CN117747277A - Current transformer module for NH fusing isolating switch type electric cutting device - Google Patents
Current transformer module for NH fusing isolating switch type electric cutting device Download PDFInfo
- Publication number
- CN117747277A CN117747277A CN202311231353.8A CN202311231353A CN117747277A CN 117747277 A CN117747277 A CN 117747277A CN 202311231353 A CN202311231353 A CN 202311231353A CN 117747277 A CN117747277 A CN 117747277A
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- current transformer
- measuring unit
- output terminal
- transformer module
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- 238000000034 method Methods 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims description 58
- 230000001681 protective effect Effects 0.000 claims description 33
- 238000005259 measurement Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims 1
- 230000000295 complement effect Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 2
- 239000012777 electrically insulating material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
- H01H2085/0266—Structural association with a measurement device, e.g. a shunt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
- H01H2085/0291—Structural association with a current transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
- Transformers For Measuring Instruments (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention relates to a current transformer module for an NH fuse-disconnecting switch-type electrical disconnection device, an NH fuse-disconnecting switch-type electrical disconnection device and a method of mounting a current transformer module with an electrical disconnection device, the electrical disconnection device comprising a first and a second output terminal, the second output terminal being located above the first output terminal in a first direction, the terminals being offset from each other in a second direction substantially perpendicular to the first direction, the current transformer module comprising a first and a second measuring unit, the first and the second measuring unit comprising a first and a second housing, respectively, each housing having a first and a second assembly means, the current transformer module comprising an assembly support having an assembly means, the assembly means of the assembly support and the first assembly means of the first housing and the second assembly means of the second housing being arranged to assemble the first and the second housing to each other such that they are stacked in the first direction while being offset from each other in the second direction.
Description
Technical Field
The invention relates to the field of current transformer modules for NH-fuse disconnecting switch type electric cutting devices.
Background
The present invention relates to the field of three-stage electrical equipment, and more particularly to an NH-fuse disconnector-type electrical disconnect device comprising an output terminal at the top or bottom of the electrical disconnect device. In a known manner, in order for the customer to obtain the power consumption of the load supplied by the electrical cut-off device, it is known to add a current transformer module in the device. In existing devices, and as shown in publication DE10062644, it is sometimes difficult to add a measurement function without removing the entire electrical shut-off device from the bus bar system. For example, if an installer wishes to add a measurement to the device, then a choice must be made between adding auxiliary current transformers around some of the cables located at some point in the cabinet, and cutting off the supply to the bus bar system and removing the electrical cut-off device to add current transformers installed at the rear of the electrical cut-off device.
Publication EP2259284 shows a current transformer module which can be connected to the output terminal of an electrical cut-off device and which comprises two primary conductors lying in a plane, whereas the third primary conductor is separated from the plane. By removing one primary conductor from the plane covered by the other two primary conductors, the overall width of the current transformer module can be minimized. However, such current transformer modules are not suitable for certain output terminal geometries.
Disclosure of Invention
The object of the present invention is to overcome at least one of these drawbacks and to propose a compact and easy-to-install solution.
To this end, the invention relates to a current transformer module for an NH-fuse disconnecting switch-type electrical disconnection device comprising at least a first output terminal and a second output terminal, the second output terminal being located above the first output terminal in a first direction, the first output terminal and the second output terminal being offset from each other in a second direction substantially perpendicular to the first direction,
the current transformer module includes at least:
a first measuring unit comprising a first current transformer device and a first conductor comprising at least a first end, the first end of the first conductor being arranged to be connected to a first output terminal,
a second measuring unit comprising a second current transformer device and a second conductor comprising at least a first end, the first end of the second conductor being arranged to be connected to a second output terminal,
the current transformer module is characterized in that:
each of the first and second measuring units comprises a first and a second housing, each having a first and a second assembly means,
the current transformer module comprises an assembly support with an assembly device,
the assembly means of the assembly support and the first assembly means of the first housing and the second assembly means of the second housing are arranged to assemble the first housing and the second housing to each other, such that the first housing and the second housing are stacked in a first direction while being offset from each other in a second direction.
The invention also relates to an NH-fuse disconnecting switch type electric cutting device, comprising at least:
a first one of the output terminals is connected to a first one of the output terminals,
a second output terminal is provided for receiving the first signal,
the second output terminal is stacked on the first output terminal in a first direction, the first output terminal and the second output terminal are offset from each other in a second direction substantially perpendicular to the first direction,
a substrate from which the first output terminal and the second output terminal extend,
a current transformer module comprising at least a first measuring unit and a second measuring unit, the first measuring unit being connected to a first output terminal, the second measuring unit being connected to a second output terminal,
the electrical cut-off device is characterized in that the current transformer module is a current transformer module according to the invention.
