WO2017174848A1 - Base de prise mobile à protection de sécurité et son système d'activation et de désactivation - Google Patents

Base de prise mobile à protection de sécurité et son système d'activation et de désactivation Download PDF

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Publication number
WO2017174848A1
WO2017174848A1 PCT/ES2017/070206 ES2017070206W WO2017174848A1 WO 2017174848 A1 WO2017174848 A1 WO 2017174848A1 ES 2017070206 W ES2017070206 W ES 2017070206W WO 2017174848 A1 WO2017174848 A1 WO 2017174848A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
lever
interlocking bar
plug base
electromagnet
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.)
Ceased
Application number
PCT/ES2017/070206
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English (en)
Spanish (es)
Inventor
Ricardo Oliva Chica
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2017174848A1 publication Critical patent/WO2017174848A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01R13/70—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • 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
    • H01R13/44—Means for preventing access to live contacts
    • 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
    • H01R13/7135—Structural association with built-in electrical component with built-in switch the switch being a safety switch with ground fault protector
    • 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 movable plug base with safety protection and its activation and deactivation system, which, due to its conformation, characteristics and operation, improves the mechanisms and systems existing in the market and everything that is part of the corresponding state of the art.
  • This invention is part of the electricity sector, in the field of manufacturing electrical equipment and in particular plugs and sockets.
  • the object of this patent is a plug base that is characterized by being movable, that is to say movable in any direction, in a rotating, lateral, oblique, ascending or descending movement, such movement being executed by the external part of the plug base , either internally or both, fulfilling a double function to ensure safety both in the state of rest and in the active state, incorporating mechanical locking means that make it an inoperative element when there is no plug plugged in and also incorporating mechanical / electrical means that deactivate the current flow at the moment when, when a plug is plugged in, a current leakage, overload, short circuit or any electrical fault occurs in the device or in the installation (wiring up to the plug).
  • the technical solution applied is to link, by mechanical / electrical means, an interlocking bar with a stopcock integrated both elements in the plug base. State of the art
  • An outlet by definition, is one of the parts that make up the electrical connection elements commonly referred to as plugs, in particular it is the part that acts as a female plug and that consists of a body of insulating material, usually anchored to the wall, at first sight or recessed and it has two holes in which metal parts or bushings are located and in which the metal rods that are part of the plug or plug are inserted male, creating the electrical circuit, the power outlet being related and fixed to the power grid.
  • This outlet is made up of several models or designs, either in individual units or in groups of at least two sockets that allow more than one male plug to be connected simultaneously, called multiple bases, which include several sockets in one same piece, generally located in a linear arrangement (strips) but they also exist in other conformations and special distributions of the power outlets, these multiple bases being equally placed in sight either recessed or also in a mobile format, being in this case equipped of a cable that in turn connects them with a fixed base connected to the mains.
  • the outlet is always a cavity of sufficient depth that acts as a receiver of the plug or plug, which is completely inserted into the outlet.
  • the main problem of the power outlet is that it is usually located at points of easy accessibility, being elements that, due to their nature itself, are continuous steps of electric current with the consequent risk of receiving an electric shock if something is introduced simultaneously in both holes.
  • one of the most affected groups is that of children, whether out of curiosity, accident or simply because they are not aware of the danger.
  • plug protectors for and for child safety. This is the case of tubular plastic parts that are inserted into the holes of the outlet, plugging them, or fixed or rotating covers that fit just above the socket of the outlet, covering it and preventing access to the holes.
  • these are pieces added and / or superimposed on the power outlet that the child can manipulate if he insists on it since, as previously mentioned, the power outlet is usually positioned in areas accessible to the child.
  • the utility model ES1048167 presents a "Protector for electrical outlets” comprising "a separating plate with insulating characteristics that centrally houses a disk with a capacity to turn on itself, integral with the carrier plate by means of elements that act as peripheral springs , which give it a determined position of rest, said disk having holes for the passage of the plug plugs, which, in the rest position, are displaced with respect to the plug holes of the base, making the plug impossible until having overcome the effect of the elements that act as peripheral springs by turning the disc, after having inserted the pins into it ".
