EP1480243B1 - Fehlerstromschutzschalter - Google Patents

Fehlerstromschutzschalter Download PDF

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Publication number
EP1480243B1
EP1480243B1 EP04076453A EP04076453A EP1480243B1 EP 1480243 B1 EP1480243 B1 EP 1480243B1 EP 04076453 A EP04076453 A EP 04076453A EP 04076453 A EP04076453 A EP 04076453A EP 1480243 B1 EP1480243 B1 EP 1480243B1
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EP
European Patent Office
Prior art keywords
electrical device
casing
wall
rigid body
relay
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
EP04076453A
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English (en)
French (fr)
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EP1480243A1 (de
Inventor
Gabriele Colombo
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.)
ABB Service SRL
Original Assignee
ABB Service SRL
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Filing date
Publication date
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Publication of EP1480243A1 publication Critical patent/EP1480243A1/de
Application granted granted Critical
Publication of EP1480243B1 publication Critical patent/EP1480243B1/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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts

Definitions

  • the present invention relates to an electrical device for protection against residual currents, in particular for low-voltage applications, i.e., with operating voltages of up to one kilovolt.
  • An electrical device according to the preamble of claim 1 is known from the document WO 0145128 .
  • Such protection systems have the main purpose of guaranteeing persons from direct contacts, i.e., accidental contacts with a normally live phase conductor, and from indirect contacts, i.e., for example, with a metal body that is normally insulated, which, on account of a failure, happens to be in contact with a phase.
  • said systems enable protection of the distribution system from risks of failure or fire due to the deterioration of the distribution system caused by conditions of continuous current-dispersion.
  • the above type of protection from residual currents is normally obtained by using two types of electrical devices, namely, the so-called pure "residual-current circuit breakers" and the “residual-current units". Both of these types of devices are equipped with a sensor part, which enables detection of any possible presence of residual currents and tripping of a purposely designed tripping unit. In turn, the tripping unit actuates an appropriate mechanism, operatively connected to the electrical contacts.
  • said mechanism and the contacts are located inside the same casing hosting the sensor part and the tripping unit, whilst, in the case of a residual-current unit, they form part of a separate interruption unit, typically a magnetothermal circuit breaker, which is coupled to the block itself by the fact that the two components are mounted alongside one another.
  • the part in common to residual-current units and pure residual-current circuit breakers comprises a transformer assembly and a tripping relay, which are assembled and operatively connected to one another by means of an appropriate connection circuit.
  • the transformer assembly consists essentially of a residual-current sensor, which, according to widely used embodiments, is made up of a ferro-magnetic toroidal core with the respective primary and secondary windings.
  • the relay which is generally of the demagnetization-polarized type, comprises a containment box, inside which there is provided the electromagnetic equipment and a tripping pin, which protrudes from said box and, when it is actuated by the electromagnetic equipment, triggers the tripping part.
  • a pair of pins also protrude from the box for electrical connection of the relay to the transformer assembly and, more precisely, for connection to the terminals of the secondary winding of the current sensor.
  • the modalities with which the protection devices are built in particular as regards, in the manufacturing phase, assembly and operative connection of the transformer assembly with the tripping relay, present certain critical aspects that are not altogether satisfactory.
  • the relative positions of the connection elements of the relay and of the outputs of the transformer are undefined and may vary from one device to another. It follows that, in order to make the operative connections between the relay, the transformer assembly, and the circuit means to be set between them, manual intervention by an operator who brings the various parts into the positions suitable for connection is necessary. Alternatively, it is necessary to resort to a manipulating member, which picks up and positions said elements in the right positions.
  • the primary task of the present invention is to provide an electrical device for protection against residual currents which will enable the drawbacks mentioned above to be overcome and, in particular, is suited for being implemented in an optimized way as compared to the devices of the known art, enabling faster assembly operations and minimizing the possibility of errors and imprecisions.
  • an electrical device for protection against residual currents which comprises an insulating casing having a rear wall, a front wall, a bottom wall, a top wall, and two side walls, there being positioned inside said casing: a residual-current sensor, which comprises a toroidal core, a primary winding and a secondary winding; and a tripping relay, having a containment box, from a wall of which there protrude a first pin and a second pin designed to enable operative connection of the relay with the current sensor via circuit-connection means interposed between them, said electrical device being characterized in that said connection means comprise a first substantially rigid body, on which there are defined two distinct electrically conductive cables, the first of said conductive cables having a first end connected to the secondary winding and a second free end designed to be connected operatively to said first pin, and the second of said cables having a third end connected to the secondary winding and a fourth free end designed to be connected to said second pin, said first and second pins and said second and fourth
