Assembly comprising an electrical switchgear of the nh fuse-disconnector type and a locking accessory

Abstract

Assembly comprising an electrical switching device of the NH fuse disconnector type and a locking accessory. The invention relates to an assembly comprising an electrical switching device (1) comprising a fuse holder (5) comprising a cover (6), a base (9), the fuse holder (5) being movable relative to the base (9) between a so-called closed contact position (PON) and a so-called open contact position, and a locking accessory (2) comprising a coupling portion (3) and a padlocking portion (4) characterized in that said cover (6) comprises a passage (11) arranged to allow said locking accessory (2) to pass through said cover (6) in a direction of movement in an insertion direction, said passage (11) and said coupling zone being substantially aligned in the so-called closed contact position (PON) and in the so-called open contact position.said locking accessory (2) is removable from said electrical switching device (1) and is configured to, in the coupling position (PC), pass through said passage (11) so that the coupling portion (3) is mechanically connected with said coupling area and that the locking portion (4) is at least partially protruding from the cover (6).

Description

[0001] The present invention relates to the field of assemblies comprising an electrical cut-off device of the NH fuse disconnector type and a locking accessory.

[0002] A locking accessory is already known which makes it possible to prevent unauthorized operation of an electrical switchgear of the NH fuse disconnector type. This locking accessory comprises a coupling portion intended to be coupled with the base of the electrical switchgear of the NH fuse disconnector type and a padlocking portion which makes it possible to receive a padlock.

[0003] However, the installation of this locking accessory requires opening and dismantling the fuse holder of the NH fuse disconnect switch type electrical switchgear to first couple the coupling portion to the base of the electrical switchgear, then to make holes in the fuse holder cover and finally to pass the padlocking portion through the holes in the fuse holder cover to allow the padlocking portion to protrude from the front face of the cover. As a result, for safety reasons, it is necessary to turn off the power supply to the NH fuse disconnect switch type electrical switchgear when installing the locking accessory, which is not satisfactory.Furthermore, installing the locking accessory is particularly tedious for the installer who must remove the fuse holder cover and modify it by making holes in it.

[0004] Furthermore, if the locking accessory is removed from the electrical switchgear, then the fuse holder cover no longer provides protection that meets the IP3X standard, which implies a risk to the user's safety.

[0005] The present invention aims to overcome at least one of these drawbacks and proposes to provide a solution making it easier to install the locking accessory and guaranteeing the safety of the operator.

[0006] To this end, the invention relates to an assembly comprising an electrical cut-off device of the NH fuse disconnector type and a locking accessory comprising at least one coupling portion and one padlocking portion, said electrical cut-off device comprising at least: a fuse holder comprising a cover comprising a front face and a receiving face arranged to receive at least one fuse, a base comprising at least one receiving area arranged to receive at least in part said at least one fuse holder, the fuse holder being movable relative to the base at least between a so-called closed contact position, in which said at least one fuse holder is received at least in part in said receiving area so that the receiving face is arranged on the side of said receiving area, and a so-called open contact position, in which said at least one fuse holder is arranged above said receiving area so that the front face is arranged on the side of said receiving area, said base comprises at least one coupling area of ​​said locking accessory arranged to allow coupling with the coupling portion in a coupling position,said assembly is characterized in that: said cover comprises at least one passage arranged to allow said locking accessory to pass through said cover in a direction of movement at least in one direction of insertion, said passage and said coupling zone being substantially aligned in the so-called closed contact position and in the so-called open contact position, said locking accessory is removable from said electrical switching apparatus and is configured to pass through said passage so that in the coupling position, the coupling portion is mechanically connected to said coupling zone and the padlocking portion is at least partly protruding from the cover so as to allow the installation of a padlock.

