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FR2512582A1 - Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay - Google Patents

Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay Download PDF

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Publication number
FR2512582A1
FR2512582A1 FR8117289A FR8117289A FR2512582A1 FR 2512582 A1 FR2512582 A1 FR 2512582A1 FR 8117289 A FR8117289 A FR 8117289A FR 8117289 A FR8117289 A FR 8117289A FR 2512582 A1 FR2512582 A1 FR 2512582A1
Authority
FR
France
Prior art keywords
circuit breaker
differential
block
blocks
cover
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
FR8117289A
Other languages
French (fr)
Other versions
FR2512582B1 (en
Inventor
Jean-Louis Ducroquet
Michel Ricordel
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Priority to FR8117289A priority Critical patent/FR2512582A1/en
Publication of FR2512582A1 publication Critical patent/FR2512582A1/en
Application granted granted Critical
Publication of FR2512582B1 publication Critical patent/FR2512582B1/fr
Granted legal-status Critical Current

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Classifications

    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/0264—Protective covers for terminals
    • 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
    • H01H71/082—Connections between juxtaposed circuit breakers
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1018—Interconnected mechanisms with only external interconnections
    • 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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
    • H02B1/06—Boards, panels, desks; Parts thereof or accessories therefor having associated enclosures, e.g. for preventing access to live parts

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  • Breakers (AREA)

Abstract

The breaker is formed of a differential actuator mechanically coupled to a circuit breaker element, both of which are housed in separate blocks. The device prevents disconnection of the two units. An electrical link joins the differential actuator and the input and output terminals of the circuit breaker block. A connector cover is screwed onto the two blocks so as to prevent any disconnection of the electric and mechanical links between the two blocks. The cover has a hook which fits under a loop fixed to the casing of one of the blocks. The two blocks are fitted to a support rail then fastened together with their operating mechanisms coupled together. It is made impossible to separate the two units without physical destruction, thus preventing incorrect alignment between the actuator and the contacts.

Description

DISPOSITIF D ' IllVIOLABiLITE D'UN DISJONCTEUR DIFFERENTIEL . DEVICE FOR THE IllVIOLABiLITY OF A DIFFERENTIAL CIRCUIT BREAKER.

L'invention est relative à un dispositif d'inviolabilité pour un disjoncteur différentiel constitué par l'associa- tion d'un bloc différentiel de commande de déclenchement et d'un bloc disjoncteur à boîtier moulé, les deux blocs étant accolés et reliés au moins par une liaison mécanique de transmission d'un ordre de déclenchement du bloc diffe- rentiel vers le bloc disjoncteur et par une liaison électrique entre le bloc différentiel et les bornes d'entrée ou de sertie du bloc disjoncteur.The invention relates to a tamper-evident device for a differential circuit breaker constituted by the association of a differential trip control block and a circuit breaker block with molded case, the two blocks being joined and connected at least by a mechanical link for transmitting a trip order from the differential block to the circuit breaker block and by an electrical link between the differential block and the input or crimp terminals of the circuit breaker block.

Le brevet français N 2.437.692 décrit un disjoncteur différentiel du genre mentionné permettant de conférer à un disjoncteur standard à boltier moulé la fonction de protection différentielle par simple accolement d'un bloc déclencheur différentiel. Le besoin s'est fait sentir de rendre inviolable l'association bloc disjoncteur, bloc différentiel, afin d'éviter toute misehorsfonction de la fonction différentielle. L'utilisateur peut être tenté de supprimer la prctection différentielle lorsque l'installation pré- sente un défaut à la terre difficilement détectable ou re médiable, et la présente invention a pour but de permettre la réalisaticn d'un dispositif d'inviolabilité du disjoncteur différentiel.French patent N 2,437,692 describes a differential circuit breaker of the kind mentioned, making it possible to give a standard circuit breaker with molded boltier the differential protection function by simple attachment of a differential trip unit. The need has arisen to make the combination of circuit breaker block and differential block inviolable, in order to avoid any disabling of the differential function. The user may be tempted to suppress differential protection when the installation presents an earth fault which is difficult to detect or repair, and the object of the present invention is to allow the realization of a tamper-proof device for the differential circuit breaker. .

