EP0737991A1 - Electric apparatus, especially circuit breaker provided with a security device - Google Patents
Electric apparatus, especially circuit breaker provided with a security device Download PDFInfo
- Publication number
- EP0737991A1 EP0737991A1 EP96410025A EP96410025A EP0737991A1 EP 0737991 A1 EP0737991 A1 EP 0737991A1 EP 96410025 A EP96410025 A EP 96410025A EP 96410025 A EP96410025 A EP 96410025A EP 0737991 A1 EP0737991 A1 EP 0737991A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- stop
- opening
- lever
- position corresponding
- 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
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Classifications
-
- 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
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
-
- 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
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H2009/288—Provisions relating to welded contacts
-
- 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
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
Definitions
- the present invention relates to an electrical device, and in particular a circuit breaker equipped with a safety device, this device being arranged to prevent padlocking in the event of welding of a movable contact on a fixed contact following a short circuit, this device being equipped with a manual control lever arranged to be brought by rotation about an axis, either in a normal open position corresponding to the opening of said contacts, or in a normal closed position corresponding to the closing of said contacts , and a control mechanism which transmits control of said lever to a pivoting arm carrying said movable contact.
- the present invention aims to eliminate this danger by equipping the electrical appliance concerned with an adequate safety device.
- the electrical device according to the invention characterized in that the safety device comprises a stop serving as a stop for said control lever, this stop being offset angularly, relative to a position corresponding to the position. normal opening, of an angle sufficient for the force applied to this lever to bring it to bear against this stop is greater than or equal to a predetermined threshold when said contacts are welded.
- said predetermined threshold corresponds to a breaking force of essential components of the apparatus, and said breaking force is defined by a standard.
- the drum carrying the control handle has a recess which is arranged to coincide with an opening formed in the side walls of a housing of the device, to allow said padlocking, said opening is angularly offset with respect to the position occupied by said recess when the lever is in the position corresponding to the application of a force whose value is equivalent to said predetermined threshold when said contacts are welded.
- the partially shown device in this case a circuit breaker 10, comprises a pair of contacts, one of which 11 is fixed and mounted on a support 12 which is connected, in a non- shown, at one of the terminals of the circuit breaker and the other of which 13 is movable.
- This movable contact is arranged at one end of an arm 14 pivoting about an axis 15, called a movable contact arm.
- the axis 15 is mounted on a plate 16 which also carries a hooking hook 17 articulated on an axis 18 integral with the plate 16.
- the hooking hook is linked to one end of a link 19, this end being articulated at a point 20 on said hook, the other end of the link 19 being articulated at a point 21 on a drum 22 rotating around an axis 23 which carries a lever 24 for manual control.
- the drum 22 is housed in an appropriate cavity of the circuit breaker housing and has a recess 25 which, when the contacts are open and the lever is brought into abutment against a stop integral with said housing, coincides with an opening 27 formed through the side walls of this housing to allow the passage of a sealing wire 28, the handle of a padlock or other locking device.
- the configuration of the components as shown in FIG. 1 corresponds to a normal situation, the contacts being free, not welded, and the lever with manual control acting through the control mechanism, correctly on the movable contact.
- FIG. 2 shows this same device 10 when the contacts 11 and 13 are soldered following a short circuit. It can be seen that, although the contacts are closed, the handle 24 for manual control has been able to be brought to bear against the stop 26 and that the recess 25 has been brought opposite the opening 27 made in the side walls of the housing so that the lockout operation was made possible. To reach this state, the operator had to force the lever, which has the effect of deforming the link 19.
- the applied force is less than a limit value, or threshold defined by a standard. Beyond this threshold, the applied force causes a complete rupture of the mechanism but, below this threshold, the applied force causes only a deformation of the link which does not allow the operator to realize danger due to the non-de-energization of the circuit.
- the device 30 shown in this case a circuit breaker, comprises as before a fixed contact 31 mounted on a support 32, a movable contact 33 disposed at one end of an arm 34 pivoting around an axis 35.