[0007] The invention also relates to an electrical cut-off device of the NH fuse disconnector type for an assembly according to the invention, comprising at least: a fuse holder comprising a cover comprising a front face and a receiving face arranged to receive at least one fuse, a base comprising at least one receiving area arranged to receive at least in part said at least one fuse holder, the fuse holder being movable relative to the base at least between a so-called closed contact position, in which said at least one fuse holder is received at least in part in said receiving area so that the receiving face is arranged on the side of said receiving area, and a so-called open contact position, in which said at least one fuse holder is arranged above said receiving area so that the front face is arranged on the side of said receiving area, said base comprises at least one coupling area of ​​said locking accessory arranged to allow coupling with the coupling portion in the coupling position,said electrical cut-off apparatus is characterized in that said cover comprises at least one passage arranged to allow said locking accessory to pass through said cover in a direction of movement at least in one direction of insertion, said passage and said coupling zone being substantially aligned in the so-called closed contact position and in the so-called open contact position.

[0008] The invention also relates to a locking accessory arranged to cooperate with an electrical cut-off apparatus according to the invention, comprising at least one coupling portion and one padlocking portion, said locking accessory is characterized in that said locking accessory is arranged to be removable from said electrical cut-off apparatus and is configured to pass through said passage so that in the coupling position, the coupling portion is mechanically connected to said coupling zone and the padlocking portion is at least partly protruding from the cover to allow the installation of a padlock.

[0009] The invention will be better understood from the following description, which relates to several preferred embodiments, given as non-limiting examples, and explained with reference to the appended schematic drawings, in which: [ Fig. 1 ] there figure 1 represents a perspective view of a locking accessory according to the invention, [ Fig. 2 ] there figure 2 represents a top view of the locking accessory according to the invention, [ Fig. 3 ] there figure 3 represents a perspective view from below of a portion of a fuse holder of an electrical cut-off device according to the invention, [ Fig. 4 ] there figure 4 represents a perspective view from above of a portion of a base of the electrical switching apparatus according to the invention, [ Fig. 5 ] there figure 5 represents a perspective and sectional view of a portion of the electrical switching apparatus according to the invention with the fuse holder in the so-called closed contact position and provided with a locking accessory according to the invention in a coupling position, [ Fig. 6 ] there figure 6 represents a sectional view of the portion of electrical switching apparatus and the locking accessory shown in figure 5 , [ Fig. 7 ] there figure 7 represents a perspective and sectional view of a portion of the electrical switching apparatus according to the invention with the fuse holder in the so-called open contact position and equipped with the locking accessory according to the invention in the coupling position, [ Fig. 8 ] there figure 8 represents a sectional view of the portion of electrical switching apparatus and the locking accessory shown in figure 7 , [ Fig. 9 ] there figure 9 represents a perspective and sectional view of a portion of the electrical switching apparatus according to the invention with the fuse holder in an intermediate position and provided with the locking accessory according to the invention in the coupling position, [ Fig. 10 ] there figure 10 represents a sectional view of the portion of electrical switching apparatus and the locking accessory shown in figure 9 , [ Fig. 11 ] there figure 11 represents a side sectional view of a portion of the base of the electrical switching apparatus according to the invention showing a coupling zone, [ Fig. 12 ] there figure 12 represents a front sectional view of a portion of the base of the electrical switching apparatus according to the invention showing two coupling zones, [ Fig. 13 ] there figure 13 represents a perspective view from above of a portion of a cover of the fuse holder of the electrical cut-off apparatus according to the invention.

[0010] An assembly according to the invention comprises an electrical cut-off device 1 of the NH fuse disconnector type and a locking accessory 2 comprising at least one coupling portion 3 and one padlocking portion 4. Said electrical cut-off device 1 comprises at least: a fuse holder 5 comprising a cover 6 comprising a front face 7 and a receiving face 8 arranged to receive at least one fuse, a base 9 comprising at least one receiving zone 10 arranged to receive at least in part said at least one fuse holder 5, the fuse holder 5 being movable relative to the base 9 at least between a so-called closed contact position PON, in which said at least one fuse holder 5 is received at least in part in said receiving zone 10 so that the receiving face 8 is arranged on the side of said receiving zone 10, and a so-called open contact position PPARK, in which said at least one fuse holder 5 is arranged above said receiving zone 10 so that the front face 7 is arranged on the side of said receiving zone 10, said base 9 comprises at least one coupling zone 12 of said locking accessory 2 arranged to allow coupling with the coupling portion 3 in a PC coupling position,