Le dispositif d'inviolabilité selon la présente invention est caractérisé par le fait qu'il comporte un élément cache-bornes susceptible d'être verrouillé sur le disjoncteur différentiel en une position active pour empêcher toute déconnexion desdites liaisons électrique et mécanique entre le bloc différentiel et le bloc disjoncteur.The tamper-evident device according to the present invention is characterized in that it comprises a terminal cover element capable of being locked on the differential circuit breaker in an active position to prevent any disconnection of said electrical and mechanical connections between the differential block and the circuit breaker block.

Le cache-bornes avantageusement plombable évite la déconnexion électrique pure et simple d bloc différentiel, l'utilisateur débranchant les conducteurs de liaison entre le bloc disjoncteur et le bloc différentiel et raccordant directement le circuit d'utilisation au bloc disjoncteur. The advantageously sealable terminal cover avoids outright electrical disconnection of the differential block, the user disconnecting the connecting conductors between the circuit breaker block and the differential block and directly connecting the operating circuit to the circuit breaker block.

Le cache-bornes évite d'autre part toute séparation mécanique entre le bloc disjoncteur et le bloc différentiel susceptible de rompre la liaison mécanique de transmission d'un ordre de déclenchement au bloc disjoncteur. En sépa rant les deux blocs, éventuellement après désserraae des vis de fixation il était possible de déboîter les éléments de liaison mécanique entre les deux blocs et malgré la détection d'un défaut différentiel par le bloc différentiel l'ordre de déclenchement n'était plus transmis au disjoncteur, qui alimentait alors normalement le circuit d'util-1.- sation sans assurer la protection différentielle.The terminal cover on the other hand avoids any mechanical separation between the circuit breaker block and the differential block liable to break the mechanical connection for transmitting a trip order to the circuit breaker block. By separating the two blocks, possibly after loosening the fixing screws, it was possible to disengage the mechanical connection elements between the two blocks and despite the detection of a differential fault by the differential block, the tripping order was no longer transmitted to the circuit breaker, which then normally supplied the operating circuit without 1. providing differential protection.

Le cache-bornes est avantageusement réalisé en forme de capot venant coiffer les conducteurs de liaison électrique entre les deux blocs. Le cache-bornes se raccorde et est solidarisé à une oreille ménagée sur le bottier du bloc différentiel, de façon à recouvrir l'orifice de passage des conducteurs électriques de liaison. La solidarisation entre le cache-bornes et le bloc différentiel peut etre réalisée par un crochet s'encliquetant lors de la mise en place du cache-bornes, ce dernier étant solidarisé au bloc disjoncteur par une vis plombable.Il est évident que la liaison mécanique entre le cache-bornes et le bloc différentiel peut être réalisée par une deuxième vis plombable ou que la solidarisation du cache-bornes avec les deux blocs est réalisable par d'autres moyens inviolables, par exemple par encliquetage dont la séparation implique une destruction des éléments de liaison.The terminal cover is advantageously made in the form of a cover which covers the conductors of the electrical connection between the two blocks. The terminal cover is connected and is secured to an ear provided on the case of the differential unit, so as to cover the orifice for passage of the electrical connecting conductors. The connection between the terminal cover and the differential block can be achieved by a snap-in hook during the installation of the terminal cover, the latter being secured to the circuit breaker block by a sealable screw. It is obvious that the mechanical connection between the terminal cover and the differential block can be achieved by a second sealable screw or that the connection of the terminal cover with the two blocks can be achieved by other tamper-evident means, for example by snap-fastening, the separation of which involves destruction of the elements link.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels la figure 1 est une figure schématique en élévation partiellement arrachée, d'un dispositif d'inviolabilité selon l'invention, le capot cache-bornes étant représenté en position enlevée; la figure 2 est une vue de dessous de la figure 1, le capot cache-bornes étant supposé posé; la figure 3 est une vue partielle de la figure 1, montrant le cache-bornes en position montez; la figure 4 est une vue schématique en perspective du capot cache-bornes et de l'oreille d'encliquetage associée solidaire du bloc différentiel.Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and shown in the appended drawings, in which FIG. 1 is a diagrammatic elevation partially broken away, of a tamper-evident device according to the invention, the terminal cover cover being shown in the removed position; Figure 2 is a bottom view of Figure 1, the terminal cover cover being assumed posed; Figure 3 is a partial view of Figure 1 showing the terminal cover in the mount position; Figure 4 is a schematic perspective view of the terminal cover cover and the associated latching ear secured to the differential unit.