The invention also relates to a method for mounting together a current transformer module according to the invention and an electrical cut-off device according to the invention, comprising at least:
a first step of assembling the first measuring unit with the component support, in which step the first measuring unit is assembled with the component support,
a second step of assembling the first measuring unit assembled to the component support with the base of the electrical cutoff device, in which step the first measuring unit assembled to the component support is assembled with the base of the electrical cutoff device, and a first end of the first conductor is connected to the first output terminal,
and a third step of assembling the first measuring unit assembled to the component support with the second measuring unit, in which the second measuring unit is assembled with the first measuring unit assembled to the component support, and the first end of the second conductor is connected to the second output terminal.
Drawings
The invention will be more readily understood by means of the following detailed description, which refers to some preferred embodiments provided by way of non-limiting example and explained with reference to the accompanying schematic drawings, in which:
figure 1 shows a perspective view of a first measuring unit assembled to the component support of a current transformer module according to the invention,
figure 2 shows a perspective view from the side of a first measuring unit assembled to the component support of the current transformer module according to the invention,
figure 3 shows a perspective view from the side of the first and second measuring units assembled to the assembly support of the current transformer module according to the invention,
fig. 4 shows a perspective view of a current transformer module according to the invention, comprising a first measuring unit, a second measuring unit and a third measuring unit assembled to an assembly support,
fig. 5 shows a perspective view of a current transformer module according to the invention, comprising a first protective cover of a first measuring unit,
fig. 6 shows a perspective view of a current transformer module according to the invention, comprising a first protective cover of a first measuring unit and a second protective cover of a second measuring unit,
fig. 7 shows a perspective view of a current transformer module according to the invention, comprising a first protective cover of a first measuring unit, a second protective cover of a second measuring unit and a third protective cover of a third measuring unit,
fig. 8 shows a perspective view of a current transformer module according to the invention, comprising a first protective cover of a first measuring unit, a second protective cover of a second measuring unit and a third protective cover of a third measuring unit,
figure 9 shows a perspective cross-sectional view of a first measuring unit of a current transformer module according to the invention,
figure 10 shows a side view of figure 9,
figure 11 shows a perspective view of a first measuring unit of a current transformer module according to the invention,
figure 12 shows a perspective view of a first measurement unit assembled to the component support of the current transformer module according to the invention,
figure 13 shows a perspective view of a first measuring unit assembled to the component support and the first protective cover of the current transformer module according to the invention,
figure 14 shows a perspective view from below of a first measuring unit assembled to the assembly support and the first protective cover of the current transformer module according to the invention,
FIG. 15 shows a cross-sectional view of FIG. 14, and
fig. 16 shows a cross-sectional view of fig. 14.
Detailed Description
As shown, the present invention relates to a current transformer module for an NH-fuse-disconnector-type electrical disconnection device (not shown) comprising at least a first output terminal (not shown) and a second output terminal (not shown), the second output terminal being located above the first output terminal in a first direction X, the first and second output terminals being offset from each other in a second direction Y substantially perpendicular to the first direction X.
The current transformer module includes at least:
a first measuring unit 1 comprising a first current transformer device CT and a first conductor 2, the first conductor 2 comprising at least a first end 3, the first end 3 being arranged to be connected to a first output terminal,
a second measuring unit 4 comprising a second current transformer device and a second conductor 5, the second conductor 5 comprising at least a first end 6, the first end 6 being arranged to be connected to a second output terminal.
According to the invention, the current transformer module is characterized in that:
each of the first measuring unit 1 and the second measuring unit 4 comprises a first housing 10 and a second housing 11, each having a first assembly means 13a and a second assembly means 13b,
the current transformer module comprises an assembly support 14 with assembly means 15,
the assembly means 15 of the assembly support 14 and the first assembly means 13a of the first housing 10 and the second assembly means 13b of the second housing 11 are arranged to assemble the first housing 10 and the second housing 11 to each other, such that the first housing 10 and the second housing 11 are stacked in the first direction X while being offset from each other in the second direction Y (fig. 3).
Advantageously, as a result of this construction and as is evident from fig. 3, a current transformer module can be proposed in the form of at least two first/second measuring units 1, 4 stacked and assembled on top of each other and which can be joined to an NH-fuse disconnector-type electrical cut-off device having at least a first output terminal and a second output terminal, which are arranged in two different planes while being parallel and stacked on top of each other. The installation can be performed simply by disconnecting the load normally connected downstream of the first output terminal and the second output terminal without separating the NH-fuse disconnecting switch type electrical cut-off device from the bus bar. The invention enables a customer to obtain a measurement of the power consumption of an electrical cut-off device, in particular of the current and/or voltage. To this end, the invention is fastened to the output terminal (for example, standard screw terminal) of an NH00 fuse disconnecting switch type electrical cut-off device.
