Modular fuse circuit breaker system and measuring module for such a system

Abstract

A modular fuse switch-disconnector system comprises a functional module and a measuring module. The functional module comprises one or more functional module mounting elements for mounting the functional module to one or more busbars; a functional module housing for inserting one or more fuse links into the functional module housing and for removing the one or more fuse links from the functional module housing; and an operating unit that is arranged to be movable relative to the functional module housing between a first operating unit position and a second operating unit position, wherein the operating unit can be locked in the first operating unit position and in the second operating unit position, respectively. The measuring module is configured for mounting on the functional module and for measuring the operating unit position.

Description

[0001] The present invention relates to a modular fuse switch disconnector system.

[0002] Fuse switch disconnectors are known, for example, from EP 2 584 577 B1, EP 3 016 122 A1, and DE 20 2019 100 399 U1. They are particularly suitable for connecting electrical devices and are used in particular to protect against overcurrents and short circuits. Other switching devices are known from AT 409 675 B and EP 4 068 329 A1.

[0003] It is an object of the present invention to further improve such a fuse switch disconnector with regard to user-friendliness and taking into account the desired applications.

[0004] This object is achieved by a modular fuse switch disconnector system according to claim 1 and a measuring module according to claim 15. Claims 2 to 14 relate to particularly advantageous implementations of the fuse switch disconnector system according to claim 1.

[0005] According to the present invention, a modular fuse switch disconnector system comprises a functional module and a measuring module.

[0006] The functional module comprises one or more functional module mounting elements for mounting the functional module to one or more busbars, preferably three functional module mounting elements for mounting the functional module to three busbars for a three-pole fuse switch-disconnector system. The one or more functional module mounting elements can in particular comprise holding elements and / or clamping elements and can in particular be hook-shaped in order to each define a receiving area for a busbar. When the functional module is mounted on the one or more busbars, the functional module can draw power from the one or more busbars and, for example, switchably transmit this power to one or more connectable cable branches. The one or more busbars can run parallel, in particular parallel to an X direction.

[0007] The functional module further comprises a functional module housing for inserting one or more fuse links or fuse plugs into the functional module housing and for removing the one or more fuse links from the functional module housing. The functional module housing can be made, in particular, of plastic. The one or more fuse links can serve, in particular, to protect against overcurrents and short circuits when the functional module draws power from the one or more busbars and transmits it to one or more devices via the one or more cable branches. The functional module housing can comprise a functional module cover unit which, when the functional module is mounted on the one or more busbars, is arranged parallel to the X direction and a Y direction, wherein the Y direction is perpendicular to the X direction.The functional module may have a longitudinal direction and a transverse direction, wherein, when the functional module is mounted on the one or more busbars, the transverse direction of the functional module may be parallel to the X-direction and the longitudinal direction of the functional module may be parallel to the Y-direction.

[0008] The functional module further comprises an operating unit that is arranged to be movable, preferably rotatable, relative to the functional module housing between a first operating unit position and a second operating unit position, wherein the operating unit can be locked in the first operating unit position and in the second operating unit position. The operating unit can in particular be arranged on the functional module cover unit. The operating unit can be arranged to be rotatable about a Z direction, wherein the Z direction is perpendicular to the X direction and the Y direction. The operating unit can in particular be a rotary knob or comprise a rotary knob. The first operating unit position and the second operating unit position can each correspond to a first switching state and a second switching state of the functional module, respectively.By moving the control unit into the first control unit position and / or locking the control unit in the first control unit position, the function module can be brought into the first switching state, and by moving the control unit into the second control unit position and / or locking the control unit in the second control unit position, the function module can be brought into the second switching state. The first switching state can in particular be a switched-on state or operating state of the function module, in which the fuse links are under current drawn from the busbars. The second switching state can in particular be a switched-off state or maintenance state of the function module, in which the fuse links are de-energized. In the switched-off state, the fuse links in particular can be removed from the housing in order to service or replace them.The functional module may further comprise a locking unit configured to lock the operating unit in the first operating unit position and to lock the operating unit in the second operating unit position. When the operating unit is locked in the first operating unit position, a first minimum force may be required to move the operating unit away from the first operating unit position, in particular to the second operating unit position. When the operating unit is locked in the second operating unit position, a second minimum force may be required to move the operating unit away from the second operating unit position, in particular to the first operating unit position. The second minimum force may, in particular, be greater than the spring force of the spring element, which is described further below.

[0009] It should be noted that the functional module can further be configured to prevent or block movement of the control unit relative to the functional module housing, e.g., when the fuse links are not inserted into the functional module housing. If the first control unit position corresponds to the switched-on state of the functional module and the second control unit position corresponds to the switched-off state of the functional module, as described above, the functional module can, for example, prevent the control unit from being moved to the first control unit position when the fuse links are removed from the functional module housing. Furthermore, the functional module can be configured to prevent removal of the fuse links from the functional module housing, e.g., by mechanically locking the fuse links when the control unit is in the first control unit position, e.g.,when the function module is in the power-on state. This can prevent, for example, a user from removing or changing a fuse link while it is live.