La figure 1 correspond à la figure 1 du brevet français précité N 2.437.692, sur laquelle les numéros de repère ont été conservés et le cache-bornes et le rail de fixation ont été ajoutés. On reconnut le bloc différentiel 10, associé au bloc bipolaire 12, les manettes accouplées 14, le mécanisme 2C du bloc différentiel, la liaison mécanique 24 entre le mécanisme 20 et les manettes 14, la liaison mécanique de déclenchement 22 agissant sur la barre de déclenchement 16 du disjoncteur 12, les conducteurs électriques de liaison 17 entre les blocs 10 et 12, le bouton de test 72 et l'indicateur de déçlenchement 62.On se référera avantageusement au brevet français précité pour de plus amples détails, et il suffit de rappeler que les conducteurs 17 raccordés aux bornes de sortie du disjoncteur 12 connectent en série les blocs disjoncteur 12 et différentiel 10, et qu'un défaut différentiel détecté par ce der nler bloc provoque le déclenchement du disjoncteur 12.Figure 1 corresponds to Figure 1 of the aforementioned French patent N 2,437,692, on which the reference numbers have been kept and the terminal cover and the fixing rail have been added. We recognized the differential block 10, associated with the bipolar block 12, the coupled levers 14, the mechanism 2C of the differential block, the mechanical link 24 between the mechanism 20 and the levers 14, the mechanical trigger link 22 acting on the trigger bar. 16 of the circuit breaker 12, the electrical connecting conductors 17 between the blocks 10 and 12, the test button 72 and the trip indicator 62. We will advantageously refer to the aforementioned French patent for further details, and it suffices to recall that the conductors 17 connected to the output terminals of the circuit breaker 12 connect the circuit breaker 12 and differential 10 blocks in series, and that a differential fault detected by this last block causes tripping of the circuit breaker 12.

Les blocs 10, 12 sont encliquetés sur un rail DIN symétrique 30 et maintenus accolés par tout moyen approprié, par exemple par des vis de liaison (non représentées). Un capot cache-bornes 32 peut être adapté au bloc disjoncteur 12 après association des blocs 10, 12 pour recouvrir les conducteurs 17 et les bornes 34 du bloc disjoncteur 12 recevant les conducteurs 17. Les bornes 34 peuvent être les bornes d'entrée ou de sortie du disjoncteur 12 selon un branchement aval ou amont du bloc différentiel. Le capot cache-bornes 32 s'étend sur toute la largeur du bloc disjoncteur 12 pour se raccorder à une oreille 36 du bloc différentiel 10 venant coiffer les orifices de passage des conducteurs 17.Le capot cache-bornes 32 se prolonge en direction du bloc différentiel 10 par des ergots de cen trag 38 et un crochet de verrouillage 40 venant s'accrocher en position montée du cache-bornes sur un rebord 42 porté par l'oreille 36. a présence du crochet 40 implique un mouvement de pivotement pour la mise en place du capot cache-bornes 32, ce dernier étant par la suite solidarisé au disjoncteur par une vis plombable 44 vissée dans un orifice 46 ménagé dans le bloc disjoncteur 12. La vis 44 peut être une vis auto-taraudeuse et présenter un orifice de passage d'un fil de plombage. En position montée du capot cache-bornes 32 les conducteurs 17 et les bornes 34 sont inaccessibles rendant toute déconnexion électrique des deux blocs 10, 12 impossible.Le verrouillage par cro chet 40, rebord 42 et la fixation par la vis plombable 44 empêchent d'autre part toute séparation par coulissement des blocs 10, 12 sur le rail DIN 30.The blocks 10, 12 are snapped onto a symmetrical DIN rail 30 and kept joined by any suitable means, for example by connecting screws (not shown). A terminal cover 32 can be adapted to the circuit breaker block 12 after association of the blocks 10, 12 to cover the conductors 17 and the terminals 34 of the circuit breaker block 12 receiving the conductors 17. The terminals 34 can be the input or breaker 12 output according to a downstream or upstream connection of the differential unit. The terminal cover 32 extends over the entire width of the circuit breaker unit 12 to connect to an ear 36 of the differential unit 10 covering the orifices for passage of the conductors 17. The terminal cover 32 extends in the direction of the unit differential 10 by lugs of cen trag 38 and a locking hook 40 hooking in the assembled position of the terminal cover on a flange 42 carried by the ear 36. the presence of the hook 40 implies a pivoting movement for setting in place of the terminal cover 32, the latter being subsequently secured to the circuit breaker by a sealable screw 44 screwed into an orifice 46 formed in the circuit breaker block 12. The screw 44 may be a self-tapping screw and have a passage of a sealing wire. In the assembled position of the terminal cover 32 the conductors 17 and the terminals 34 are inaccessible making any electrical disconnection of the two blocks 10, 12 impossible. Locking by hook 40, flange 42 and fixing by the sealable screw 44 prevent on the other hand, any separation by sliding of the blocks 10, 12 on the DIN rail 30.