Preferably, and as shown in fig. 4, the current transformer module for an NH fuse isolation switch type electrical cut-off device further has a third output terminal, which is located above the second output terminal in the first direction X, which is offset from each other in the second direction Y, the current transformer module further comprising a third measuring unit 7, which third measuring unit 7 comprises a third current transformer device and a third conductor 8, which third conductor 8 has at least a first end 9, which first end 9 is arranged to be connected to the third output terminal. The third measuring unit 7 comprises a third housing 12, the third housing 12 having a first assembly means 13a and a second assembly means 13b, the assembly means 15 of the assembly support 14 and the first assembly means 13a of the second housing 11 and the second assembly means 13b of the third housing 12 being arranged to assemble the second housing 11 and the third housing 12 to each other, such that the second housing 11 and the third housing 12 overlap in the first direction X while being offset from each other in the second direction Y.
Advantageously, as a result of this construction and as is evident from fig. 4, a current transformer module in the form of at least three first/second/third measuring units 1, 4, 7 stacked and assembled on each other and which can be joined to an NH-fuse disconnector-type electrical cut-off device having a first output terminal, a second output terminal and a third output terminal, which are arranged in three different planes while being parallel and stacked on each other, can be proposed. The installation can be performed simply by disconnecting the load normally connected downstream of the first output terminal, the second output terminal and the third output terminal without separating the NH-fuse disconnecting switch type electrical cutoff device from the bus bar. The invention enables a customer to obtain a measurement of the power consumption of an electrical cut-off device, in particular of the current and/or voltage. To this end, the invention is fastened to the output terminal (for example, standard screw terminal) of an NH00 fuse disconnecting switch type electrical cut-off device.
Preferably, and as shown in fig. 12, the assembly support 14 comprises fastening means 16, the fastening means 16 being arranged to assemble the assembly support 14 with one end of the base of the electrical cut-off device from which at least the first and second output terminals and optionally the third output terminal extend.
Advantageously, as a result of this arrangement, the current transformer module according to the invention can be assembled to the end of the base (not shown) of the electrical cut-off device from which the first output terminal, the second output terminal and, if necessary, the third output terminal extend.
Preferably, the assembly support 14 is assembled to the end of the base of the electrical cut-off device by translational movement in the first direction X, preferably with a sliding joint.
In the example particularly shown in fig. 12 and 16, the fastening means 16 comprise two elongated tracks parallel to each other and extending in the first direction X. The two elongate tracks protrude from a first fastening surface 38 of the assembly support 14 described below. Preferably, the two elongate tracks have an L-shaped cross-section.
Preferably, and as shown in fig. 4 to 6, the first end 3 of the first conductor 2, the first end 6 of the second conductor 5 and the first end 9 of the third conductor 8 are arranged in three parallel and superimposed planes.
Preferably, and as shown in fig. 4 to 8, the first, second and third housings 10, 11 and 12 are identical.
Advantageously, this configuration simplifies the design and manufacturing process. Obviously, this example is not limiting, and the first casing 10, the second casing 11, and the third casing 12 may be different.
Preferably, and as shown in fig. 2, 3, 11, 12 and 14, each of the first, second and third housings 10, 11 and 12 includes an upper surface 17 having a first guide 18 and a lower surface 19 having a second guide 20, the first and second guides 18 and 20 extending in a second direction Y to allow assembly of the second housing 11 with respect to the first housing 10 by translational movement in the second direction Y, and the third housing 12 with respect to the second housing 11, respectively.
Advantageously, the assembly of the second measuring unit 4 with the first measuring unit 1 is performed by a translational movement in the second direction Y, preferably with a sliding joint. Similarly, the assembly of the third measuring unit 7 with the second measuring unit 4 is performed by a translational movement in the second direction Y, preferably with a sliding joint. The assembly may advantageously be performed in a sequential manner. In this variant embodiment, the first assembly means 13a are formed by the first guide means 18 and the second assembly means 13b are formed by the second guide means 20. The first guide 18 and the second guide 20 are complementary in shape.
In the example particularly shown in fig. 1 to 6, 9 to 11 and 13, the first guiding means 18 comprise two elongated tracks parallel to each other and extending in the second direction Y. Two elongate tracks protrude from the upper surface 17. Preferably, the two elongate tracks have an L-shaped cross-section.