- This axis is carried by a plate 36 which also carries a hook 37 articulated on an axis 38 integral with this plate.
- a link 39 is linked at a point 40 to said hook 37 and at a point 41 to a drum 42, rotatable about an axis 43, which carries a lever 44 for manual control.
- the drum 42 is provided with a recess 45 which, when the contacts 31 and 33 are open and the lever is brought into abutment against a stop 46 secured to the housing (not shown) of the device, coincides with an opening 47 formed through the side walls of this box to allow the passage of a sealing wire 48 or the handle of a padlock.
- the configuration of the components as shown in FIG. 3 corresponds to a normal situation, the contacts 31 and 33 being free, not welded, and the manual control lever 44 acting correctly on the movable contact, through the control mechanism.
- FIG. 4 shows the device 30 in a configuration where the contacts 31 and 33 are soldered following a short circuit.
- the handle 44 is in an intermediate position without deformation of the link 39.
- the recess 45 does not coincide with the opening 47, so that a padlocking of the device is not possible.
- the device When the operator exerts a force on the lever 44 in the opening direction, the device can be brought into a position which corresponds to that of FIG. 5.
- the configuration shown corresponds to a limit force, or threshold normalized in below which the mechanism is not completely destroyed, and beyond which the essential components of the mechanism are damaged. It is noted that, in this case, the manual control lever 44 is not in abutment against the stop 46 and that the recess 45 does not coincide with the opening 47 so that padlocking of the device does not is not possible. If the operator pushes the joystick by applying a force which is greater than said threshold, deterioration of essential components of the apparatus is inevitable.
- Figure 6 shows the device in the unlocked open position, following normal triggering. Note that the recess does not coincide with the opening 47, preventing padlocking. The latter is only possible if the lever 44 is pressed against the stop 46.
- FIG. 6 it is possible to provide a compression spring 50 which is mounted in such a way that it tends to oppose the movement of the lever 44 in its final phase, that is to say towards the support against the stop 46, when the contacts 31 and 33 are free.
- the spring 50 opposes a determined resistance on the lever in the displacement phase in which the contacts are already open, but where the lockout position is not yet reached. This resistance makes it possible to make the user attentive to his approach by forcing him to press his effort on the joystick.
- the spring could be replaced by a friction, or any other member having the same functions, making it possible to attract the attention of the user.
Landscapes
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Braking Systems And Boosters (AREA)
- Braking Arrangements (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
La présente invention concerne un appareil électrique, et notamment un disjoncteur équipé d'un dispositif de sécurité, ce dispositif étant agencé pour empêcher un cadenassage en cas de soudure d'un contact mobile sur un contact fixe suite à un court-circuit, cet appareil étant équipé d'une manette de commande manuelle agencée pour être amenée par rotation autour d'un axe, soit dans une position normale d'ouverture correspondant à l'ouverture desdits contacts, soit dans une position normale de fermeture correspondant à la fermeture desdits contacts, et d'un mécanisme de commande qui transmet la commande de ladite manette à un bras pivotant portant ledit contact mobile.The present invention relates to an electrical device, and in particular a circuit breaker equipped with a safety device, this device being arranged to prevent padlocking in the event of welding of a movable contact on a fixed contact following a short circuit, this device being equipped with a manual control lever arranged to be brought by rotation about an axis, either in a normal open position corresponding to the opening of said contacts, or in a normal closed position corresponding to the closing of said contacts , and a control mechanism which transmits control of said lever to a pivoting arm carrying said movable contact.