[0011] According to the invention, said assembly is characterized in that: said cover 6 comprises at least one passage 11 arranged to allow said locking accessory 2 to pass through said cover 6 in a direction of movement D1 at least in an insertion direction SI, said passage 11 and said coupling zone 12 being substantially aligned in the so-called closed contact position PON and in the so-called open contact position PPARK, said locking accessory 2 is removable from said electrical switching apparatus 1 and is configured to pass through said passage 11 so that in the coupling position PC, the coupling portion 3 is mechanically connected with said coupling zone 12 and the padlocking portion 4 is at least partly protruding from the cover 6 so as to allow the installation of a padlock (not shown).

[0012] Advantageously, the present invention makes it possible to lock at least one fuse holder 5 in at least two positions, namely the so-called closed contact position PON illustrated in figures 5 And 6 and the so-called open contact position PPARK illustrated in figures 7 And 8. The so-called closed contact position PON corresponds to a state of the electrical cut-off device 1 in which the circuit is closed and in which the electric current can flow. The so-called open contact position PPARK corresponds to a state of the electrical cut-off device 1 in which the circuit is open and in which the electric current cannot flow. As a result, in the so-called closed contact position PON, this configuration ensures that the circuit is not opened manually and in the so-called open contact position PPARK, this configuration allows the electrical cut-off device 1 to be locked out and prevents the circuit from being closed to ensure the safety of operators working on the circuit.Furthermore, this advantageous configuration allows the installation of the locking accessory 2 without having to first dismantle or modify the fuse holder 5 and therefore without having to stop the power supply to the electrical cut-off apparatus 1. Indeed, to install the locking accessory 2 according to the invention it is sufficient to introduce the locking accessory 2 into the passage 11 in the insertion direction SI without necessarily having to first dismantle the fuse holder 5 from the base 9 as illustrated by the . figures 5 à 8 . In reality, the locking accessory 2 is movable in translation in the passage 11 in the direction of movement D1 at least in the insertion direction SI. This is possible thanks to the particular arrangement of the passage 11 which thus allows the insertion of the locking accessory 2 from outside the electrical switching apparatus 1 without prior disassembly of the fuse holder 5. The locking accessory 2 is coupled with the base 9 by mechanical coupling of the coupling portion 3 with the coupling zone 12 in the coupling position PC. The subsequent installation of a padlock at the padlocking portion 4 makes it possible to lock the cover 6 of the fuse holder 5.

[0013] The direction of movement D1 is substantially perpendicular to the cover 6.

[0014] In the so-called closed contact position PON, the insertion direction SI is directed towards the front face 7.

[0015] In the so-called open contact position PPARK, the insertion direction SI is directed towards the receiving face 8.

[0016] To dismantle the locking accessory 2 from the electrical cut-off device 1, simply dismantle the fuse holder 5 from the base 9 as illustrated in figures 9 And 10 which show the disassembly operation and the fuse holder 5 in an intermediate position PI.

[0017] The passage 11 is further arranged to allow the fuse holder 5 to be removed from the base 9 without having to decouple the locking accessory 2 from the base 9 if no padlock is locked on the padlocking portion 4. Indeed, if the fuse holder 5 is removed from the base 9, the passage 11 is movable in translation relative to the locking accessory 2, which remains coupled to the base 9, in the direction of movement D1 and in a direction opposite to the direction of insertion SI.

[0018] As a result, in a disassembled position PD (not shown) of the fuse holder 5 in which the fuse holder 5 is disassembled from the base 9 and is not contained in the receiving area 10, the locking accessory 2 coupled to the base 9 is accessible and the operator can disassemble the locking accessory 2 in a subsequent step.

[0019] The coupling zone 12 of said locking accessory 2 is further arranged to allow coupling with the coupling portion 3 also in the disassembled position PD of the fuse holder 5.

[0020] The coupling capacity of the locking accessory 2 with the base 9 also advantageously makes it possible to ensure that in the event of disassembly of the fuse holder 5 in the disassembled position PD, the locking accessory 2 remains mechanically coupled to the base 9 in the coupling position PC and does not fall, in particular when the electrical switching apparatus 1 is arranged vertically.