In the example particularly shown in fig. 11, 12, 14 and 15, the second guiding means 20 comprise two complementary elongated tracks parallel to each other and extending in the second direction Y. Two complementary elongate tracks project from the lower surface 19. Preferably, the two complementary elongate tracks have an L-shaped cross-section.
Advantageously, the two elongated tracks of the first guiding means 18 of the first housing 10 and the two complementary elongated tracks of the second guiding means 20 of the second housing 11 form a sliding joint. Similarly, the two elongated rails of the first guiding means 18 of the second housing 11 and the two complementary elongated rails of the second guiding means 20 of the third housing 12 form a sliding joint.
Preferably, and as shown in fig. 2, 3, 11, 12 and 14, the assembly support 14 includes a first upper surface 17a located in an extension of the upper surface 17 of the first housing 10 and a second upper surface 17b located in an extension of the upper surface 17 of the second housing 11, and each of the first upper surface 17a and the second upper surface 17b has a third guide 18a and a fourth guide 18b, respectively, the third guide 18a and the fourth guide 18b being configured to interact with the second guide 20 of the second housing 11 and the second guide 20 of the third housing 12, respectively.
Advantageously, the assembly of the second measuring unit 4 with the assembly support 14 is performed by a translational movement in the second direction Y, for example with a sliding joint. Similarly, the assembly of the third measuring unit 7 with the assembly support 14 is performed by a translational movement in the second direction Y, preferably with a sliding joint. The assembly may advantageously be performed in a sequential manner.
In the example particularly shown in fig. 1 and 2, each of the third 18a and fourth 18b guide means comprises two elongated tracks parallel to each other and extending in the second direction Y. The two elongate tracks protrude from the first upper surface 17a and the second upper surface 17b, respectively. Preferably, the two pairs of elongate tracks have an L-shaped cross-section. The two elongated tracks on the first upper surface 17a are located in an extension of the elongated tracks of the first guiding means 18 of the first housing 10 in the second direction Y. The two elongated tracks on the second upper surface 17b are located in the extension of the elongated tracks of the first guiding means 18 of the second housing 11 in the second direction Y.
Advantageously, the two elongated tracks of the first guide means 18 of the first housing 10 are associated with the two elongated tracks of the third guide means 18a of the assembly support 14 and with the two complementary elongated tracks of the second guide means 20 of the second housing 11, forming a sliding joint. Similarly, the two elongated rails of the first guiding means 18 of the second housing 11 are associated with the two elongated rails of the fourth guiding means 18b of the assembly support 14 and with the two complementary elongated rails of the second guiding means 20 of the third housing 12, forming a sliding joint.
Preferably, and as shown in fig. 10, 11, 12 and 14, each of the first, second and third housings 10, 11 and 12 includes a side mounting face 21, the side mounting face 21 having a fastening means 22 thereon, preferably a snap-fit type, the fastening means 22 of the first housing 10 being configured to allow fastening of the first housing 10 to the assembly support 14, the fastening means 22 of the second housing 11 being configured to allow fastening of the second housing 11 to the assembly support 14, and the fastening means 22 of the third housing 12 being configured to allow fastening of the third housing 12 to the base of the electrical cut-off device.
Advantageously, the fastening means 22 of the first housing 10 allow fastening the first housing 10 to said assembly support 14. Similarly, the fastening means 22 of the second housing 11 allow fastening the second housing 11 to the assembly support 14. Finally, the fastening means 22 of the third casing 12 allow fastening the third casing 12 to the base of the electrical cut-off device.
In the example particularly shown in fig. 10, 11, 12 and 14, the fastening means 22 are preferably formed by two members made of deformable material, which are spaced apart from each other and form a clip, respectively. The clip has a substantially contoured shape with a U-shaped cross-section. The free end of the clip is arranged to clip onto a protruding ridge of the second fastening face 39 of the assembly support 14 or onto a protruding ridge of the base end of the electrical cut-off device.
Preferably, and as shown in fig. 5, 6, 7, 8, 13, 14 and 16, the first measuring unit 1 comprises a first protective cover 23, the first protective cover 23 being arranged to cover at least the second output end 24 of the first conductor 2.
This is because the first conductor 2 comprises a second output 24 downstream of the first current transformer device CT. The second output 24 is arranged to be connected to a first cable (not shown).
Advantageously, the first protective cover 23 may be used to prevent access to the second output end 24 of the first conductor 2. This improves user security.