  • European patent ES2344630 develops an "Electrical safety plug with logic control circuit", in particular a “female plug connected to an intelligent circuit by transforming the female plug into a logically controlled device, with the intelligent circuit mounted inside or at along an approved or standard type female socket, so that the female socket itself can be installed in the same or similar manner as any female socket installed and comprising at least one sensor to control the proper and complete insertion of the male plug consisting of two sensors, two channels that connect the radiation source to the respective friction contact openings, the two sensors being arranged in the female socket in the vicinity of the respective friction contact openings opposite their channels partners.
  • This invention patent develops a movable plug base with safety protection and its activation and deactivation system, which has a movable character and comprises mechanical / electrical means that allow said base to be in an inactive situation, without current flow, when not a plug is plugged in and simultaneously the same means allow, if the base is activated and in case of alteration of the electric current, a malfunction of the plugged in device or any other circumstance, a stopcock is activated (for example differential switch, circuit breaker or other) that blocks the passage of current and deactivates the base of the plug, all from the same structure of the base of the plug.
  • a stopcock is activated (for example differential switch, circuit breaker or other) that blocks the passage of current and deactivates the base of the plug, all from the same structure of the base of the plug.
  • the socket or female socket maintains the normalized conformation as a body or support of non-conductive / insulating material, preferably plastic or similar and of an individual nature, surface, anchored to the wall with the naked eye, or embedded, or as part with multiple bases or strips, in any case with two centrally arranged external holes where metal parts or bushes are located that will be receivers of the metal rods carried by the plug or plug.
  • this movable plug base has an interlocking and unlocking system with a mechanism comprising at least one mobile central plate, an interlocking bar, a switch / stopcock and a return system.
  • the mobile central plate has the capacity to move in a rotating, lateral, oblique, ascending or descending movement, such movement being executed by the external part of the plug base, by its internal part or by both when inserting the plug of the male plug .
  • the stopcock is of the differential switch type, it comprises a toroidal coil connected by electric wires with an electromagnet that includes a nail or, where appropriate, a locking recess.
  • the stopcock is of the circuit breaker type, it comprises a coil in series with an internal ferric shaft and a thermally deformable bimetallic plate. Other types of stopcocks are equally operative.
  • the interlocking bar is intended to engage with the switch / stopcock and the return system, preferably formed by springs, strapping or the like, allows the moving parts of the plug base to be moved to its original position when the system is activated. of unlocking.
  • the interlocking of the plug base is of a mechanical nature and is activated with the simultaneous performance of different actions. To allow the passage of the current it is necessary to introduce the metal rods of the plug of the male plug into the holes of the central plate of the plug base with a movement that translates it, in a rotation, lateral, etc.
  • This interlocking bar which has at least one deformation specified in a notch or a spike according to the type of switch / stopcock, is the element that will finally allow the plug base to return to its original position in the event of any incident in the passage of current in which the above-mentioned stopcock integrated in the socket base will be activated.
  • said displacement of the central plate of the base of the plug is specified in a rotating movement, comprising a spring and / or electromechanical system that allows the displacement and return of the base and an electromechanical system, for example of levers, which allow the activation and / or deactivation of the passage of electric current.
  • the electrical appliance (dryer, stove, fan, refrigerator, etc.) works.
  • the electric unlocking occurs by magnetism since the toroidal coil (consisting of copper wire wound on a core) is decompensated, creating a magnetic field that affects the electromagnet whose nail acts on the lever (or on the interlocking bar in the absence of a lever) pushing it and forcing it to separate from the barb of the interlocking bar, releasing it, so that said interlocking bar is no longer retained and, by means of the spring system, jumps and rotates together with the movable center plate of the base of the plug, thus leaving this plug disconnected and the device turned off.
  • the electric unlocking occurs by magnetism and / or by heating according to the electrical incidence.
  • the electrical system of the plug base includes a circuit breaker comprising a series winding and a bimetallic plate.
  • the ferric axis of the winding by means of a magnetic field, attracts a metal plate linked to the lever, releasing the interlocking bar and getting that, with the spring system, jump and move the central plate movable from the base of the plug, which is disconnected.
  • the bimetallic plate formed by two metals of different coefficient of dilation
  • Figure 2. Diagram of a plug base activated in standard version (differential type / electromagnet stopcock)