[0021] Preferably, the passage 11 comprises a through sleeve or a through channel which opens at a first end onto a first opening located at the front face 7 and at a second end onto a second opening located at the receiving face 8. Preferably, the longitudinal axis of the through sleeve is substantially parallel to the direction of movement D1.

[0022] Preferably, the passage 11 and the locking accessory 2 have a section of complementary or identical shape, for example, rectangular as illustrated in the figures, to allow said locking accessory 2 to pass through said cover 6 in the direction of movement D1 at least in the direction of insertion SI and where appropriate also in the direction opposite to the direction of insertion SI. This example is not limiting and extends for example to sections of square or circular shape.

[0023] Preferably and as illustrated in the figures, the locking accessory 2 has a section diameter smaller than the section diameter of the passage 11 to allow said locking accessory 2 to pass through said cover 6 in the direction of movement D1 at least in the direction of insertion SI and where appropriate also in the direction opposite to the direction of insertion SI. This example is not limiting and extends for example to sections of square or circular shape.

[0024] Preferably, the coupling portion 3 comprises a first locking member 13, the coupling zone 12 comprises a second locking member 14, and in the coupling position PC, said first locking member 13 and said second locking member 14 are mechanically connected to each other preferably by form complementarity, for example by clipping, to prevent the displacement of the locking accessory 2 in a withdrawal direction SR opposite to the insertion direction SI in the casting position PC.

[0025] Advantageously, this configuration makes it possible to avoid the movement of the locking accessory 2 in the direction of withdrawal SR in the casting position PC.

[0026] Preferably, the first locking member 13 comprises a first through or blind opening 15 and the second locking member 14 comprises at least one hook 16.

[0027] Advantageously, in the coupling position PC, the hook 16 is hooked into the first through or blind opening 15, which allows the coupling of the locking accessory 2 with the base 9.

[0028] Preferably, the first through opening 15 is square in shape as illustrated in the example represented in particular by the figures 1 et 2 or circular according to an example not shown.

[0029] Preferably and as illustrated in particular by the figure 11 , the hook 16 has a ramp 23 on which the free end 18a of the coupling portion 3 described below can slide after passing through the passage 11 to facilitate the coupling of the locking accessory 2 with the base 9. The free end 18a of the coupling portion 3 may also comprise a beveled edge 24 to facilitate the sliding movement.

[0030] Preferably and as illustrated by the figures 5 à 11 , the coupling zone 12 comprises a stop 17 configured to abut against a free end 18a of the coupling portion 3 so as to prevent movement in the direction of movement D1 of the locking accessory 2 in the direction of insertion SI in the coupling position PC.

[0031] This configuration makes it possible to avoid the displacement of the locking accessory 2 in the insertion direction SI in the coupling position PC. This arrangement makes it possible to guarantee the adequate positioning of the padlocking portion 4 projecting from the cover 6 to allow the passage of a padlock.

[0032] Preferably, the coupling zone 12 comprises a housing 25, as illustrated in figure 11 , which is arranged to receive the coupling portion 3 of the locking accessory 2 in the coupling position PC.

[0033] The housing 25 preferably comprises the second locking member 14, for example in the form of the hook 16.

[0034] This housing 25 comprises a first wall 26 on which the second locking member 14 is mounted, for example in the form of the hook 16, and where appropriate a second wall 27 substantially parallel and spaced from the first wall 26 by a space E to allow the insertion of the coupling portion 3 of the locking accessory 2.

[0035] A first holding member 28, for example in the form of a holding tab, is preferably arranged on the first wall 26 in the extension of the second locking member 14 to prevent the locking accessory 2 from falling if the fuse holder 5 is removed from the base 9 and is in the dismantled position PD, in the case where the electrical cut-off apparatus 1 is arranged vertically.

[0036] A second holding member 29, for example in the form of a finger or a holding tab, is preferably arranged on the second wall 27 opposite the first holding member 28 to prevent the locking accessory 2 from being uncoupled inadvertently or intentionally, i.e. without dismantling the padlock. This geometry also has the function of preventing the locking accessory 2 from falling when the fuse holder 5 is dismantled.