Preferably, and as shown in fig. 6, 7 and 8, the second measuring unit 4 comprises a second protective cover 25, the second protective cover 25 being arranged to cover at least the second output end 26 of the second conductor 5.
This is because the second conductor 5 comprises a second output 26 downstream of the second current transformer device. The second output 26 is arranged to be connected to a second cable.
Advantageously, the second protective cover 25 may be used to prevent access to the second output 26 of the second conductor 5. This provides a higher security for the user.
Preferably, and as shown in fig. 7 and 8, the third measuring unit 7 comprises a third protective cover 27, the third protective cover 27 being arranged to cover at least the first end 9 and the second output end 28 of the third conductor 8.
This is because the third conductor 8 comprises a second output 28 downstream of the second current transformer device. The second output 28 is arranged to be connected to a third cable. Thus, the current transformer module forms an interface between the electrical cut-off device and three cables supplying electrical current to downstream electrical loads.
Advantageously, a third protective cover 27 may be used to prevent access to the first end 9 and the second output end 28 of the third conductor 8. This improves user security. Preferably, the first, second and third protective covers 23, 25 and 27, and the first, second and third housings 10, 11 and 12 are configured to provide IP 2X-class protection. Thus, the current transformer module meets IP2X contact protection requirements.
Preferably, the first protective cover 23, the second protective cover 25 and the third protective cover 27 are made of an electrically insulating material, for example a polymeric material, such as plastic.
In the non-limiting example shown in the figures and particularly visible in fig. 9 to 11, the first measuring unit 1 comprises at least a first conductor 2, a first current transformer device CT and a first housing 10. The first housing 10 contains at least a first current transformer device CT and a portion of the first conductor 2. The first conductor 2 is made of an electrically conductive material, for example a metal such as copper. The first current transformer device CT makes it possible to measure the current flowing in the first conductor 2 and, by extension, the current flowing in the first output terminal. Preferably, the first current transformer device CT is a current transformer comprising a core or the like. The first conductor 2 comprises a first end 3 for connection to a first output terminal and an oppositely placed second output end 24, the second output end 24 being for connection to a load via a first cable. Preferably, the first conductor 2 comprises three parts. The first portion 29 is located outside the first housing 10. This portion takes the form of a bent plate having a first section comprising a first end 3, a second section substantially orthogonal to the first section, and a third section substantially parallel to the first section and partially resting on the upper surface 17 of the first housing 10. The second portion 30 takes the form of a hollow cylindrical rod connected by a first end to the third section and orthogonal thereto, and by a second end to a first portion of a third portion 31 described below. The hollow cylindrical rod preferably has a threaded screw 33 passing therethrough. The third section and the upper surface 17 have respective holes for the threaded screws 33 to pass through. The second portion 30 is located inside the first housing 10 and passes through the core. The third portion 31 takes the form of a flat plate, substantially parallel to the first and third sections of the first portion 29, and comprises a first portion housed in the first housing 10 and positioned close to the lower surface 19, and a second portion protruding from the first housing 10 and comprising the second output end 24. The first part has a hole through which a threaded screw 33 passes and is secured by a nut 34. The second output 24 also has a hole.
Similarly, the second measuring unit 4 has a similar configuration to the first measuring unit 1, and only the shape of the first portion 29 differs in proportion.
Similarly, the third measuring unit 7 has a similar configuration to the first measuring unit 1, and only the shape of the first portion 29 differs in proportion.
Preferably, the first end 3 of the first conductor 2, the first end 6 of the second conductor 5 and the first end 9 of the third conductor 8 are fork-shaped. This configuration allows connection to a screw type output terminal.
Preferably, the first protective cover 10, the second protective cover 11 and the third protective cover 12 are made of an electrically insulating material such as plastic.
Preferably, the first housing 10 and/or the second housing 11 and/or the third housing 12 have a crimp ring 43, respectively. Crimp ring 43 preferably protrudes from upper surface 17.
This feature is particularly useful for pricing applications. This is because crimp ring 43 allows the seal to pass therethrough.
In this case, the first protective cover 23, the second protective cover 25 and the third protective cover 27 each have a hole 47 allowing the crimp ring 43 to be bypassed.
Advantageously, a seal may be inserted into crimp ring 43 through the interior of bore 47.
Preferably, the first 10, second 11 and third 12 housings have one or more holes 44, 45, 46 to allow access to the test guidance points.
Preferably, each of the first, second and third housings 10, 11 and 12 is formed of two shells, namely, a lower shell 35 and an upper shell 36. This configuration facilitates the assembly of the first measuring unit 1, the second measuring unit 4 and the third measuring unit 7 in the factory.