  • the points of connection between the relay and the part for connection with the current sensor are located in a pre-defined desired spatial position, which thus enables a complete automation of the process of assembly, enabling elimination of any manual intervention and consequent optimization of the operations, with a resulting benefit in terms of overall production costs and times.
  • the protection device designated, as a whole, comprises an insulating casing (of which in Figures 4 to 6 only the base part is illustrated), having a rear wall 1, a bottom wall 2, a top wall 3, two side walls 4, and a front wall; said front wall is normally made up of a cover or lid which closes the device at the front, and which is not illustrated in the figures with the only purpose of enabling a clearer illustration of the internal components.
  • the internal side wall may be defined only partially, or else may coincide with the wall of the interruption unit positioned alongside, according to the desired s.
  • the walls of the casing delimit an internal space, inside which the various components of the device are positioned, said components comprising in particular: a tripping relay 5; a kinematic mechanism 6 for opening the contacts associated thereto, according to known constructional and functional embodiments; a transformer assembly 7 for detection of possible residual currents; and circuit-connection means positioned between and designed to connect operatively the tripping relay 5 and the transformer assembly 7, according to modalities which will be described below more in details.
  • the transformer assembly 7 comprises a residual-current sensor, constituted in its essential parts by a toroidal core generally made of ferro-magnetic material, a primary winding, and a secondary winding.
  • the transformer assembly 7 comprises a containment or protective structure 8, housed within which is the toroidal core, with the terminals 9 of the primary winding as well as the terminals 10 of the secondary winding (partially visible in Figure 3) which come out therefrom; on the outer surface of the container 8 there is preferably defined an assembly seat 11 for the purposes that will emerge in greater detail in what follows.
  • the tripping relay 5 comprises a containment box, inside which there is provided the active equipment of the relay.
  • the relay 5 is of the demagnetization-polarized type, in which the equipment comprises an armature equipped with a mobile anchor, on which a coil is wound. From a wall 12 of the casing there protrude a first pin 13 and a second pin 14, designed to enable, via the circuit-connection means previously mentioned, operative connection of the relay itself with the transformer assembly 7 and, more precisely, electrical connection with the secondary winding of the current sensor.
  • the operative-connection means between the relay and the transformer assembly comprise at least one substantially rigid body, designated as a whole in the figures by the reference number 20, upon which are defined two distinct electrically conductive paths, a first path designated by 30 and a second path designated by 40.
  • the first conductive path 30 has a first end 31 connected to the secondary winding and a second free end 32 designed to be connected operatively to the first pin 13.
  • the second path 40 has a third end 41 connected to the secondary winding of the sensor and a fourth free end 42 designed to be connected to the second pin 14 of the relay.
  • the relay 5 and the body 20 are arranged inside the casing, with the two pins 13 and 14 and the two free ends 32 and 42 which are arranged in a spatial position that is pre-defined with respect to any one of the walls of the casing.
  • the rigid body 20 is made of insulating material
  • the two conductive cables 30 and 40 are made using two corresponding metal inserts having at least the end portions that come out therefrom on opposite sides.
  • the two metal inserts are advantageously formed by two substantially rigid filiform conductive cables, which are arranged parallel to one another and are partially embedded inside the body 20 with at least the ends 31, 32, 41, 42 that exit therefrom.
  • the first cable 30 has the first end 31 that is electrically connected to the first terminal of the secondary winding, preferably by welding, and the second free end 32 that comes out of the body and that, in practice, constitutes a substantially rigid pin, designed to be operatively connected to the first pin 13 of the relay.
  • the second cable 40 has a third end 41 preferably welded to the second terminal of the secondary winding and a fourth free end 42 designed to be connected to the second pin 14, which also comes out of the rigid body and forms a rigid connection pin.
  • the rigid body 20 has an area shaped so as to have surfaces for coupling with a geometrically conjugated assembly seat set inside the casing, preferably the assembly seat 11 defined on the container 8 of the transformer assembly 7, so as to simplify the connections with the terminals of the secondary winding.
  • the body 20 can be set in the casing by being coupled to a seat defined in another position, for example, on the internal surface of one of the walls of the casing, such as a side wall, or else on other components or walls, for example an internal divisory diaphragm.