[0037] Preferably, the padlocking portion 4 comprises at least one first orifice 19 arranged to be crossed by a hoop of said padlock in the coupling position PC.

[0038] In this case, the padlocking portion 4 comprises for example the first orifice 19 and a second orifice 20 at a distance from each other, the first orifice 19 being arranged to be crossed by said arch of said padlock in the coupling position PC and in the so-called closed contact position PON, and the second orifice 20 being arranged to be crossed by said arch of said padlock in the coupling position PC and in the so-called open contact position PPARK.

[0039] Advantageously, as illustrated in particular by the figures 1, 2 , 5 à 8 , the first orifice 19 and / or the second orifice 20 allow the use of the same locking accessory 2 in the so-called closed contact position PON and in the so-called open contact position PPARK.

[0040] Thus, the first orifice 19 makes it possible to receive the arch of the padlock in the so-called closed contact position PON, as shown in figures 5 And 6 .

[0041] Thus, the second orifice 20 makes it possible to receive the arch of the padlock in the so-called open contact position PPARK, as shown in figures 7 And 8 .

[0042] The locking portion 4 has a free end 18b which is opposite the free end 18a of the coupling portion 3.

[0043] The second orifice 20 is located closer to the free end 18b of the locking portion 4 than the first orifice 19, as illustrated in particular by figures 1 et 2 .

[0044] The first orifice 19 and / or the second orifice 20 are preferably circular holes.

[0045] Preferably, the first hole 19 and / or the second hole 20 are configured to be compatible with a padlock having a maximum size of 8 millimeters in diameter.

[0046] Preferably, said locking accessory 2 comprises at least one first marking 21 configured to represent the direction of insertion of said locking accessory 2 through said passage 11.

[0047] Advantageously, the first marking 21 makes it possible to indicate to the user the direction of insertion which is substantially parallel to the direction of introduction SI.

[0048] This first marking 21 may comprise one or more symbols. In the example illustrated in the figures, the first marking 21 comprises an arrow directed towards the free end 18a of the coupling portion 3 and the word “INSERT”. This example is not limiting.

[0049] For example, said cover 6 or said base 9 comprises a storage housing 22 configured to store said locking accessory 2 in said cover 6 or in said base in a storage position PS of the locking accessory 2.

[0050] Advantageously, this configuration makes it possible to store the locking accessory 2 in a storage position PS outside of its use either in the cover 6 or in the base 9, as illustrated by figures 7 à 10 .

[0051] The storage housing 22 is preferably located in the cover 6 for reasons of perceived safety for the user.

[0052] The storage housing 22 of said locking accessory 2 is further arranged to allow coupling with the coupling portion 3 in the storage position PS. For this purpose, the storage housing comprises a coupling zone 30 of its own similar to the coupling zone 12 of the base 9 and which is arranged to allow coupling with the coupling portion 3 in a storage position PS.

[0053] Preferably, the cover 6 comprises on the front face 7 and / or on the receiving face 8 a second marking 31 which represents the function of the passage 11, namely for locking and unlocking the fuse holder 5 using a padlock. This example is not limiting.

[0054] For example, the second marking 31 may comprise one or more symbols. In the example illustrated in particular in the figures 3 And 13 , the second marking 31 comprises a symbol representative of an open padlock and a symbol representative of a closed padlock which are spaced apart by an arrow whose direction goes from the open padlock to the closed padlock. This example is not limiting.

[0055] Preferably, said assembly is in the form of a kit.

[0056] The invention also relates to an electrical cut-off device 1 of the NH fuse disconnector type for an assembly according to the invention described above, comprising at least: a fuse holder 5 comprising a cover 6 comprising a front face 7 and a receiving face 8 arranged to receive at least one fuse, a base 9 comprising at least one receiving zone 10 arranged to receive at least in part said at least one fuse holder 5, the fuse holder 5 being movable relative to the base 9 at least between a so-called closed contact position PON, in which said at least one fuse holder 5 is received at least in part in said receiving zone 10 so that the receiving face 8 is arranged on the side of said receiving zone 10, and a so-called open contact position PPARK, in which said at least one fuse holder 5 is arranged above said receiving zone 10 so that the front face 7 is arranged on the side of said receiving zone 10, said base 9 comprises at least one coupling zone 12 of said locking accessory 2 arranged to allow coupling with the coupling portion 3 in said PC coupling position.