Preferably, each of the first, second and third housings 10, 11 and 12 takes the form of a right parallelepiped, including an upper surface 17 and a lower surface 19 parallel to each other and joined to each other by four sides. The four side surfaces include a side mounting surface 21 and a connecting surface 32 that are parallel to each other, and two other side surfaces that are also parallel to each other that join the side mounting surface 21 to the connecting surface 32.
In the example shown in the figures, the assembly support 14 comprises two side faces 37 parallel to each other, the walls of the side faces 37 having an L-shaped surface, joined by two side fastening faces, called first fastening face 38 and second fastening face 39. The first fastening surface 38 comprises the fastening means 16. The assembly support 14 comprises a channel 40 for the first section of the first portion 29 of the first conductor 2. The channel 40 opens at a first window 41 in the first fastening surface 38, from which window 41 the first end 3 of the first conductor 2 protrudes. The channel 40 opens at a second window 42 in the second fastening surface 39. The first upper surface 17a and the second lower surface 17b are located at two different parallel heights.
The invention also relates to an NH-fuse disconnecting switch type electric cutting device, comprising at least:
a first one of the output terminals is connected to a first one of the output terminals,
a second output terminal is provided for receiving the first signal,
the second output terminal is stacked above the first output terminal in a first direction X, the first and second output terminals are offset from each other in a second direction Y substantially perpendicular to the first direction X,
a substrate from which the first output terminal and the second output terminal extend,
a current transformer module comprising at least a first measuring unit 1 and a second measuring unit 4, the first measuring unit 1 being connected to a first output terminal, the second measuring unit 4 being connected to a second output terminal,
the electrical cut-off device is characterized in that the current transformer module is a current transformer module according to the invention as described above.
The invention also relates to an NH fusing isolating switch type electric cutting device, which further comprises:
a third output terminal superposed over the second output terminal in the first direction X, and the second and third output terminals being offset from each other and extending from the substrate in the second direction Y,
the current transformer module further comprises a third measuring unit 7 connected to a third output terminal,
the electrical cut-off device is characterized in that the current transformer module is a current transformer module according to the invention as described above.
Preferably, the electrical cut-off device is an NH00 fuse link switch having a width of 50 mm.
The invention also relates to a method of installing a current transformer module according to the invention and as described above together with an electrical cut-off device according to the invention and as described above.
The method comprises at least:
a first step of assembling the first measuring unit 1 with the component support 14, in which step the first measuring unit 1 is assembled with the component support 14 (figures 1 and 2),
a second step of assembling the first measuring unit 1 assembled to the component support 14 with the base of the electrical cut-off device, in which step the first measuring unit 1 assembled to the component support 14 is assembled with the base of the electrical cut-off device, and the first end 3 of the first conductor 2 is connected to the first output terminal,
a third step of assembling the first measuring unit 1 assembled to the component support 14 with the second measuring unit 4, in which step the second measuring unit 4 is assembled with the first measuring unit 1 assembled to the component support 14 and the first end 6 of the second conductor 5 is connected to the second output terminal (fig. 3).
In a first step, the assembly of the first measuring unit 1 with the assembly support 14 is preferably performed by snap-fitting, preferably using the fastening means 22 described previously.
In a second step, the assembly of the first measuring unit 1 to the assembly support 14 with the base of the electrical cut-off device is preferably performed by means of a sliding joint, preferably using the fastening device 16 described previously.
In a third step, the assembly of the first measuring unit 1 and the second measuring unit 4 assembled to the assembly support 14 is preferably performed by a sliding joint, preferably by a translational movement in the second direction Y, using the above-mentioned assembly means 13a, 13b, 15.
Furthermore, the second measuring unit 4 is then assembled to the assembly support 14, preferably at the end of the translational movement, by means of the fastening means 22 described above.
Preferably, the method further comprises a fourth step of assembling the third measuring unit 7 with the second measuring unit 4, in which step the third measuring unit 7 is assembled with the second measuring unit 4 and the first end 9 of the third conductor 8 is connected to the third output terminal (fig. 4).
In a fourth step, the assembly of the third measuring unit 7 with the second measuring unit 4 is preferably performed by a sliding joint, preferably by a translational movement in the second direction Y using the above-mentioned assembly means 13a, 13b, 15.
Furthermore, the third measuring unit 7 is then assembled to the substrate, preferably at the end of the translational movement, by means of the fastening means 22 described above.
The method also preferably includes a fifth protection step in which the first protection cover 23 is assembled to the first housing 10 (fig. 5), preferably by snap-fitting, then the second protection cover 25 is assembled to the second housing 11 (fig. 6), preferably by snap-fitting, and then the third protection cover 27 is assembled to the third housing 12 (fig. 7 and 8), if desired.