  • Figure 3 Scheme of a deactivated plug base with an external keypad integrated in the same plug and sliding system movement (differential / electromagnet type stopcock)
  • Figure 4. Diagram of an activated socket base with external keypad integrated in the same plug and sliding system movement (differential / electromagnet type stopcock)
  • Figure 6. Diagram of an activated socket base with a separate external keypad and lateral displacement of the system (differential / electromagnet type stopcock)
  • Figure 7. Diagram of a deactivated socket base with a magnetothermal type type of stopcock
  • FIG. 8 Diagram of an activated socket base with a magnetothermic type stopcock Preferred Embodiment of the Invention
  • the object of this invention patent is a movable plug base with safety protection and activation and deactivation system, which comprises mechanical / electrical means for activating and deactivating it safely. when you insert or remove the plug plugs and simultaneously have a safety system against current leakage or any electrical anomaly from the electrical appliance to the plug that automatically deactivates it.
  • Figure 1 shows a schematic view of a deactivated plug base, that is to say, unlocked, in the rest position, without current flow and without any plug connected, while in figure 2 the same activated plug base is shown. , that is to say, interlocked, with current and a plug, in both cases with a differential switch.
  • the plug base formed by a movable central plate (1) with displacement capacity is shown, which has both parallel and external holes (2) in which the metal rods are inserted the plug, these parallel holes (2) being connected with contacts (4a) protruding from the central plate and which are intended to touch other contacts (4b) linked to the electric wires (9). Internally the holes are offset since it will be with the rotation of the central plate (1) when its position is adjusted.
  • This mobile central plate (1) is related to the interlocking system in which other elements integrated in the plug base intervene, in particular an interlocking bar (5) located adjacent to the mobile central plate (1) and connected to the same, a barb (10) protruding from the structure of said interlocking bar (5) and a lever-like part (6) being placed in a nearby area, in this example of a wavy conformation, with at least one tooth (13) .
  • the differential switch Located in its housing is the differential switch, which includes a toroidal coil (8a) related to standardized electrical cables (9) and linked by means of electrical wires (19) with an electromagnet (7) with a sliding nail (1 1) located in an area close to the lever (6) described.
  • a return system in particular a spring system comprising a first spring of return (3) centrally located in the central plate (1) and a second, smaller spring (12) related to the lever (6).
  • the interlocking of the plug base is achieved with several simultaneous actions that begin by inserting the plug into the parallel holes (2) with a movement of movement that in this embodiment is rotatable, which allows the contacts (4a) to be joined (4b), closing the electrical circuit and allowing the passage of electric current.
  • the deactivation system that is, the unlocking
  • the toroidal coil (8a) is decompensated creating a magnetic field that is transmitted through of the electric wires (19) to the electromagnet (7) whose nail (1 1) jumps and protrudes, pushes the lever (6) that, by the action of the smaller spring (12), bounces, releases the pick (10) of the interlocking bar (5) and automatically, the mobile central plate (1), by the action of the return spring (3), rotates and the contacts (4a) and (4b) are separated, interrupting the passage of electric current and returning to the inactive position of figure 1.
  • Figures 3 and 4 show a schematic view of a deactivated and activated plug base, respectively, with an external keypad integrated in the same plug base, with a sliding system movement, both with a differential / electromagnet type stopcock.
  • the activation of the plug base that is, the interlocking system
  • the plug base is started with the introduction of the male plug rods, but is also capable of being activated with an externally integrated push button or button (15) in the socket base housing, in one embodiment in which the displacement of the interlocking and unlocking systems is sliding.
  • the intermediate lever (6) is removed, with the interlocking bar (5) presenting in this case a notch (16) suitably sized to fit with the sliding nail (1 1) of the electromagnet (7) of the differential switch, with the return spring (3) integrated in the button or button (15) that is compressed and decompressed sequentially by pressing or releasing such button or push button (15).
  • the interlocking / unlocking part that moves is the electromagnet (7) integral with the button or button (15).
  • FIG. 5 A schematic view of a deactivated and activated plug base, respectively, with an external keypad separated from the base and with lateral displacement of the system and with a stopcock of the differential / electromagnet type is shown in Figures 5 and 6.
  • the interlocking and unlocking system described above is activated, which is activated, either by inserting the plug or by pressing a separate button or button (15) located near the outlet.
  • This button or button (15) is linked to the interlocking bar (5), which moves laterally to approximate the contacts (4a) and (4b) and crimp its pin (10) with the lever (6).
  • the nail (1 1) protruding from the electromagnet (7) of the differential switch (11) is kept separate from the lever (6).