[0010] The measuring module comprises one or more measuring module mounting elements for mounting the measuring module to the functional module, preferably three measuring module mounting elements for a three-pole fuse switch-disconnector system. The one or more measuring module mounting elements can in particular comprise one or more connection lugs, as described further below. The measuring module further comprises a measuring module housing. The measuring module housing can in particular be made of plastic. The measuring module further comprises a measuring unit that is arranged to be movable relative to the measuring module housing between a first measuring unit position and a second measuring unit position, preferably linearly movable and / or movable along or substantially along a longitudinal direction of the measuring module.When the functional module is mounted on the one or more busbars and the measuring module is mounted on the functional module (in particular when, as described later, the measuring module is in the measuring module operating position relative to the functional module), the longitudinal direction of the measuring module may be parallel to the Y direction.

[0011] The measuring module further comprises a spring element or a spring for generating a spring force or restoring force or preload force for preloading the measuring unit in the direction of the first measuring unit position. In particular, when an external force acting on the measuring unit moves the measuring unit from the first measuring unit position towards the second measuring unit position, the spring element can be elastically deformed and thereby generate a spring force which acts on the measuring unit and counteracts the external force. In particular, the spring force can cause the measuring unit to be preloaded in the direction of the first measuring unit position or, when no external force acts on the measuring unit anymore, the measuring unit is moved back to the first measuring unit position.In particular, when the measuring module is in the measuring module operating position, the spring force may point in a direction that is opposite to a direction of movement of the measuring module from the measuring module removal position to the measuring module operating position.

[0012] The measuring unit comprises a locking element and a locking element, which is arranged to be movable, preferably linearly movable, relative to the locking element between a locking element operating position and a locking element mounting position along a displacement direction. The displacement direction can in particular run parallel to a transverse direction of the measuring module and can in particular run perpendicular to the longitudinal direction of the measuring module. When the functional module is mounted on the one or more busbars and the measuring module is mounted on the functional module (in particular when, as described later, the measuring module is in the measuring module operating position relative to the functional module), the transverse direction of the measuring module can run parallel to the X direction.

[0013] When the locking element is in the locking element mounting position, the measuring module is arranged to be movable relative to the functional module between a measuring module removal position and a measuring module operating position, preferably linearly movable and / or movable along or substantially along a longitudinal direction of the functional module. As described above, when the functional module is mounted on the one or more busbars, the longitudinal direction of the functional module can run parallel to the Y direction. When the measuring module is in the measuring module operating position, the longitudinal direction of the measuring module can run parallel to the longitudinal direction of the functional module, in particular parallel to the Y direction. In this case, the transverse direction of the measuring module can also run parallel to the transverse direction of the functional module, in particular parallel to the X direction.

[0014] The fuse switch disconnector system is configured such that when the measuring module is in the measuring module operating position and the locking element is in the locking element operating position and the operating unit of the functional module is moved (by an external force that is greater than the spring force of the spring element) from the first operating unit position to the second operating unit position, the operating unit exerts a force on the locking element (by transmitting the external force to the locking element) which causes the measuring unit to be moved from the first measuring unit position to the second measuring unit position against the spring force of the spring element.

[0015] The fuse switch disconnector system according to the invention enables simple and user-friendly measurement, via the measuring module, of the position of the operating unit and thus, for example, of the switching state of the functional module: When the operating unit is moved from the first operating unit position to the second operating unit position, the operating unit exerts a force on the locking element, which causes the measuring unit to be moved from the first measuring unit position to the second measuring unit position against the spring force of the spring element. This allows the measuring module to determine that the operating unit is in the second measuring unit position.The fact that the operating unit can be locked in the second operating unit position further prevents the operating unit from being moved back from the second operating unit position to the first operating unit position by the spring force of the spring element when no external force is acting on the operating unit. Furthermore, when the operating unit is moved from the second operating unit position to the first operating unit position, the measuring unit can be moved from the second measuring unit position to the first measuring unit position by the spring force of the spring element. This allows the measuring module to determine that the operating unit is in the first operating unit position. This increases user-friendliness.

[0016] Furthermore, the fuse switch disconnector system according to the invention enables simple installation of the measuring module on the functional module. Because the measuring unit comprises the locking element and the locking element, which are arranged to be movable relative to one another, it is particularly possible to move the measuring module from the measuring module removal position to the measuring module operating position without the measuring unit colliding with the operating unit. To install the measuring module on the functional module, the operating unit can first be locked in the second operating unit position and the locking element moved into the locking element installation position. The measuring module can then be moved relative to the functional module from the measuring module removal position to the measuring module operating position. The measuring unit can then be moved from the first measuring unit position to the second measuring unit position by an external force counter to the spring force of the spring element.Finally, the locking element can be moved into the locking element operating position. In this state, the operating unit can exert a force on the locking element, which causes the measuring unit to be locked in the second measuring unit position and / or to remain in the second measuring unit position even when no external force is acting on the measuring unit. The operating unit can then be moved back and forth between the second operating unit position and the first operating unit position, which, as described above, causes the measuring unit to move back and forth between the second measuring unit position and the first measuring unit position, allowing the measuring module to determine the operating unit position. This increases user-friendliness.