[0057] According to the invention, said electrical cut-off apparatus 1 is characterized in that said cover 6 comprises at least one passage 11 arranged to allow said locking accessory 2 to pass through said cover 6 in a direction of movement D1 at least in one direction of introduction SI, said passage 11 and said coupling zone 12 being substantially aligned in the so-called closed contact position PON and in the so-called open contact position PPARK.

[0058] Preferably, the electrical cut-off device 1 is a NH fuse disconnector.

[0059] The NH fuse disconnector can be single-pole and include one pole or three-pole and include three poles.

[0060] In the case of a three-pole fuse disconnector, the latter comprises a single fuse holder 5 carrying three fuses.

[0061] In the case of a single-pole fuse disconnector, the latter comprises three fuse holders 5, each carrying a fuse.

[0062] Preferably, in the case of a three-pole or single-pole fused disconnector comprising three fuses, the three fuses are aligned in a vertical direction D2.

[0063] The three-pole or single-pole fuse disconnector can be of type NH00, i.e. have a size 00.

[0064] The three-pole or single-pole fuse disconnector can be of type NH1 or NH2 or NH3, i.e. have a size 01, 02 or 03.

[0065] Advantageously, the solution according to the invention can be adapted to the entire range of fuse disconnectors described above.

[0066] For example, for a three-pole fuse disconnector of size 01, 02 or 03 comprising a single fuse holder 5 and three fuses, the cover 6 comprises at least one passage 11 and preferably two passages 11, i.e. a first passage 11a and a second passage 11b and the base 9 comprises at least two coupling zones 12 as illustrated in figures 4 And 12 . Among said at least two coupling zones 12 at least one first coupling zone 12a and one second coupling zone 12b are respectively arranged opposite the first passage 11a and the second passage 11b in the so-called closed contact position PON and are respectively arranged opposite the second passage 11b and the first passage 11a in the so-called open contact position PPARK.

[0067] For example, for a single-pole fuse disconnector of size 01, 02 or 03 comprising three fuse holders 5 each comprising a fuse, each cover 6 comprises at least one passage 11 and preferably two passages 11, namely a first passage 11a and a second passage 11b, and the base 9 comprises at least three pairs of coupling zones 12. Each pair of coupling zones 12 comprises at least a first coupling zone 12a and a second coupling zone 12b which are respectively arranged opposite the first passage 11a and the second passage 11b in the so-called closed contact position PON and are respectively arranged opposite the second passage 11b and the first passage 11a in the so-called open contact position PPARK.

[0068] Preferably, the base 9 of a three-pole fuse disconnector of size 01, 02 or 03 comprising a single fuse holder 5 or of a single-pole fuse disconnector comprising three fuse holders 5 comprises at least six coupling zones 12 and preferably six pairs of coupling zones 12. Thus, the current output and the current input can be reversed.

[0069] For example, for a size 00 three-pole fuse disconnector comprising a single fuse holder 5 and three fuses, the cover 6 preferably comprises a single passage 11 arranged in the center in a transverse direction and the base 9 comprises a single coupling zone 12 arranged in the center in the transverse direction. The coupling zone 12 is arranged opposite the passage 11 in the so-called closed contact position PON and in the so-called open contact position PPARK.

[0070] For example, for a single-pole fuse disconnector of size 00 comprising three fuse holders 5 each comprising a fuse, each cover 6 preferably comprises a single passage 11 arranged in the center in a transverse direction and the base 9 comprises a single coupling zone 12 arranged in the center in the transverse direction. The coupling zone 12 is arranged opposite the passage 11 in the so-called closed contact position PON and in the so-called open contact position PPARK.