Suite à un court-circuit, il peut arriver que les contacts électriques d'un disjoncteur soient soudés. Or, on a constaté qu'un opérateur peut arriver à ouvrir la manette de commande manuelle et l'amener dans une position de verrouillage couramment appelée position de cadenassage, bien que les contacts soudés restent fermés. Ceci implique bien entendu une déformation du mécanisme de commande de l'ouverture des contacts. Néanmoins, la force requise pour générer cette déformation est raisonnable et ne dépasse pas un certain seuil de rupture des composants du mécanisme, et notamment un vrillage de la barre de couplage de plusieurs manettes lorsque plusieurs disjoncteurs sont couplés en série. De ce fait, l'opérateur court un danger puisqu'il a déplacé la manette en position d'ouverture des contacts, en croyant de ce fait qu'il a interrompu le circuit de puissance, alors que ces contacts soudés restent fermés, ce qui maintient le circuit sous tension.Following a short circuit, it may happen that the electrical contacts of a circuit breaker are soldered. However, it has been found that an operator can manage to open the manual control lever and bring it into a locking position commonly called padlocking position, although the welded contacts remain closed. This of course implies a deformation of the mechanism for controlling the opening of the contacts. However, the force required to generate this deformation is reasonable and does not exceed a certain rupture threshold of the components of the mechanism, and in particular a twist of the coupling bar of several levers when several circuit breakers are coupled in series. As a result, the operator is in danger since he has moved the lever to the open position of the contacts, thereby believing that he has interrupted the power circuit, while these welded contacts remain closed, which keeps the circuit energized.
La présente invention a pour objectif d'éliminer ce danger en équipant l'appareil électrique concerné d'un dispositif de sécurité adéquat. Ce but est atteint par l'appareil électrique selon l'invention, caractérisé en ce que le dispositif de sécurité comporte une butée servant d'arrêt à ladite manette de commande, cette butée étant décalée angulairement, par rapport à une position correspondant à la position normale d'ouverture, d'un angle suffisant pour que la force appliquée sur cette manette pour l'amener en appui contre cette butée soit supérieure ou égale à un seuil prédéterminé lorsque lesdits contacts sont soudés.The present invention aims to eliminate this danger by equipping the electrical appliance concerned with an adequate safety device. This object is achieved by the electrical device according to the invention, characterized in that the safety device comprises a stop serving as a stop for said control lever, this stop being offset angularly, relative to a position corresponding to the position. normal opening, of an angle sufficient for the force applied to this lever to bring it to bear against this stop is greater than or equal to a predetermined threshold when said contacts are welded.
De préférence, ledit seuil prédéterminé correspond à une force de rupture de composants essentiels de l'appareil, et ladite force de rupture est définie par une norme.Preferably, said predetermined threshold corresponds to a breaking force of essential components of the apparatus, and said breaking force is defined by a standard.
Dans un mode de réalisation préféré de l'appareil où le tambour portant la manette de commande comporte un évidement qui est agencé pour coïncider avec une ouverture ménagée dans des parois latérales d'un boîtier de l'appareil, pour permettre ledit cadenassage, ladite ouverture est angulairement décalée par rapport à la position qu'occupe ledit évidement lorsque la manette est dans la position correspondant à l'application d'une force dont la valeur équivaut audit seuil prédéterminé lorsque lesdits contacts sont soudés.In a preferred embodiment of the apparatus where the drum carrying the control handle has a recess which is arranged to coincide with an opening formed in the side walls of a housing of the device, to allow said padlocking, said opening is angularly offset with respect to the position occupied by said recess when the lever is in the position corresponding to the application of a force whose value is equivalent to said predetermined threshold when said contacts are welded.
La présente invention sera mieux comprise en référence à la description d'exemples de réalisation donnés à titre d'exemples non limitatifs et aux dessins annexés dans lesquels :
- la figure 1 représente une vue partielle d'un appareil électrique de l'art antérieur, dans laquelle les contacts sont ouverts et la manette est en position d'ouverture et de cadenassage,
- la figure 2 représente une vue similaire à celle de la figure 1, mais dans laquelle les contacts sont soudés,
- la figure 3 représente une vue partielle d'un appareil électrique selon l'invention, dans laquelle les contacts sont ouverts et la manette est en position d'ouverture et de cadenassage,
- la figure 4 représente une vue similaire à celle de la figure 3, mais dans laquelle les contacts sont soudés et où la manette est amenée sans effet dans une première position intermédiaire,
- la figure 5 représente une vue similaire à celle de la figure 4, mais dans laquelle la manette est amenée avec un effort limité dans une deuxième position intermédiaire, et
- la figure 6 est une vue similaire à celle de la figure 3, dans la position ouvert non cadenassé.