[0017] The measuring module can evaluate the measured control unit position, in particular evaluate it digitally, and use it to control, for example, the function module itself or the devices connected to the function module. Furthermore, the measuring module can output the measured control unit position to a user who can then check the operation of the function module and, if necessary, carry out work steps on the function module or on devices connected to the function module. In particular, the user can use the measured control unit position to identify a switching state of the function module as described above. When the function module is in the switched-off state, the fuse links are de-energized, so that the user can remove the fuse links from the housing, e.g. to maintain or replace them.

[0018] The fuse switch disconnector system according to the invention has the further advantage of comprising two different modules: the functional module and the measuring module. A user can thus also use the functional module without the measuring module. The user can use the measuring module only if, for example, they want to determine the control unit position, and otherwise remove the measuring module, e.g., to save space in a control cabinet. Furthermore, the user can use one measuring module for multiple functional modules by successively determining the control unit position of the multiple functional modules using one and the same measuring module. This reduces the cost of manufacturing measuring modules and improves user-friendliness.

[0019] In a preferred embodiment, the displacement direction is perpendicular or substantially perpendicular to the longitudinal direction of the measuring module. In particular, the displacement direction of the locking element can run parallel to the transverse direction of the measuring module. This enables a compact design of the measuring module, easy mobility of the locking element relative to the locking element, and precise measurement of the operating element position when the locking element is in the locking element operating position.

[0020] In a preferred embodiment, the functional module comprises a functional module side surface that is arranged parallel to the longitudinal direction of the functional module. When the functional module is mounted on the one or more busbars, the functional module side surface can run in particular parallel to the Y-direction and the Z-direction. The measuring module comprises a measuring module side surface that is arranged parallel to the longitudinal direction of the measuring module. When the measuring module is in the measuring module operating position and / or the measuring module removal position, the measuring module side surface rests at least partially against the functional module side surface. In this case, the measuring module side surface can also run parallel to the Y-direction and the Z-direction.This enables a compact and stable fuse switch disconnector system as well as easy mobility of the measuring module relative to the functional module between the measuring module removal state and the measuring module operating state.

[0021] In a preferred embodiment, when the measuring module is in the measuring module operating position and the locking element is in the locking element operating position, the locking element protrudes beyond the measuring module side surface in the direction of the functional module. Furthermore, when the measuring module is in the measuring module operating position and the locking element is in the locking element mounting position, the locking element cannot protrude beyond the measuring module side surface in the direction of the functional module. This enables accurate measurement of the operating element position by the measuring unit when the locking element is in the locking element operating position, as well as easy mobility of the measuring module relative to the functional module between the measuring module removal state and the measuring module operating state when the locking element is in the locking element mounting position.

[0022] In a preferred embodiment, the operating unit comprises a handle element. In particular, when the operating unit is in the first operating unit position, the handle element can extend along or substantially along the longitudinal direction of the functional module. Alternatively or additionally, when the operating unit is in the second operating unit position, the handle element can extend along or substantially along the transverse direction of the functional module. In particular, when the measuring module is in the measuring module operating position and the operating unit is in the second operating unit position, the handle element can extend along or substantially along the displacement direction.The fuse switch disconnector system is configured so that when the measuring module is in the measuring module operating position and the locking element is in the locking element operating position, and the operating unit is latched in the second operating unit position, the locking element contacts or touches the handle element, or is in surface contact with the handle element, or is engaged with the handle element and is biased against the handle element by the spring force of the spring element. Thus, when the operating unit is latched in the second operating unit position, the measuring unit can be prevented from being moved back from the second measuring unit position to the first measuring unit position by the spring force of the spring element. This enables accurate measurement of the operating unit position by the measuring unit.

[0023] In a preferred embodiment, the locking element is configured to lock the locking element in the locking element operating position and / or in the locking element mounting position. This prevents the position of the locking element from being accidentally changed by a small force. This increases the stability, accuracy, and user-friendliness of the fuse switch disconnector system.