[0071] Preferably, the base 9 of a size 00 three-pole fused disconnect switch comprising a single fuse holder 5 or a single-pole fused disconnect switch comprising three fuse holders 5 comprises six coupling zones 12. Thus, the current output and the current input can be reversed.

[0072] The invention also relates to a locking accessory 2 arranged to cooperate with an electrical cut-off device 1 according to the invention and comprising at least one coupling portion 3 and one padlocking portion 4.

[0073] According to the invention, said locking accessory is characterized in that said locking accessory 2 is arranged to be removable from said electrical cut-off device 1 and is configured to pass through said passage 11 so that in the coupling position PC, the coupling portion 3 is mechanically connected with said coupling zone 12 and the padlocking portion 4 is at least partly projecting from the cover 6 to allow the installation of a padlock.

[0074] Advantageously, the locking accessory 2 is a distinct entity separate from the electrical cut-off device 1. It can therefore be marketed separately from the electrical cut-off device 1 or in the form of a kit.

[0075] For example, and as illustrated by the figures 1, 2 , 5 à 10 , the locking accessory 2 is a tab and has a substantially planar shape. The tab may have a rectangular shape. Preferably, the section of the tab is rectangular.

[0076] Preferably, the length of the locking accessory 2 is greater than the length of the passage 11.

[0077] Preferably, the locking accessory 2 is made of an electrically non-conductive or electrically insulating material, for example a polymer material, such as plastic.

[0078] The invention also relates to a method for locking and unlocking the electrical cut-off apparatus 1 with the locking accessory 2 according to the invention. It comprises at least one operation of locking the electrical cut-off apparatus 1 with the locking accessory 2 and subsequently, if necessary, an operation of unlocking the electrical cut-off apparatus 1.

[0079] The locking operation of the electrical switching apparatus 1 is described below in the so-called closed contact position PON or in the so-called open contact position PPARK. The locking accessory 2 is inserted into the passage 11 of the cover 6. After insertion, the locking accessory 2 is mechanically coupled to the base 9 via the coupling zone 12 and the coupling portion 3, preferably by clipping. Then, a padlock is installed at the padlocking portion 4 to lock the cover 6.

[0080] The unlocking operation of the electrical switching device 1 is described below in the so-called closed contact position PON or in the so-called open contact position PPARK. The padlock is removed from the padlocking portion 4.

[0081] In a subsequent disassembly operation, the fuse holder 5 is removed from the base 9 in the disassembled position PD. Without the fuse holder 5, the locking accessory 2 is accessible and can be disassembled from the base 9 by decoupling the coupling area 12 with the coupling portion 3 in a decoupled position (not shown).

[0082] Of course, the invention is not limited to the embodiments described and shown in the attached drawings. Modifications remain possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

1. Assembly comprising an electrical cut-off device (1) of the NH fuse disconnector type and a locking accessory (2) comprising at least one coupling portion (3) and one padlocking portion (4), said electrical cut-off device (1) comprising at least: - a fuse holder (5) comprising a cover (6) comprising a front face (7) and a receiving face (8) arranged to receive at least one fuse, - a base (9) comprising at least one receiving zone (10) arranged to receive at least in part said at least one fuse holder (5), the fuse holder (5) being movable relative to the base (9) at least between a so-called closed contact position (PON), in which said at least one fuse holder (5) is received at least in part in said receiving zone (10) so that the receiving face (8) is arranged on the side of said receiving zone (10), and a so-called open contact position (PPARK),wherein said at least one fuse holder (5) is arranged above said receiving area (10) so that the front face (7) is arranged on the side of said receiving area (10), said base (9) comprises at least one coupling area (12) of said locking accessory (2) arranged to allow coupling with the coupling portion (3) in a coupling position (PC), said assembly is, characterized in that: said cover (6) comprises at least one passage (11) arranged to allow said locking accessory (2) to pass through said cover (6) in a direction of movement (D1) at least in one direction of insertion (SI), said passage (11) and said coupling zone (12) being substantially aligned in the so-called closed contact position (PON) and in the so-called open contact position (PPARK), said locking accessory (2) is removable from said electrical switching apparatus (1) and is configured to pass through said passage (11) so that in the coupling position (PC), the coupling portion (3) is mechanically connected with said coupling zone (12) and the padlocking portion (4) is at least partly protruding from the cover (6) so as to allow the installation of a padlock.