  • the rigid body 20 comprises a first portion 21 of a substantially parallelepipedal shape, and a second portion 22, on which there is made said shaped coupling area, said portions being made in two pieces spaced apart along the longitudinal development of the conductive cables 30 and 40, with the first end 31 and the third end 41 coming out from the second portion 22 and the second end 32 and the fourth end 42 coming out from the first portion 21.
  • the second portion 22 is shaped in such a way that, viewed laterally (see Figure 2), has a substantially L-shaped cross section, in which a first branch 23 of the L-shaped portion has, in the proximity of the internal corner in common with the second branch 24, a groove 25, positioned substantially perpendicular to the longitudinal development of the two conductive cables.
  • the first branch 23 of the L with the lowered groove 25 enables a simple and precise coupling with the assembly seat, whilst the second branch 24 of the L, thanks to its geometrical configuration prevents the possibility of performing incorrect installation of the body 20 in the seat, for example, the wrong way round.
  • the rigid body 20 further comprises a third portion 26, once again made of the same insulating material, which interconnects the two portions 21 and 22 and has a smaller cross section than these.
  • Said portion 26 is positioned between two conductive cables 30 and 40, the portion of these two conductive cables comprised between the first portion 21 and the second portion 22 being not coated with the insulating material of the rigid body.
  • the part of the body 20 corresponding to the portions of conductive cables 30 and 40 has a smaller structural stiffness than the remaining part, and this fact makes it possible to bend it and thus obtain the configuration illustrated in Figures 2 and 3.
  • This makes it possible to use the rigid body 20 inside the casing with two different configurations, namely, with the second portion 22 inserted in the assembly seat 11 with the free portions that extend aligned with respect to one another ( Figures 4 to 6), or, alternatively, with the second portion 22 again inserted in the assembly seat, with the third portion 26 curved to form an elbow, and the first portion 21 and the second portion 22 set crosswise with respect to one another.
  • the circuit-connection means further comprise a second body 50 of a substantially planar shape made of a substantially flexible material, arranged on which is an electronic circuit which operatively connects the relay 5 to the transformer assembly 7 and, more precisely, the two pins 13 and 14 to the two free ends 32 and 42 of the metal inserts 30 and 40.
  • a second body 50 of a substantially planar shape made of a substantially flexible material, arranged on which is an electronic circuit which operatively connects the relay 5 to the transformer assembly 7 and, more precisely, the two pins 13 and 14 to the two free ends 32 and 42 of the metal inserts 30 and 40.
  • four through seats 51 are preferably defined, in each of which there are inserted and electrically connected to the electronic circuit, for example by welding, the two pins 13 and 14, and the third and fourth free ends 32 and 42, respectively.
  • the transformer assembly 7 is inserted inside the casing of the device, so that it rests on the rear wall 1.
  • the rigid body 20 is then positioned, with the portion 22, which is inserted inside the assembly seat 11, preferably defined on the container 8, with the ends 31 and 41 that are connected to the terminals of the secondary winding.
  • the rigid body 20 is positioned, both in the configuration of Figure 1 and in the configuration of Figure 2, with the second portion 22 connected to the assembly seat 11 and with the first parallelepipedal portion 21 that extends towards the front wall, parallel to one of the side walls of the casing 4, or to the bottom wall 2 or the top wall 3.
  • the relay 5 is then positioned, together (in the case of the circuit breaker illustrated in Figures 4 to 6) with the kinematic tripping mechanism 6.
  • the relay 5 is positioned with a side wall 15 of the box that is set parallel to and alongside the first portion 21 so that the third and fourth free ends 32 and 42 and the two pins 13 and 14 are located in a pre-defined relative position, basically at a desired height with respect to the rear wall of the casing, preferably at one and the same height, i.e., on one and the same imaginary plane.
  • the body 50 is positioned so that it rests on the wall 12 of the box of the relay, inserting the two pins 13 and 14 and the two free ends 32 and 42 each inside a corresponding seat 51 and then welding for making the connections.
  • the flexibility of the body 50 enables the imprecisions due to the inevitable constructional tolerances to be eliminated.
  • the fact that the two pins 13 and 14 and the two ends 32 and 42 are in one and the same plane further facilitates the operations of positioning and connection.
  • the protection device according to the invention fully performs the intended task, thanks to the particular configuration of the connection means described previously, it can be assembled in a completely automatic way with a fast and simple process which enables minimization of the possible errors due to manual intervention.
  • all the innovative functions and inventive aspects of the device may be achieved using elements and materials that are readily available on the market, with extremely contained costs and according to a simple and at the same time effective structure of implementation.
  • the device according to the invention can advantageously be used both as a pure residual-current circuit breaker and as a simple residual-current unit to be connected, then, to an associated tripping unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Processing Of Terminals (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (14)