[0024] In a preferred embodiment, the locking element comprises a locking element projection. The locking element can comprise an operating position locking tab comprising an operating position locking projection; wherein, when the locking element is arranged in the locking element operating position, the operating position locking projection engages with the locking element projection, thereby locking the locking element in the locking element operating position. Alternatively or additionally, the locking element can comprise an assembly position locking tab comprising an assembly position locking projection; wherein, when the locking element is arranged in the locking element assembly position, the assembly position locking projection engages with the locking element projection, thereby locking the locking element in the locking element assembly position. In particular, the measuring unit can comprise a locking spring element for generating a locking spring force for biasing the locking element against the locking element.When the locking element is arranged in the locking element operating position, the operating position locking projection can be preloaded against the locking element projection by the locking spring force. Alternatively or additionally, when the locking element is arranged in the locking element assembly position, the assembly position locking projection can be preloaded against the locking element projection by the locking spring force. This enables particularly simple and secure locking of the locking element in the locking element operating position and / or in the locking element assembly position and particularly cost-effective production of the measuring unit. In particular, the locking of the locking element in the locking element operating position or the locking element assembly position can be released by elastically deforming the operating position locking tab or the assembly position locking tab.This results in a particularly simple and secure locking of the locking element in the locking element operating position and / or in the locking element mounting position and a particularly cost-effective production of the measuring unit.

[0025] In a preferred embodiment, the operating position locking tab comprises an operating position ramp, which is designed such that when the locking element is moved relative to the locking element from the locking element mounting position to the locking element operating position, the locking element projection is guided along the operating position ramp. This enables particularly stable and easy movement of the locking element from the locking element mounting position to the locking element operating position, thus increasing user-friendliness.

[0026] In a preferred embodiment, the locking element is arranged so as to be movable, preferably linearly movable, relative to the locking element between the locking element mounting position and a locking element removal position along the displacement direction. In the locking element removal position, the locking element and the locking element can in particular be separated or spaced apart from one another. The mounting position locking tab preferably comprises a mounting position run-on slope, which is designed such that, when the locking element is moved relative to the locking element from the locking element removal position to the locking element mounting position, the locking element projection is guided along the mounting position run-on slope. This enables particularly cost-effective and easy mounting of the measuring unit.In particular, the locking element and the locking element can first be manufactured separately, and then the locking element can be moved from the locking element removal position to the locking element mounting position to mount the measuring unit. Furthermore, the locking element can be removed from the locking element, e.g., to service or replace the locking element, without having to replace the entire measuring unit.

[0027] In a preferred embodiment, the functional module comprises one or more functional module screw terminals which are designed such that, when the functional module is mounted on the one or more busbars and the one or more fuse links are inserted into the functional module housing and the operating unit is in the first operating unit position, the one or more functional module screw terminals are in electrical contact with the one or more busbars. Preferably, the functional module comprises one functional module screw terminal for each busbar to which the functional module can be mounted. Thus, when the operating unit is in the first operating unit position (e.g. corresponding to the switched-on state of the functional module), the functional module can draw power from the one or more busbars and supply this via the one or more screw terminals, e.g.to one or more connectable cable branches or output cables. Furthermore, when the control unit is in the second control unit position (e.g., corresponding to the off state of the function module), electrical contact between the one or more function module screw terminals and the one or more busbars may be interrupted. This enables particularly simple and user-friendly control of the power supply via the busbars using the control unit.

[0028] In particular, the one or more functional module screw terminals can be configured for screwing onto one or more output cables, wherein, when the one or more fuse links are inserted into the functional module housing, the one or more fuse links are designed and positioned such that they prevent the one or more functional module screw terminals from being screwed onto the one or more output cables. This ensures that screwing the one or more functional module screw terminals onto the one or more output cables is only possible when the fuse links are removed from the functional module housing and thus the functional module screw terminals are de-energized. This increases safety and user-friendliness.In particular, the one or more installed fuse links can each cover access to a screw of the respective function module screw terminal for the cable outlets, ensuring full contact protection when installed. This cover with the one or more fuse links, which can only be removed when the function module is switched off, ensures, in particular, that the one or more function module screw terminals are only accessible when de-energized.

[0029] In a preferred embodiment, the one or more measuring module mounting elements comprise one or more connection tabs. In particular, each measuring module mounting element can be a connection tab or comprise a respective connection tab. When the measuring module is in the measuring module operating position, the one or more connection tabs are arranged relative to the one or more functional module screw terminals such that the one or more functional module screw terminals can be screwed onto the one or more connection tabs, such that the one or more connection tabs are in electrical contact with the one or more functional module screw terminals. The measuring module further comprises one or more measuring module screw terminals that are in electrical contact with the one or more connection tabs.This allows the measuring module to be mounted to the functional module by screwing the one or more functional module screw terminals to the one or more connection lugs. Thus, the existing functional module screw terminals are used to mount the measuring module to the functional module, and no modifications to the functional module are necessary to mount the measuring module to the functional module. Furthermore, when the measuring module is mounted to the functional module, the current is routed from the busbars via the functional module screw terminals and the connection lugs of the measuring module to the measuring module screw terminals, so that the measuring module screw terminals can be used instead of the functional module screw terminals for screwing to the one or more output cables. Thus, no further modifications to the functional module are necessary to mount the measuring module to the functional module, thus increasing user-friendliness.