  • Figures 7 and 8 show a diagram of a plug base incorporating a stopcock of the circuit breaker type, with the plug base being deactivated, that is, unlocked, in the rest position, with no current in the figure. 7 and said plug base being activated, that is, locked, with current passage in Figure 8.
  • the interlocking system is similar to that already described.
  • the displacement of the central plate (1) by inserting the plugs of the male plug into the parallel holes (2) activates the current passage by joining the contacts (4a) and (4b), drag the interlocking bar (5) from which the spike (10) (or notch (16), if applicable) is designed to connect with the tooth (13) of the lever (6), which, in turn, It is arranged in such a way that it contacts the bimetallic plate (14) of the circuit breaker related to the coil (8b) with an inner ferric shaft (18) that is kept in the rest position, hidden.
  • the lever (5) is integral with a metal plate (17).
  • a first safety system allows the movable plug base to be inactive when there is no plug inserted, that is, without an electrical current passage and that, in addition, if a displacement (rotation, etc.) of the central plate is necessary to activate the current is still inactive even when it is introduced simultaneously - at the same time - any metallic or non-metallic element in these holes. In this way, it is impossible for the plug base to have a power outlet when there is no plug inserted or if a child puts his fingers in the holes.
  • a second automatic safety system allows the movable plug base to run out of power when, when activated, that is, with a current passage and an inserted plug, the electrical release is triggered by magnetism and / or by heating according to the key electrical passage and incidence (leakage, overload, short circuit ...) that could damage the electrical installation or the device that is plugged in.
  • This second system involves incorporating into the same socket a differential, magnetothermal or any type of current stopcock that automatically deactivates and blocks the current passage until the problem / fault is resolved. In practice, this means that each outlet has its own and unique stopcock (differential, magnetothermal, etc.) that works independently, without interacting with the rest of the sockets that may exist linked to the general picture.
  • any breakdown is limited to a single outlet, which is deactivated but keeping the rest of the electrical outlets activated and operational, being a fundamental safeguard for the rest of the equipment or devices that are connected to the mains and in operation.
  • this would be deactivated through the plug base and in case of a failure of the installation from the base of the plug to the electrical panel it would be disconnected with the differential switch, thermal magnet etc. of the same electrical panel.
  • the plug base works with a displacement movement capable of being in any direction, for example, ascending / descending, lateral, rotating, etc. achieving the same interlocking / unlocking system result. In case of leakage, the system works automatically.
  • the circuit breaker When the flow of the current is altered and detected by the differential, a magnetic field is created that activates the interlocking system of the interlocking bar related to the electromagnet, which deactivates the plug and in the event of a crossover or malfunction of the connected electrical device, the circuit breaker immediately activates the unlocking system with the heating and deformation of the bimetallic plate or with the intervention of the ferric axis of the series coil that unlocks both the retention mechanism of the mobile plate which, thanks to the spring system, rotates on its own, breaks the junction of the contacts and ceases the current flow.
  • the claimed plug base comprises a means of chronometric selection and / or of optionally adjustable sensitivity and / or different from the general picture which, before any alteration of the current flow, regulates the disconnection of both the differential, of the circuit breaker or of any current stopcock so that it occurs before a possible general control jump, even though all the power outlets are connected in series, which, in a normal situation, would simultaneously jump sympathetically.
  • said selector allows to adjust the reaction time of the unlocking of the new plug base, so that it is as minimal as possible with respect to the general control jump. This implies, of course, a better operation of the electrical system since each plug base is an element disconnected from the rest in case of any alteration in the electrical circuit.
  • each plug base is an element disconnected from the rest in case of any alteration in the electrical circuit.
  • the interlocking bar and the electromagnet of the differential switch are related by means of the picking of the barb or the notch of the bar with the recess or the nail of the electromagnet, being equally functional if the male part and the female part are one piece or the other.
  • the relationship between the interlocking bar and the electromagnet of the differential switch is equally functional if both parts are related by means of the movable lever that intervenes as a link.
  • the incorporation of the claimed plug base means increasing the safety of the electrical installation, increasing the safety of people and protecting the environment in a substantial way, also protecting the plugged electrical devices since only the differential jumps , circuit breaker or any current stopcock from the base of the plug and not the general or circuit breaker general differential.
  • the described plug base is capable of being part of a mobile (portable) structure with different sockets of the multiple base type or strips.

