise en tenaille entre le serre-fil (1) et la pièce d'appui (16) et maintenue au contact du serre-fil (1), la pièce de raccordement à la terre (10) étant réalisée en un matériau amagnétique, avec une couche d'un matériau protecteur déposée sur la surface de la pièce de raccordement à la terre (10).Electrical connection device to ground for a wire clamp (1), the device comprising a ground connection piece (10), and a support piece (16), the ground connection piece (10) being gripped between the thread clamp (1) and the support piece (16) and kept in contact with the thread clamp (1), the ground connection piece (10) being made of a non-magnetic material, with a layer of protective material deposited on the surface of the ground connection piece (10). Dispositif selon la revendication 1, dans lequel le matériau amagnétique est un alliage d'aluminium.The device of claim 1, wherein the non-magnetic material is an aluminum alloy. Dispositif selon l'une des revendications 1 ou 2, dans lequel le matériau protecteur est de l'étain, ou du zinc, ou de l'argent ou de l'or.Device according to one of claims 1 or 2, wherein the protective material is tin, or zinc, or silver or gold. Dispositif selon l'une des revendications précédentes, dans lequel une couche d'un matériau de liaison est déposée sur la surface de la pièce de raccordement à la terre (10), entre le matériau amagnétique et la couche de matériau protecteur.Device according to one of the preceding claims, wherein a layer of bonding material is deposited on the surface of the ground connection piece (10) between the non-magnetic material and the layer of protective material. Dispositif selon la revendication 4, dans lequel le matériau de liaison est du cuivre.The device of claim 4 wherein the bonding material is copper.
EP17203173.4A 2017-11-22 2017-11-22 Device for electrical connection to earth Active EP3490073B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17203173.4A EP3490073B1 (en) 2017-11-22 2017-11-22 Device for electrical connection to earth
CN201811390088.7A CN109980445A (en) 2017-11-22 2018-11-21 It is grounded arrangements of electric connection

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Application Number Priority Date Filing Date Title
EP17203173.4A EP3490073B1 (en) 2017-11-22 2017-11-22 Device for electrical connection to earth

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EP3490073A1 true EP3490073A1 (en) 2019-05-29
EP3490073B1 EP3490073B1 (en) 2020-08-12

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Cited By (3)

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CN113049854A (en) * 2021-03-04 2021-06-29 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Multi-purpose high-voltage test fastener connecting piece
CN114421191A (en) * 2022-01-05 2022-04-29 国网江西省电力有限公司电力科学研究院 Wiring device for ferromagnetic material grounding down lead
CN114421191B (en) * 2022-01-05 2024-05-14 国网江西省电力有限公司电力科学研究院 Wiring device for ferromagnetic material grounding down conductor

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CN113049854A (en) * 2021-03-04 2021-06-29 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 Multi-purpose high-voltage test fastener connecting piece
CN114421191A (en) * 2022-01-05 2022-04-29 国网江西省电力有限公司电力科学研究院 Wiring device for ferromagnetic material grounding down lead
CN114421191B (en) * 2022-01-05 2024-05-14 国网江西省电力有限公司电力科学研究院 Wiring device for ferromagnetic material grounding down conductor

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