  1. Elektrische Vorrichtung für einen Schutz gegen Restströme, die ein isolierendes Gehäuse mit einer hinteren Wand (1), einer vorderen Wand, einer unteren Wand (2), einer oberen Wand (3) und zwei Seitenwänden (4) aufweist, wobei innerhalb des Gehäuses ein Reststromsensor, der einen Ringkern, eine Primärwicklung und eine Sekundärwicklung aufweist, und ein Auslöserelais (5) mit einem Behälterkasten positioniert sind, wobei von einer Wand desselben ein erster Stift (13) und ein zweiter Stift (14), die entworfen sind, um eine wirksame Verbindung des Relais (5) mit dem Stromsensor über eine Schaltungsverbindungseinrichtung, die zwischen denselben positioniert ist, zu ermöglichen, vorspringen, wobei die elektrische Vorrichtung dadurch gekennzeichnet ist, dass die Verbindungseinrichtung einen ersten im Wesentlichen starren Körper (20), an dem zwei einzelne elektrisch leitfähige Kabel (30, 40) definiert sind, aufweist, wobei das erste der leitfähigen Kabel ein erstes Ende (31), das mit der Sekundärwicklung verbunden ist, und ein zweites freies Ende (32), das entworfen ist, um mit dem ersten Stift (13) wirksam verbunden zu sein, hat, und wobei das zweite (40) der leitfähigen Kabel ein drittes Ende (41), das mit der Sekundärwicklung verbunden ist, und ein viertes freies Ende (42), das entworfen ist, um mit dem zweiten Stift (14) verbunden zu sein, hat, wobei sich der erste (13) und der zweite (14) Stift und das zweite (32) und vierte (42) freie Ende in einer räumlichen Position, die hinsichtlich einer der Wände (1, 2, 3, 4) des Gehäuses vordefiniert ist, befinden.
  2. Elektrische Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der starre Körper aus einem isolierenden Material hergestellt ist und dass das erste (30) und das zweite (40) leitfähige Kabel unter Verwendung eines ersten Metalleinlegeteils und eines zweiten Metalleinlegeteils mit mindestens dem ersten (31) und dem dritten (41) Ende und dem zweiten (32) und dem vierten (42) Ende, die auf entgegengesetzten Seiten von demselben vorspringen, hergestellt sind.
  3. Elektrische Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das erste und das zweite Metalleinlegeteil durch ein erstes fadenförmiges leitfähiges Kabel und ein zweites fadenförmiges leitfähiges Kabel, die parallel zueinander angeordnet sind und innerhalb des isolierenden Körpers teilweise eingebettet sind, wobei die Enden aus demselben austreten, gebildet sind.
  4. Elektrische Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der starre Körper einen Bereich hat, der geformt ist, um Oberflächen zum Koppeln mit einem geometrisch korrespondierenden Aufbausitzsatz (11) innerhalb des Gehäuses zu haben.
  5. Elektrische Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der starre Körper einen ersten Abschnitt (21) einer im Wesentlichen Parallelepiped-Form und einen zweiten Abschnitt (22), an dem der geformte Bereich hergestellt ist, aufweist, wobei der erste und der zweite Abschnitt aus zwei Stücken, die entlang der Längsentfaltung der leitfähigen Kabel (30, 40) voneinander beabstandet sind, hergestellt sind, wobei das erste Ende (31) und das dritte Ende (41) aus dem zweiten Abschnitt (22) herauskommen und das zweite Ende (32) und das vierte Ende (42) aus dem ersten Abschnitt (21) herauskommen.
  6. Elektrische Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der zweite Abschnitt (22) lateral gesehen einen im Wesentlichen L-förmigen Querschnitt hat, bei dem eine erste Abzweigung (23) des L-förmigen Abschnitts in der Nähe der mit der zweiten Abzweigung (24) gemeinsamen inneren Ecke eine Rille (25) hat, die im Wesentlichen senkrecht zu den zwei leitfähigen Kabeln (30, 40) positioniert ist, wobei die erste Abzweigung (23) entworfen ist, um mit dem Aufbausitz (11) verbunden zu sein.