Landscapes

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

Abstract

L'invention concerne une base de prise mobile à protection de sécurité et son système d'activation et de désactivation, laquelle comprend une plaque centrale (1) pouvant être déplacée, qui présente deux orifices parallèles (2) situés de manière centrale et des contacts (4a) et (4b) reliés aux câbles électriques (9), une barre de verrouillage (5) avec au moins une déformation dans sa structure qui se présente concrètement sous forme de dent (10) ou d'encoche et éventuellement associée à un levier (6) avec une dent (13), un interrupteur/robinet d'arrêt, de préférence de type différentiel, avec une bobine toroïdale (8a) et un életroaimant (11) avec une griffe (11), ou magnétothermique, avec une plaque bimétallique et une bobine en série avec un axe en fer intérieur, et un système de retour, avec des ressorts (3) (12) ; le déplacement de la plaque centrale (1) étant effectué par un mouvement rotatif, vertical, latéral ou oblique ; et le verrouillage du système étant mécanique et le déverrouillage électrique par magnétisme et/ou par chauffage selon le robinet d'arrêt et l'incidence électrique.
PCT/ES2017/070206 2016-04-04 2017-04-04 Base de prise mobile à protection de sécurité et son système d'activation et de désactivation Ceased WO2017174848A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP201630402 2016-04-04
ES201630402A ES2589639B1 (es) 2016-04-04 2016-04-04 Base de enchufe movible con protección de seguridad y su sistema de activación y desactivación

Publications (1)

Publication Number Publication Date
WO2017174848A1 true WO2017174848A1 (fr) 2017-10-12

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PCT/ES2017/070206 Ceased WO2017174848A1 (fr) 2016-04-04 2017-04-04 Base de prise mobile à protection de sécurité et son système d'activation et de désactivation

Country Status (2)

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ES (1) ES2589639B1 (fr)
WO (1) WO2017174848A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355089A (zh) * 2020-03-14 2020-06-30 马晓云 一种防水和防触电的插座及插头

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113336A (en) * 1975-08-18 1978-09-12 Luk Hon Man Safety electric receptacle and the plug
EP0263079A2 (fr) * 1986-09-29 1988-04-06 Bticino S.P.A. Combinaison d'une prise et d'un commutateur pour appareils électriques du domaine civil
US5035635A (en) * 1990-09-04 1991-07-30 Tsai Shiang Shiun Revolving safety socket
CN1728470A (zh) * 2005-07-26 2006-02-01 陈景正 多功能断路保护插座
US20130309883A1 (en) * 2012-05-17 2013-11-21 Shawn M. Wolfe Protective Lockable Female Electrical Outlet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113336A (en) * 1975-08-18 1978-09-12 Luk Hon Man Safety electric receptacle and the plug
EP0263079A2 (fr) * 1986-09-29 1988-04-06 Bticino S.P.A. Combinaison d'une prise et d'un commutateur pour appareils électriques du domaine civil
US5035635A (en) * 1990-09-04 1991-07-30 Tsai Shiang Shiun Revolving safety socket
CN1728470A (zh) * 2005-07-26 2006-02-01 陈景正 多功能断路保护插座
US20130309883A1 (en) * 2012-05-17 2013-11-21 Shawn M. Wolfe Protective Lockable Female Electrical Outlet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "TT system - Coordination of residual current protective devices From Electrical Installation Guide", WIKI, 18 March 2012 (2012-03-18), pages 1 - 4, XP055428406, Retrieved from the Internet <URL:https://web.archive.org/web/20120318092438/http://www.electrical-installation.org/enwiki/TT_system_-_Coordination_of_residual_current_protective_devices> [retrieved on 20170627] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111355089A (zh) * 2020-03-14 2020-06-30 马晓云 一种防水和防触电的插座及插头

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ES2589639B1 (es) 2017-04-28
ES2589639A1 (es) 2016-11-15

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