At the end of the method, the current transformer module meets the IP2X contact protection requirements.
It is obvious that the invention is not limited to the embodiments described and represented in the drawings. Modifications may be made, particularly in matters of composition of the various elements or substitution by equivalent means, without departing from the scope of the invention.
Claims (16)
1. A current transformer module for an NH-fuse isolating switch type electrical cut-off device comprising at least a first output terminal and a second output terminal, said second output terminal being located above said first output terminal in a first direction (X), said first output terminal and said second output terminal being offset from each other in a second direction (Y) substantially perpendicular to said first direction (X),
the current transformer module includes at least:
a first measurement unit (1) comprising a first current transformer device (CT) and a first conductor (2) comprising at least a first end (3), the first end (3) of the first conductor being arranged to be connected to the first output terminal,
a second measurement unit (4) comprising a second current transformer device and a second conductor (5) comprising at least a first end (6), the first end (6) of the second conductor being arranged to be connected to the second output terminal,
the current transformer module is characterized in that:
each of the first measuring unit (1) and the second measuring unit (4) comprises a first housing (10) and a second housing (11), each of the first housing (10) and the second housing (11) having a first assembly means (13 a) and a second assembly means (13 b),
the current transformer module comprises a component support (14) with an assembly device (15),
-the assembly means (15) of the assembly support (14) and the first assembly means (13 a) of the first housing (10) and the second assembly means (13 b) of the second housing (11) are arranged to assemble the first housing (10) and the second housing (11) to each other, such that the first housing (10) and the second housing (11) overlap in the first direction (X) while being offset from each other in the second direction (Y).
2. The current transformer module according to claim 1, the NH-fuse isolating switch-type electrical disconnect device further comprising a third output terminal, which is located above the second output terminal in the first direction (X), which is offset from each other in the second direction (Y), characterized by further comprising a third measuring unit (7) comprising a third current transformer apparatus and a third conductor (8) having at least a first end (9), which first end (9) of the third conductor is arranged to be connected to the third output terminal, which third measuring unit (7) comprises a third housing (12) having a first assembly means (13 a) and a second assembly means (13 b), which assembly means (15) of the assembly support (14) are arranged to be assembled with the first assembly means (13 a) and the third housing (12) of the second housing (11) to each other in the first direction (X), which third housing (12) is arranged to be offset from each other in the second direction (Y).
3. Current transformer module according to any of claims 1-2, characterized in that the assembly support (14) comprises fastening means (16) arranged to assemble the assembly support (14) with one end of a base of the electrical cut-off device, from which end at least the first and second output terminals extend.
4. A current transformer module according to any one of claims 2 to 3, characterized in that the first end (3) of the first conductor (2), the first end (6) of the second conductor (5) and the first end (9) of the third conductor (8) are arranged in three parallel and superimposed planes.
5. The current transformer module according to any one of claims 2 to 4, characterized in that the first housing (10), the second housing (11) and the third housing (12) are identical.
6. The current transformer module according to any one of claims 2 to 5, characterized in that each of the first housing (10), the second housing (11) and the third housing (12) comprises an upper surface (17) with a first guiding means (18) and a lower surface (19) with a second guiding means (20), the first guiding means (18) and the second guiding means (20) extending in the second direction (Y) to allow assembly of the second housing (11) with respect to the first housing (10) by a translational movement in the second direction (Y), respectively, and the third housing (12) with respect to the second housing (11).
7. The current transformer module according to claim 6, characterized in that the assembly support (14) comprises a first upper surface (17 a) located in an extension of an upper surface (17) of the first housing (10) and a second upper surface (17 b) located in an extension of an upper surface (17) of the second housing (11), and that each of the first upper surface (17 a) and the second upper surface (17 b) has a third guide means (18 a) and a fourth guide means (18 b) configured to interact with a second guide means (20) of the second housing (11) and a second guide means (20) of the third housing (12), respectively.
8. The current transformer module according to any one of claims 3 to 7, characterized in that each of the first housing (10), the second housing (11) and the third housing (12) comprises a side mounting surface (21) comprising fastening means (22), preferably a snap fit, the fastening means (22) of the first housing (10) being configured to allow fastening of the first housing (10) to the assembly support (14), the fastening means (22) of the second housing (11) being configured to allow fastening of the second housing (11) to the assembly support (14), and the fastening means (22) of the third housing (12) being configured to allow fastening of the third housing (12) to the base of the electrical cut-off device.