  7. Elektrische Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der starre Körper (20) einen dritten Abschnitt (26) hat, der den ersten (21) und den zweiten Abschnitt (22) miteinander verbindet und einen kleineren Querschnitt als dieselben hat und zwischen den zwei leitfähigen Kabeln (30, 40) positioniert ist, wobei der Abschnitt dieser zwei leitfähigen Kabel (30, 40), den der erste Abschnitt (21) und der zweite Abschnitt (22) zwischen sich aufweisen, freigelegt ist.
  8. Elektrische Vorrichtung nach einem oder mehreren der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass sich der starre Körper (20) innerhalb des Gehäuses befindet, wobei der zweite Abschnitt (22) in den Aufbausitz (11) eingefügt ist, wobei sich der erste (21) Abschnitt, der zweite (22) Abschnitt und der dritte Abschnitt (26) miteinander ausgerichtet erstrecken.
  9. Elektrische Vorrichtung nach einem oder mehreren der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass sich der starre Körper (20) innerhalb des Gehäuses befindet, wobei der zweite Abschnitt (22) in den Aufbausitz (11) eingefügt ist, der dritte Abschnitt (26) gekrümmt ist, um einen Bogen zu bilden, und wobei der erste (21) und der zweite (22) Abschnitt hinsichtlich einander quer positioniert sind.
  10. Elektrische Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltungsverbindungseinrichtung ferner einen zweiten Körper (50) einer im Wesentlichen planaren Form aufweist, an dem eine elektronische Schaltung, die den ersten (13) und den zweiten (14) Stift mit dem zweiten (32) und dem vierten (42) freien Ende wirksam verbindet, vorgesehen ist.
  11. Elektrische Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass es an dem zweiten Körper (50) einen ersten Durchgangssitz (51) und einen zweiten Durchgangssitz (51), wobei der erste (13) und der zweite (14) Stift in den ersten und den zweiten Durchgangssitz (51) eingefügt sind und mit der elektronischen Schaltung elektrisch verbunden sind, und einen dritten Sitz und einen vierten Sitz (51) gibt, wobei das dritte (32) und das vierte (42) freie Ende in dem dritten und dem vierten Sitz (51) eingefügt sind und mit der elektronischen Schaltung elektrisch verbunden sind.
  12. Elektrische Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der zweite Körper (50), auf dem die elektronische Schaltung positioniert ist, aus einem im Wesentlichen flexiblen Material hergestellt ist und an der Wand des Kastens des Relais (5), von der der erste (13) und der zweite (14) Stift vorstehen, ruht.
  13. Elektrische Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stromsensor in einen Behälter, der an der hinteren Wand (1) des Gehäuses ruht und an dem der Aufbausitz (11) des starren Körpers (20) definiert ist, eingefügt ist, wobei der starre Körper (20) mit dem zweiten Abschnitt (22), der mit dem Aufbausitz (11) verbunden ist, und dem ersten Parallepiped-Abschnitt (21), der sich zu der vorderen Wand des Gehäuses erstreckt, im Wesentlichen parallel zu einer Seitenwand (4) des Gehäuses und einer Seitenwand des Kastens des Relais (5) und zwischen denselben angeordnet positioniert ist, wobei das Relais (5) zwischen dem Stromsensor und der vorderen Wand des Gehäuses auf eine solche Weise positioniert ist, dass sich das dritte (31) und das vierte (41) freie Ende und der erste (13) und der zweite (14) Stift im Wesentlichen auf der gleichen Höhe hinsichtlich der hinteren Wand (1) des Gehäuses befinden.
  14. Elektrische Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dieselbe ein reiner Reststrom-Schaltungsunterbrecher oder eine Reststromeinheit ist.
EP04076453A 2003-05-20 2004-05-18 Fehlerstromschutzschalter Expired - Lifetime EP1480243B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000033A ITBG20030033A1 (it) 2003-05-20 2003-05-20 Dispositivo elettrico di protezione contro correnti differenziali.
ITBG20030033 2003-05-20