[0030] The present invention further relates to a measuring module, preferably for a fuse switch-disconnector system as described above. The measuring module comprises: one or more measuring module mounting elements for mounting the measuring module to a functional module; a measuring module housing; a measuring unit arranged to be movable relative to the measuring module housing between a first measuring unit position and a second measuring unit position, preferably linearly movable and / or movable along or substantially along a longitudinal direction of the measuring module; and a spring element for generating a spring force for biasing the measuring unit toward the first measuring unit position. The measuring unit comprises: a latching element; and a locking element arranged to be movable relative to the latching element between a locking element operating position and a locking element mounting position along a displacement direction, preferably linearly movable.When the locking element is in the locking element mounting position, the measuring module is arranged to be movable relative to the functional module between a measuring module removal position and a measuring module operating position, preferably linearly movable and / or movable along or substantially along a longitudinal direction of the functional module. The measuring module is configured such that, when the measuring module is in the measuring module operating position and the locking element is in the locking element operating position and an operating unit of the functional module is moved, preferably rotated, from a first operating unit position to a second operating unit position, the operating unit exerts a force on the locking element, which causes the measuring unit to be moved from the first measuring unit position to the second measuring unit position against the spring force of the spring element.

[0031] All features described above for the fuse switch disconnector system can be implemented in the measuring module according to the invention. Furthermore, the measuring module according to the invention has the same technical advantages as the fuse switch disconnector system described above. Furthermore, the measuring module according to the invention can be mounted on a conventional fuse switch disconnector as a functional module and is compatible with them, since the measuring module can utilize existing interfaces (in particular, screw terminals) of the conventional fuse switch disconnector.

[0032] These and other features and advantages of the invention will become clear from the accompanying drawings, which show particularly advantageous embodiments. They show: Fig. 1 is a perspective view of a functional module of a fuse switch disconnector system according to an embodiment of the present invention; Fig. 2 is a perspective view of a measuring module according to an embodiment of the present invention; Fig. 3A is a section of the measuring module from Fig. 2 , wherein the locking element is located relative to the locking element in the locking element removal position; Fig. 3B shows a section of the measuring module from Fig. 2 , wherein the locking element is located relative to the locking element in the locking element mounting position; Fig. 3C a section of the measuring module from Fig. 2 , wherein the locking element is in the locking element operating position relative to the locking element; Fig. 3D side view of the locking element from Fig. 2 ; Fig. 4A-4The sequence of assembly steps for mounting the measuring module from Fig. 2 on the functional module Fig. 1 ; in particular shows Fig. 4D Fig. 4E shows the mounted fuse switch-disconnector system when a control unit of the function module is in a second control unit position; and Fig. 4E shows the mounted fuse switch-disconnector system when the control unit of the function module is in a first control unit position.

[0033] Fig. 1 shows a perspective view of a functional module 1 of a fuse switch-disconnector system according to an embodiment of the present invention. The fuse switch-disconnector system is, in particular, designed with three poles. The functional module 1 comprises three functional module mounting elements 10 for mounting the functional module 1 to three busbars, in particular copper busbars, corresponding to the three poles. The functional module 1 comprises a functional module housing 3 for inserting three fuse links 9 into the functional module housing 3 and for removing the three fuse links 9 from the functional module housing 3. The functional module housing 3 comprises a functional module cover unit arranged parallel to the X-direction and the Y-direction.The functional module 1 has a longitudinal direction and a transverse direction, wherein the transverse direction of the functional module 1 runs parallel to the X-direction and the longitudinal direction of the functional module 1 runs parallel to the Y-direction.

[0034] The functional module 1 further comprises an operating unit 5, which is arranged to be rotatable relative to the functional module housing 3 between a first operating unit position and a second operating unit position, wherein the operating unit 5 can be locked in the first operating unit position and in the second operating unit position. Fig. 1 The control unit 5 is in the second control unit position. The control unit 5 is arranged on the function module cover unit. The control unit 5 is arranged so as to be rotatable in the Z direction. In this embodiment, the control unit 5 is a rotary knob. The first control unit position and the second control unit position each correspond to a first switching state and a second switching state of the function module. The first switching state is a switched-on state or operating state of the function module 1, in which the fuse links 9 are energized, which is drawn from the busbars. The second switching state is a switched-off state or maintenance state of the function module 1, in which the fuse links 9 are de-energized. In the switched-off state, the fuse links 9 can, in particular, be removed from the housing for maintenance or replacement. The control unit 5 further comprises a handle element 51.When the control unit 5 is in the first control unit position, the handle element 51 extends along the Y direction. When the control unit 5 is in the second control unit position (as shown in . Fig. 1 shown), the handle element 51 extends along the X-direction.