- FIG. 1 represents a partial view of an electrical device of the prior art, in which the contacts are open and the lever is in the open and padlocked position,
- FIG. 2 represents a view similar to that of FIG. 1, but in which the contacts are welded,
- FIG. 3 represents a partial view of an electrical device according to the invention, in which the contacts are open and the lever is in the open and padlocked position,
- FIG. 4 represents a view similar to that of FIG. 3, but in which the contacts are welded and in which the lever is brought without effect into a first intermediate position,
- FIG. 5 represents a view similar to that of FIG. 4, but in which the lever is brought with a limited force into a second intermediate position, and
- Figure 6 is a view similar to that of Figure 3, in the open position not padlocked.
En référence aux figures 1 et 2, l'appareil partiellement représenté, en l'occurrence un disjoncteur 10, comporte une paire de contacts, dont l'un 11 est fixe et monté sur un support 12 qui est raccordé, d'une manière non représentée, à l'une des bornes du disjoncteur et dont l'autre 13 est mobile. Ce contact mobile est disposé à une extrémité d'un bras 14 pivotant autour d'un axe 15, appelé bras de contact mobile. L'axe 15 est monté sur une platine 16 qui porte également un crochet d'accrochage 17 articulé sur un axe 18 solidaire de la platine 16. Le crochet d'accrochage est lié à une extrémité d'une biellette 19, cette extrémité étant articulée en un point 20 sur ledit crochet d'accrochage, l'autre extrémité de la biellette 19 étant articulée en un point 21 sur un tambour 22 rotatif autour d'un axe 23 qui porte une manette 24 de commande manuelle. Le tambour 22 est logé dans une cavité appropriée du boîtier du disjoncteur et comporte un évidement 25 qui, lorsque les contacts sont ouverts et que la manette est amenée en appui contre une butée solidaire dudit boîtier, coïncide avec une ouverture 27 ménagée à travers les parois latérales de ce boîtier pour permettre le passage d'un fil de plombage 28, de l'anse d'un cadenas ou de tout autre dispositif de verrouillage. La configuration des composants telle que représentée par la figure 1, correspond à une situation normale, les contacts étant libres, non soudés, et la manette à commande manuelle agissant au travers du mécanisme de commande, correctement sur le contact mobile.Referring to Figures 1 and 2, the partially shown device, in this case a
La figure 2 représente ce même appareil 10 lorsque les contacts 11 et 13 sont soudés suite à un court-circuit. On constate que, bien que les contacts soient fermés, la manette 24 de commande manuelle a pu être amenée en appui contre la butée 26 et que l'évidement 25 a été amené en regard de l'ouverture 27 ménagée dans les parois latérales du boîtier de sorte que l'opération de cadenassage a été rendue possible. Pour arriver dans cet état, l'opérateur a dû forcer la manette, ce qui a pour effet une déformation de la biellette 19. La force appliquée est inférieure à une valeur limite, ou seuil défini par une norme. Au-delà de ce seuil, la force appliquée entraîne une rupture complète du mécanisme mais, en-deçà de ce seuil, la force appliquée n'engendre qu'une déformation de la biellette qui ne permet pas à l'opérateur de se rendre compte du danger dû à la non-mise hors tension du circuit.FIG. 2 shows this
En référence à la figure 3, l'appareil 30 représenté, en l'occurrence un disjoncteur, comporte comme précédemment un contact fixe 31 monté sur un support 32, un contact mobile 33 disposé à une extrémité d'un bras 34 pivotant autour d'un axe 35. Cet axe est porté par une platine 36 qui porte également un crochet d'accrochage 37 articulé sur un axe 38 solidaire de cette platine. Une biellette 39 est liée en un point 40 audit crochet d'accrochage 37 et en un point 41 à un tambour 42, rotatif autour d'un axe 43, qui porte une manette 44 de commande manuelle. Le tambour 42 est pourvu d'un évidement 45 qui, lorsque les contacts 31 et 33 sont ouverts et que la manette est amenée en appui contre une butée 46 solidaire du boîtier (non représenté) de l'appareil, coïncide avec une ouverture 47 ménagée à travers les parois latérales de ce boîtier pour permettre le passage d'un fil de plombage 48 ou de l'anse d'un cadenas.With reference to FIG. 3, the
Par rapport à l'appareil représenté par la figure 1, l'appareil de la figure 3 présente les modifications suivantes :
- la butée 46 a été déplacée angulairement d'un angle α par rapport à la position occupée par la butée 26 (représentée schématiquement en traits interrompus sur la figure 3);
- l'ouverture 47 ménagée à travers les parois latérales du boîtier a été déplacée angulairement d'un angle α par rapport à la position occupée par la butée 27 (représentée schématiquement en traits interrompus sur la figure 3).