2. Assembly according to claim 1, characterized in that the coupling portion (3) comprises a first locking member (13), in thatthe coupling zone (12) comprises a second locking member (14), and in that in the coupling position (PC), said first locking member (13) and said second locking member (14) are mechanically connected to each other preferably by form fit, for example by clipping, to prevent the locking accessory (2) from moving in a withdrawal direction (SR) opposite to the insertion direction (SI) in the casting position (PC).

3. Assembly according to claim 2, characterized in that the first locking member (13) comprises a first through opening (15) or blind opening and in that the second locking member (14) comprises at least one hook (16).

4. Assembly according to any one of claims 2 to 3, characterized in thatthe coupling zone (12) comprises a stop (17) configured to abut against a free end (18a) of the coupling portion (3) so as to prevent movement in the direction of movement (D1) of the locking accessory (2) in the direction of insertion (SI) in the coupling position (PC).

5. Assembly according to any one of claims 1 to 4, characterized in that the padlocking portion (4) comprises at least one first orifice (19) arranged to be crossed by a hoop of said padlock in the coupling position (PC).

6. Assembly according to claim 5, characterized in thatthe padlocking portion (4) comprises the first orifice (19) and a second orifice (20) at a distance from each other, the first orifice (19) being arranged to be crossed by said arch of said padlock in the coupling position (PC) and in the so-called closed contact position (PON), and the second orifice (20) being arranged to be crossed by said arch of said padlock in the coupling position (PC) and in the so-called open contact position (PPARK).

7. Assembly according to any one of claims 1 to 6, characterized in that said locking accessory (2) comprises at least a first marking (21) configured to represent the direction of insertion of said locking accessory (2) through said passage (11).

8. Assembly according to any one of claims 1 to 7, characterized in thatsaid cover (6) or said base (9) comprises a storage housing (22) configured to store said locking accessory (2) in said cover (6) or in said base (9) in a storage position (PS) of the locking accessory (2).

9. Electrical switching apparatus (1) of the NH fuse disconnector type for an assembly according to any one of claims 1 to 8, comprising at least: - a fuse holder (5) comprising a cover (6) comprising a front face (7) and a receiving face (8) arranged to receive at least one fuse, - a base (9) comprising at least one receiving zone (10) arranged to receive at least in part said at least one fuse holder (5), the fuse holder (5) being movable relative to the base (9) at least between a so-called closed contact position (PON), in which said at least one fuse holder (5) is received at least in part in said receiving zone (10) so that the receiving face (8) is arranged on the side of said receiving zone (10), and a so-called open contact position (PPARK),wherein said at least one fuse holder (5) is arranged above said receiving area (10) so that the front face (7) is arranged on the side of said receiving area (10), said base (9) comprises at least one coupling area (12) of said locking accessory (2) arranged to allow coupling with the coupling portion (3) in the coupling position (PC), said electrical cut-off apparatus (1) is, characterized in that said cover (6) comprises at least one passage (11) arranged to allow said locking accessory (2) to pass through said cover (6) in a direction of movement (D1) at least in one direction of insertion (SI), said passage (11) and said coupling zone (12) being substantially aligned in the so-called closed contact position (PON) and in the so-called open contact position (PPARK).

10. Locking accessory (2) arranged to cooperate with an electrical cut-off device (1) according to claim 9, comprising at least one coupling portion (3) and one padlocking portion (4), said locking accessory (2) is characterized in that said locking accessory (2) is arranged to be removable from said electrical cut-off device (1) and is configured to pass through said passage (11) so that in the coupling position (PC), the coupling portion (3) is mechanically connected with said coupling zone (12) and the padlocking portion (4) is at least partly protruding from the cover (6) to allow the installation of a padlock.

11. Locking accessory (2) according to claim 10, characterized in that the locking accessory (2) is a tab and has a substantially flat shape.