[0035] The functional module 1 further comprises three functional module screw terminals 12, which are configured such that, when the functional module 1 is mounted on the three busbars and the three fuse links 9 are inserted into the functional module housing 3, and the control unit 5 is in the first control unit position, the three functional module screw terminals 12 are in electrical contact with the three busbars. Thus, when the control unit 5 is in the first control unit position (corresponding to the power-on state of the functional module 1), the functional module 1 can draw power from the three busbars and transmit it via the three functional module screw terminals 12 to three connectable cable branches or output cables.Furthermore, when the control unit 5 is in the second control unit position (corresponding to the off state of the function module 1), the electrical contact between the three function module screw terminals 12 and the three busbars is interrupted. The function module 1 further comprises a function module side surface 11 arranged parallel to the Y-direction and the Z-direction.

[0036] Fig. 2 shows a perspective view of a measuring module 2 of a fuse switch-disconnector system according to an embodiment of the present invention or of a measuring module 2 according to an embodiment of the present invention. The measuring module 2 comprises three measuring module mounting elements 22, in particular three connection lugs 22, for mounting the measuring module 2 on the functional module 1. The measuring module 2 further comprises a measuring module housing 4. The measuring module 2 further comprises a measuring unit 6, which is arranged to be linearly movable relative to the measuring module housing 4 between a first measuring unit position and a second measuring unit position along a longitudinal direction of the measuring module 2. When the functional module 1 is mounted on the one or more busbars and when the measuring module 2 is mounted on the functional module 1 or is in the measuring module operating position relative to the functional module 1 (as in Fig. 4B bis 4E shown), the longitudinal direction of the measuring module 2 runs parallel to the Y-direction. In Fig. 2 The measuring unit is arranged in the second measuring unit position. The measuring module 2 further comprises a spring element (not shown) for generating a spring force for biasing the measuring unit 6 toward the first measuring unit position.

[0037] The measuring unit 6 comprises a locking element 7 and a locking element 8. The locking element 8 is arranged to be linearly movable relative to the locking element 7 between a locking element operating position and a locking element mounting position along a displacement direction. Furthermore, the locking element 8 is arranged to be linearly movable relative to the locking element 7 between the locking element mounting position and a locking element removal position along the displacement direction. The displacement direction runs parallel to a transverse direction of the measuring module 2 and perpendicular to the longitudinal direction of the measuring module 2. When the functional module 1 is mounted on the one or more busbars and when the measuring module 2 is in the measuring module operating position relative to the functional module 1 (as in Fig. 4B bis 4E shown), the transverse direction of the measuring module 2 is parallel to the X-direction. In Fig. 2 The locking element 8 is arranged in the locking element operating position. The locking element 7 is configured to lock the locking element 8 in the locking element operating position and in the locking element mounting position.

[0038] When the measuring module 2 is in the measuring module operating position (as shown in Fig. 4B bis 4E shown), the three connection lugs 22 are arranged relative to the three function module screw terminals 12 such that the three function module screw terminals 12 can be screwed onto the three connection lugs 22, so that the three connection lugs 22 are in electrical contact with the three function module screw terminals 12. The measuring module 2 further comprises three measuring module screw terminals 23, which are in electrical contact with the three connection lugs 22. This enables the measuring module 2 to be mounted on the function module 1 by screwing the three function module screw terminals 12 onto the three connection lugs 22.Furthermore, when the measuring module 2 is mounted on the functional module 1, the current is conducted from the busbars via the functional module screw terminals 12 and the connection lugs 22 of the measuring module 2 to the measuring module screw terminals 23, so that the measuring module screw terminals 23 can be used instead of the functional module screw terminals 12 for screwing to the three output cables. The measuring module 2 further comprises a measuring module side surface 21 arranged parallel to the Y direction and the Z direction. When the measuring module 2 is in the measuring module operating position and / or the measuring module removal position, the measuring module side surface 21 rests against the functional module side surface 11, as shown in FIG. Fig. 4A bis 4E can be seen.

[0039] Fig. 3A shows a section of the measuring module from Fig. 2 , wherein the locking element 8 is located in the locking element removal position relative to the locking element 7. In the locking element removal position, the locking element 8 and the locking element 7 are separated and spaced apart from each other. Fig. 3B shows a section of the measuring module from Fig. 2 , wherein the locking element 8 is located in the locking element mounting position relative to the locking element 7. When the measuring module 2 is in the measuring module removal position or the measuring module operating position and the locking element 8 is in the locking element mounting position, the locking element 8 does not protrude beyond the measuring module side surface 21 in the direction of the functional module 1 (see Fig. 3B and Fig. 4A-C ) Fig. 3C shows a section of the measuring module from Fig. 2 , wherein the locking element 8 is in the locking element operating position relative to the locking element 7. When the measuring module 2 is in the measuring module operating position and the locking element 8 is in the locking element operating position, the locking element 8 protrudes beyond the measuring module side surface 21 in the direction of the functional module 1 (see Fig. 3C and Fig. 4D-E ). Fig. 3D shows a side view of the locking element 8 from Fig. 2 .