- the
stop 46 has been angularly displaced by an angle α relative to the position occupied by the stop 26 (shown diagrammatically in broken lines in FIG. 3); - the
opening 47 formed through the side walls of the housing has been angularly displaced by an angle α with respect to the position occupied by the stop 27 (shown diagrammatically in broken lines in FIG. 3).
La configuration des composants telle que représentée par la figure 3, correspond à une situation normale, les contacts 31 et 33 étant libres, non soudés, et la manette 44 de commande manuelle agissant correctement sur le contact mobile, au travers du mécanisme de commande.The configuration of the components as shown in FIG. 3 corresponds to a normal situation, the
La figure 4 représente l'appareil 30 dans une configuration où les contacts 31 et 33 sont soudés suite à un court-circuit.. La manette 44 se trouve dans une position intermédiaire sans déformation de la biellette 39. L'évidement 45 ne coïncide pas avec l'ouverture 47, de sorte qu'un cadenassage de l'appareil n'est pas possible.FIG. 4 shows the
Lorsque l'opérateur exerce un effort sur la manette 44 dans le sens de l'ouverture, l'appareil peut être amené dans une position qui correspond à celle de la figure 5. La configuration représentée correspond à une force limite, ou seuil normalisé en-deçà duquel le mécanisme n'est pas complètement détruit, et au-delà duquel les composants essentiels du mécanisme sont détériorés. On constate que, dans ce cas, la manette 44 de commande manuelle n'est pas en appui contre la butée 46 et que l'évidement 45 ne coïncide pas avec l'ouverture 47 de sorte qu'un cadenassage de l'appareil n'est pas possible. Si l'opérateur pousse la manette en appliquant une force qui est supérieure audit seuil, la détérioration de composants essentiels de l'appareil est inévitable.When the operator exerts a force on the
La figure 6 montre l'appareil dans la position d'ouverture non cadenassé, suite à un déclenchement normal. On remarque que l'évidement ne coïncide pas avec l'ouverture 47, en empêchant le cadenassage. Ce dernier n'est possible que si on pousse la manette 44 en appui contre la butée 46.Figure 6 shows the device in the unlocked open position, following normal triggering. Note that the recess does not coincide with the
Sur la figure 6, il est possible de prévoir un ressort de compression 50 qui est monté de telle manière qu'il tend à s'opposer au déplacement de la manette 44 dans sa phase finale, c'est-à-dire vers l'appui contre la butée 46, lorsque les contacts 31 et 33 sont libres. Le ressort 50 oppose une résistance déterminée sur la manette dans la phase de déplacement dans laquelle les contacts sont d'ores et déjà ouverts, mais où la position de cadenassage n'est pas encore atteinte. Cette résistance permet de rendre l'utilisateur attentif à sa démarche en l'obligeant à appuyer son effort sur la manette.In FIG. 6, it is possible to provide a
Il est bien évident que le ressort pourrait être remplacé par une friction, ou tout autre organe ayant les mêmes fonctions, permettant d'attirer l'attention de l'utilisateur.It is obvious that the spring could be replaced by a friction, or any other member having the same functions, making it possible to attract the attention of the user.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504679 | 1995-04-13 | ||