9. Current transformer module according to any one of claims 1 to 8, characterized in that the first measuring unit (1) comprises a first protective cover (23) arranged to cover at least the second output end (24) of the first conductor (2).
10. Current transformer module according to any one of claims 1 to 9, characterized in that the second measuring unit (4) comprises a second protective cover (25) arranged to cover at least the second output end (26) of the second conductor (5).
11. Current transformer module according to any one of claims 2 to 10, characterized in that the third measuring unit (7) comprises a third protective cover (27) arranged to cover at least the first end (9) and the second output end (28) of the third conductor (8).
12. The current transformer module according to any one of claims 2 to 11, characterized in that the first housing (10) and/or the second housing (11) and/or the third housing (12) respectively have a crimp ring (43).
13. An NH fusing disconnecting switch type electrical disconnect device, comprising at least:
a first one of the output terminals is connected to a first one of the output terminals,
a second output terminal is provided for receiving the first signal,
the second output terminal being superimposed on the first output terminal in a first direction (X), the first and second output terminals being offset from each other in a second direction (Y) substantially perpendicular to the first direction (X),
a substrate from which the first output terminal and the second output terminal extend,
a current transformer module comprising at least a first measuring unit (1) and a second measuring unit (4), the first measuring unit (1) being connected to the first output terminal, the second measuring unit (4) being connected to the second output terminal,
the electrical cut-off device is characterized in that the current transformer module is a current transformer module according to any one of claims 1 to 12.
14. The NH fusing insulation switch type electrical shutoff device of claim 12, further comprising:
a third output terminal superposed above the second output terminal in the first direction (X), the second and third output terminals being offset from each other and extending from the substrate in the second direction (Y),
the current transformer module further comprises a third measuring unit (7) connected to the third output terminal,
the electrical cut-off device is characterized in that the current transformer module is a current transformer module according to any one of claims 2 to 13.
15. A method for mounting together a current transformer module according to any one of claims 1 to 12 and an electrical cut-off device according to any one of claims 13 to 14, comprising at least:
a first step of assembling the first measuring unit (1) with the component support (14), in which step the first measuring unit (1) is assembled with the component support (14),
a second step of assembling the first measuring unit (1) assembled to the assembly support (14) with a base of the electrical cut-off device, in which step the first measuring unit (1) assembled to the assembly support (14) is assembled with the base of the electrical cut-off device and a first end (3) of the first conductor (2) is connected to the first output terminal,
-a third step of assembling together the first measuring unit (1) assembled to the assembly support (14) and the second measuring unit (4), in which step the second measuring unit (4) is assembled together with the first measuring unit (1) assembled to the assembly support (14), and the first end (6) of the second conductor (5) is connected to the second output terminal.
16. Method for mounting a current transformer module according to any one of claims 2 to 12 with an electrical cut-off device according to claim 14, characterized by a fourth step of assembling the third measuring unit (7) with the second measuring unit (4), in which step the third measuring unit (7) is assembled with the second measuring unit (4) and the first end (9) of the third conductor (8) is connected to the third output terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2209636 | 2022-09-22 | ||
| FR2209636A FR3140202A1 (en) | 2022-09-22 | 2022-09-22 | Current transformation module for electrical switching equipment of the NH fuse disconnector type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117747277A true CN117747277A (en) | 2024-03-22 |
Family
ID=84488452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311231353.8A Pending CN117747277A (en) | 2022-09-22 | 2023-09-22 | Current transformer module for NH fusing isolating switch type electric cutting device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4343799A1 (en) |
| CN (1) | CN117747277A (en) |
| FR (1) | FR3140202A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10002800B4 (en) * | 2000-01-24 | 2005-12-29 | Wöhner GmbH & Co. KG Elektrotechnische Systeme | NH-fuse strip |
| DE10062644C1 (en) | 2000-12-15 | 2002-06-20 | Mueller Jean Ohg Elektrotech | Holder for inductive current transducer has metallic sleeve fitting through holding element inserted between fuse or load switch and inductive current transducer |
| DE102009026742A1 (en) | 2009-06-04 | 2010-12-09 | Efen Gmbh | Current transformer unit |
| PT2779200T (en) * | 2013-03-14 | 2018-08-06 | Pronutec S A U | Measurement module for a fuse block base |
-
2022
- 2022-09-22 FR FR2209636A patent/FR3140202A1/en active Pending
-
2023
- 2023-09-19 EP EP23198114.3A patent/EP4343799A1/en active Pending
- 2023-09-22 CN CN202311231353.8A patent/CN117747277A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4343799A1 (en) | 2024-03-27 |
| FR3140202A1 (en) | 2024-03-29 |
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