[0040] The locking element 7 comprises a locking element projection 71. The locking element 8 comprises an operating position locking tab 81 which comprises an operating position locking projection 811. When the locking element 8 is arranged in the locking element operating position (as in Fig. 3C shown), the operating position locking projection 811 engages with the locking element projection 71, and thereby the locking element 8 is locked in the locking element operating position. Furthermore, the locking element 8 comprises a mounting position locking tab 82, which comprises a mounting position locking projection 821. When the locking element 8 is arranged in the locking element mounting position (as shown in Fig. 3B shown), the mounting position locking projection 821 engages with the locking element projection 71, and thereby the locking element 8 is locked in the locking element mounting position. The operating position locking tab 81 further comprises an operating position run-on bevel 812, which is designed such that, when the locking element 8 is moved relative to the locking element 7 from the locking element mounting position to the locking element operating position, the locking element projection 71 is guided along the operating position run-on bevel 812. The mounting position locking tab 82 further comprises a mounting position run-on bevel 822, which is designed such that, when the locking element 8 is moved relative to the locking element 7 from the locking element removal position to the locking element mounting position, the locking element projection 71 is guided along the mounting position run-on bevel 822.

[0041] Fig. 4A bis 4D show a sequence of assembly steps for assembling the measuring module 2 from Fig. 2 on the functional module 1 Fig. 1 ; in particular shows Fig. 4D the mounted fuse switch-disconnector system when the control unit 5 of the function module 1 is in the second control unit position. Fig. 4E shows the mounted fuse switch disconnector system when the control unit 5 is in the first control unit position.

[0042] To mount the measuring module 2 on the functional module 1, the operating unit 5 is first locked in the second operating unit position, the locking element 8 is moved into the locking element mounting position and the measuring module 2 is arranged relative to the functional module 1 in the measuring module removal position; the measuring unit 6 is pre-tensioned by the spring force of the spring element in the first measuring unit position ( Fig. 4A ). Then, the measuring module 2 is moved from the measuring module removal position to the measuring module operating position ( Fig. 4B ). In particular, the connection lugs 22 of the measuring module 2 can be threaded into the function module screw terminals 12 and then moved into their final position. The movement can take place parallel to the two long sides of the function module 1 and the measuring module 2. The fuse switch disconnector system can in particular be configured such that in order to mount the measuring module 2 on the function module 1, the operating unit 5 must be in the second operating unit position (corresponding to the switched-off state of the function module 1), since otherwise the fuse inserts 9 cannot be removed from the function module housing 3 and therefore the screws of the function module screw terminals 12 are covered by the fuse inserts 9 and cannot be tightened, thus preventing a mechanical connection to the measuring module 2 from being established.

[0043] Subsequently, the measuring unit 6 is moved from the first measuring unit position to the second measuring unit position by the action of an external force against the spring force of the spring element ( Fig. 4C ). Finally, while the measuring unit 6 is in the second measuring unit position, the locking element 8 is moved into the locking element operating position ( Fig. 4D ). In this state, in particular, the locking element 8 and the gripping element 51 are engaged, and the locking element 8 is preloaded against the gripping element 51 by the spring force of the spring element. Since the operating unit 5 is locked in the second operating unit position (and the spring force of the spring element is smaller than the second minimum force that would be required to move the operating unit 5 away from the second operating unit position), the measuring unit 6 is thus prevented from being moved back from the second measuring unit position to the first measuring unit position by the spring force of the spring element.

[0044] After mounting the fuse switch-disconnector system, the control unit 5 can be switched between the second control unit position ( Fig. 4D ) and the first control unit position ( Fig. 4E ) back and forth, causing, as described above, the measuring unit 6 to move between the second measuring unit position ( Fig. 4D ) and the first measuring unit position ( Fig. 4E ) is moved back and forth and the measuring module 2 can thus determine the control unit position. In particular, the fuse switch disconnector system is configured such that when the measuring module 2 is in the measuring module operating position and the locking element 8 is in the locking element operating position and the control unit 5 is moved from the first control unit position ( Fig. 4E ) to the second control unit position ( Fig. 4D ), the operating unit 5 exerts a force on the locking element 8, which causes the measuring unit 6 to move against the spring force of the spring element from the first measuring unit position ( Fig. 4E ) to the second measuring unit position ( Fig. 4D ) is moved. Liste der Bezugszeichen

[0045] 1 Function module 10 Function module mounting element 11 Function module side surface 12 Function module screw terminal 2 Measuring module 21 Measuring module side surface 22 Measuring module mounting element, connection lug 23 Measuring module screw terminal 3 Function module housing 4 Measuring module housing 5 Operating unit 51 Handle element 6 Measuring unit 7 Latching element 71 Latching element projection 8 Locking element 81 Operating position latching lug 811 Operating position latching projection 812 Operating position ramp 82 Mounting position latching lug 821 Mounting position latching projection 822 Mounting position ramp 9 Fuse link