Publications (2)

Publication Number Publication Date
EP1480243A1 EP1480243A1 (de) 2004-11-24
EP1480243B1 true EP1480243B1 (de) 2007-09-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04076453A Expired - Lifetime EP1480243B1 (de) 2003-05-20 2004-05-18 Fehlerstromschutzschalter

Country Status (4)

Country Link
EP (1) EP1480243B1 (de)
AT (1) ATE374430T1 (de)
DE (1) DE602004009130T2 (de)
IT (1) ITBG20030033A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU78600A1 (de) * 1977-11-28 1979-06-13 Gath N Fehlerstromschutzschalter
AT393573B (de) * 1989-01-19 1991-11-11 Biegelmeier Gottfried Pruefblock fuer fehlerstromschutzschalter
FR2711449B1 (fr) * 1993-10-18 1995-12-22 Merlin Gerin Bloc de protection différentielle avec passage des câbles.
IT1313953B1 (it) * 1999-12-16 2002-09-26 Abb Ricerca Spa Dispositivo di interruzione e protezione di un circuito dialimentazione di un carico contro i guasti verso terra.
US6319051B1 (en) * 2000-05-23 2001-11-20 Speed Tech Corp. Electric connector with a light penetrable socket shell

Also Published As

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DE602004009130D1 (de) 2007-11-08
ATE374430T1 (de) 2007-10-15
ITBG20030033A1 (it) 2004-11-21
EP1480243A1 (de) 2004-11-24
DE602004009130T2 (de) 2008-07-03

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