FR9504679A FR2733087B1 (en) | 1995-04-13 | 1995-04-13 | ELECTRICAL APPARATUS AND IN PARTICULAR CIRCUIT-BREAKER EQUIPPED WITH A SAFETY DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0737991A1 true EP0737991A1 (en) | 1996-10-16 |
EP0737991B1 EP0737991B1 (en) | 2002-06-12 |
Family
ID=9478253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96410025A Expired - Lifetime EP0737991B1 (en) | 1995-04-13 | 1996-03-19 | Electric apparatus, especially circuit breaker provided with a security device |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0737991B1 (en) |
CN (1) | CN1056705C (en) |
AT (1) | ATE219282T1 (en) |
DE (1) | DE69621695T2 (en) |
ES (1) | ES2176422T3 (en) |
FR (1) | FR2733087B1 (en) |
HU (1) | HU218957B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143477A1 (en) * | 2000-04-07 | 2001-10-10 | Hager Electro S.A. | Safety device for an electrical apparatus like a circuit-breaker type |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE262732T1 (en) * | 1999-12-21 | 2004-04-15 | Hager Electro | SAFETY DEVICE FOR ELECTRICAL DEVICE |
DE102010020987B4 (en) | 2010-05-19 | 2012-04-05 | Eaton Industries Gmbh | Circuit breaker with locking device |
KR102007779B1 (en) * | 2018-02-06 | 2019-08-07 | 엘에스산전 주식회사 | Switchgear having earth switch |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0408466A2 (en) * | 1989-07-11 | 1991-01-16 | Merlin Gerin | Operating mechanism for an electric switch |
EP0450699A2 (en) * | 1990-04-04 | 1991-10-09 | GE Power Controls Italia S.p.a. | Enabling means for locking, by a padlock, hand control devices of electromechanical equipments |
-
1995
- 1995-04-13 FR FR9504679A patent/FR2733087B1/en not_active Expired - Fee Related
-
1996
- 1996-03-19 AT AT96410025T patent/ATE219282T1/en not_active IP Right Cessation
- 1996-03-19 EP EP96410025A patent/EP0737991B1/en not_active Expired - Lifetime
- 1996-03-19 DE DE69621695T patent/DE69621695T2/en not_active Expired - Fee Related
- 1996-03-19 ES ES96410025T patent/ES2176422T3/en not_active Expired - Lifetime
- 1996-04-11 HU HU9600942A patent/HU218957B/en not_active IP Right Cessation
- 1996-04-13 CN CN96105766A patent/CN1056705C/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0408466A2 (en) * | 1989-07-11 | 1991-01-16 | Merlin Gerin | Operating mechanism for an electric switch |
EP0450699A2 (en) * | 1990-04-04 | 1991-10-09 | GE Power Controls Italia S.p.a. | Enabling means for locking, by a padlock, hand control devices of electromechanical equipments |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143477A1 (en) * | 2000-04-07 | 2001-10-10 | Hager Electro S.A. | Safety device for an electrical apparatus like a circuit-breaker type |
Also Published As
Publication number | Publication date |
---|---|
HU218957B (en) | 2001-01-29 |
HUP9600942A3 (en) | 1999-04-28 |
ATE219282T1 (en) | 2002-06-15 |
CN1139287A (en) | 1997-01-01 |
FR2733087B1 (en) | 1997-06-06 |
HUP9600942A2 (en) | 1997-05-28 |
FR2733087A1 (en) | 1996-10-18 |
CN1056705C (en) | 2000-09-20 |
EP0737991B1 (en) | 2002-06-12 |
DE69621695T2 (en) | 2002-12-05 |
ES2176422T3 (en) | 2002-12-01 |
DE69621695D1 (en) | 2002-07-18 |
HU9600942D0 (en) | 1996-06-28 |
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