I1 est clair que la fixation du capot cache-bornes 32 sur les blocs 10, 12 peut être réalisée par d'autres moyens inviolables, par exemple par des encliquetages inviolables, et que l'idée mère de la présente invention est la double fonction du cache-bornes d'inviolabilité de la liaison électrique entre les blocs 10, 12, et de la liaison mécanique de ces blocs. It is clear that the fixing of the terminal cover cover 32 on the blocks 10, 12 can be carried out by other tamper-proof means, for example by tamper-evident snaps, and that the mother idea of the present invention is the dual function of tamper-proof terminal cover of the electrical connection between the blocks 10, 12, and of the mechanical connection of these blocks.

Le fonctionnement découle de l'exposé précédent, et il suffit de remarquer que l'inviolabilité est réalisée par des moyens extrêmement simples, en l'occurrence l'adJonc- tion d'un crochet 40 de verrouillage au cache-bornes 32.The operation follows from the preceding description, and it suffices to note that the inviolability is achieved by extremely simple means, in this case the addition of a hook 40 for locking to the terminal cover 32.

et que l'invention est applicable à tout type de disjnc- teur différentiel réalisé par l'aecolement de deux blocs. and that the invention is applicable to any type of differential circuit breaker produced by the attachment of two blocks.

Claims (7)

RevendicationsClaims 1. Dispositif d'inviolabilité pour un disjoncteur différentiel constitué par l'association d'un bloc différentiel1. Tamper-proof device for a differential circuit breaker constituted by the association of a differential block (10) de commande de déclenchement et d'un bloc disjoncteur (12) à boltier moulé, les deux blocs (10, 12) étant accolés et reliés au moins par une liaison mécanique (22) de transmission d'un ordre de déclenchement du bloc dzfféren- tiel (10) vers le bloc disjoncteur (12) et par une liaison électrique (17) entre le bloc différentiel (10) et les bornes (34) d'entrée ou de sortie du bloc disjoncteur (12) caractérisé en ce qu'il comporte un élément cache-bornes (32) susceptible d'être verrouillé sur le disJoncteur différentiel (10, 12) en une position active pour empocher toute déconnexion desdites liaisons électrique (17) et mécanique (22) entre le bloc différentiel (10) et le bloc disjoncteur (12).  (10) for tripping control and a circuit breaker block (12) with molded bolt, the two blocks (10, 12) being joined and connected at least by a mechanical link (22) for transmitting a tripping order of the differential block (10) to the circuit breaker block (12) and by an electrical connection (17) between the differential block (10) and the input or output terminals (34) of the circuit breaker block (12) characterized in that that it comprises a terminal cover element (32) capable of being locked on the differential circuit breaker (10, 12) in an active position to pocket any disconnection of said electrical (17) and mechanical (22) connections between the differential block ( 10) and the circuit breaker block (12). 2. Dispositif d'inviolabilité selon la revendication 1, caractérisé par un capot cache-bornes (32) venant en posi- tion active coiffer les bornes (34) du bloc disjoncteur (12) recevant ladite liaison électrique (17) et agencé pour verrouiller mécaniquement les deux blocs associés (10, 12).2. Tamper-evident device according to claim 1, characterized by a terminal cover cover (32) coming into active position covering the terminals (34) of the circuit breaker block (12) receiving said electrical connection (17) and arranged to lock mechanically the two associated blocks (10, 12). 3. Dispositif d'inviolabilité selon la revendication 1 ou 2, lesdits blocs (10, 12) étant encliquetés sur un rail de support (30) et associés par accolement de leurs faces latérales, ladite liaison mécanique (22) étant réalisée automatiquement par embotement d'éléments conjugués lors dudit accolement, caractérisé par le fait que ledit cachebornes (32) solidarise en position active 1 bloc disjoncteur (12) et le bloc différentiel (10) et empêche toute séparation dcsdites faces latérales avec désemboltement desdits éléments conjugués.3. Tamper-evident device according to claim 1 or 2, said blocks (10, 12) being snapped onto a support rail (30) and associated by joining their lateral faces, said mechanical connection (22) being produced automatically by embotation of conjugate elements during said joining, characterized in that said cover (32) secures in the active position 1 circuit breaker block (12) and the differential block (10) and prevents any separation of said lateral faces with disembolism of said conjugated elements. 4. Dispositif d'inviolabilité selon la revendication 1, 2 ou 3, caractérisé par le fait que ledit cache-bornes (32) coiffe l'ensemble de ladite liaison électrique (17) ex terne auxdits blocs disjoncteur (12) et différentiel (10).4. Tamper-evident device according to claim 1, 2 or 3, characterized in that said terminal cover (32) covers all of said electrical connection (17) external to said circuit breaker (12) and differential (10) blocks. ). 5. Dispositif d'inviolabilité selon l'une quelconque des revendications précédentes, caractérisé par le fait que le capot cache-bornes (32) est verrouillé en position active sur le bloc différentiel (10) par un crochet (40) de verrouillage qui s'encliquete lors de la mise en place du capot cache-bornes (32).5. Tamper-evident device according to any one of the preceding claims, characterized in that the terminal cover cover (32) is locked in the active position on the differential unit (10) by a locking hook (40) which s 'snapped in when fitting the terminal cover (32). 6. Dispositif d'inviolabilité selon la revendication 5, ledit bloc différentiel (10) présentant une oreille (36) de recouvrement des orifices dc sortie de conducteurs de liaison (17) entre lesdits blocs (10, 12), caractérisé par le fait que le cache-bornes (32) se raccorde à ladite oreille (36) en étant verrouillé à cette dernière en position active.6. Tamper-evident device according to claim 5, said differential block (10) having an ear (36) covering the orifices dc outlet of connecting conductors (17) between said blocks (10, 12), characterized in that the terminal cover (32) is connected to said ear (36) while being locked to the latter in the active position. 7. Dispositif d'inviolabilité selon l'une quelconque des revendications précédentes, caractérisé en ce que le cachebornes (32) est solidarisé au bloc disjoncteur (12) par une vis plombable (44). 7. Tamper-evident device according to any one of the preceding claims, characterized in that the cover (32) is secured to the circuit breaker block (12) by a sealable screw (44).
FR8117289A 1981-09-10 1981-09-10 Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay Granted FR2512582A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8117289A FR2512582A1 (en) 1981-09-10 1981-09-10 Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8117289A FR2512582A1 (en) 1981-09-10 1981-09-10 Tamperproof differential relay - uses screw-in cover to clip together two modules of earth leakage relay

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Publication Number Publication Date
FR2512582A1 true FR2512582A1 (en) 1983-03-11
FR2512582B1 FR2512582B1 (en) 1983-10-28

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FR2640422A1 (en) * 1988-12-14 1990-06-15 Merlin Gerin MODULAR ASSEMBLY OF A MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER
EP0626711A1 (en) * 1993-05-26 1994-11-30 Bticino S.P.A. A safety coupling device between two modular electric apparatus
US6239395B1 (en) * 1999-10-14 2001-05-29 General Electric Company Auxiliary position switch assembly for a circuit breaker
FR2873234A1 (en) * 2004-07-16 2006-01-20 Schneider Electric Ind Sas DEVICE FOR LOCKING A DEVICE FOR FASTENING TWO ELECTRICAL DEVICES AND APPARATUS COMPRISING SUCH A DEVICE
EP2037477A1 (en) 2007-09-11 2009-03-18 Schneider Electric Industries SAS Electric device with differential protection

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FR2640422A1 (en) * 1988-12-14 1990-06-15 Merlin Gerin MODULAR ASSEMBLY OF A MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER
EP0375568A1 (en) * 1988-12-14 1990-06-27 Merlin Gerin Modulator assembly device for a multipole differential circuit breaker
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EP1617448A3 (en) * 2004-07-16 2009-05-27 Schneider Electric Industries SAS Locking mechanism for the mounting of two electrical appliances and an apparatus containing such a mechanism.
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