Claims

1. A modular fuse switch-disconnector system comprising a functional module (1) and a measuring module (2); wherein the functional module (1) comprises: - one or more functional module mounting elements (10) for mounting the functional module (1) to one or more busbars; - a functional module housing (3) for inserting one or more fuse links (9) into the functional module housing (3) and for removing the one or more fuse links (9) from the functional module housing (3); and - an operating unit (5) which is arranged so as to be movable, preferably rotatable, relative to the functional module housing (3) between a first operating unit position and a second operating unit position, wherein the operating unit (5) can be locked in the first operating unit position and in the second operating unit position, respectively; wherein the measuring module (2) comprises: - one or more measuring module mounting elements (22) for mounting the measuring module (2) on the functional module (1);- a measuring module housing (4); - a measuring unit (6) that is arranged to be movable relative to the measuring module housing (4) between a first measuring unit position and a second measuring unit position, preferably movable along a longitudinal direction of the measuring module (2); and - a spring element for generating a spring force for biasing the measuring unit (6) toward the first measuring unit position; wherein the measuring unit (6) comprises: - a locking element (7); and - a locking element (8) that is arranged to be movable relative to the locking element (7) between a locking element operating position and a locking element mounting position along a displacement direction; wherein, when the locking element (8) is in the locking element mounting position, the measuring module (2) is arranged to be movable relative to the functional module (1) between a measuring module removal position and a measuring module operating position, preferably movable along a longitudinal direction of the functional module (1);and wherein the fuse switch-disconnector system is configured such that, when the measuring module (2) is in the measuring module operating position and the locking element (8) is in the locking element operating position and the operating unit (5) is moved from the first operating unit position to the second operating unit position, the operating unit (5) exerts a force on the locking element (8) which causes the measuring unit (6) to be moved from the first measuring unit position to the second measuring unit position against the spring force of the spring element.; 2. Fuse switch disconnector system according to claim 1, wherein the displacement direction is perpendicular to the longitudinal direction of the measuring module (2).

3. Fuse switch-disconnector system according to claim 1 or 2, wherein the functional module (1) comprises a functional module side surface (11) arranged parallel to the longitudinal direction of the functional module (1); wherein the measuring module (2) comprises a measuring module side surface (21) arranged parallel to the longitudinal direction of the measuring module (2); and wherein, when the measuring module (2) is in the measuring module operating position, the measuring module side surface (21) bears at least partially against the functional module side surface (11).

4. Fuse switch disconnector system according to one of the preceding claims, wherein, when the measuring module (2) is in the measuring module operating position and the locking element (8) is in the locking element operating position, the locking element (8) projects beyond the measuring module side surface (21) in the direction of the functional module (1).

5. Fuse switch disconnector system according to one of the preceding claims, wherein the operating unit (5) comprises a handle element (51); and wherein the fuse switch disconnector system is configured such that, when the measuring module (2) is in the measuring module operating position and the locking element (8) is in the locking element operating position and the operating unit (5) is locked in the second operating unit position, the locking element (8) is in engagement with the handle element (51) and is preloaded against the handle element (51) by the spring force of the spring element.

6. Fuse switch disconnector system according to claim 5, wherein, when the operating unit (5) is in the first operating unit position, the handle element (51) extends along the longitudinal direction of the functional module (1), and / or wherein, when the measuring module (2) is in the measuring module operating position and the operating unit (5) is in the second operating unit position, the handle element (51) extends along the displacement direction.

7. Fuse switch disconnector system according to one of the preceding claims, wherein, when the measuring module (2) is in the measuring module operating position, the spring force of the spring element points in a direction that is opposite to a direction of movement of the measuring module (2) from the measuring module removal position to the measuring module operating position.

8. Fuse switch disconnector system according to one of the preceding claims, wherein the latching element (7) is configured to latch the locking element (8) in the locking element operating position and / or in the locking element mounting position.

9. Fuse switch disconnector system according to claim 8, wherein the latching element (7) comprises a latching element projection (71); and i) wherein the locking element (8) comprises an operating position latching tab (81) comprising an operating position latching projection (811); wherein, when the locking element (8) is arranged in the locking element operating position, the operating position latching projection (811) engages with the latching element projection (71) and thereby latches the locking element (8) in the locking element operating position, and / or ii) wherein the locking element (8) comprises a mounting position latching tab (82) comprising a mounting position latching projection (821); wherein, when the locking element (8) is arranged in the locking element mounting position, the mounting position locking projection (821) engages with the locking element projection (71) and thereby the locking element (8) is locked in the locking element mounting position.

10. Fuse switch disconnector system according to claim 9, wherein the measuring unit (6) comprises a detent spring element for generating a detent spring force for prestressing the locking element (8) against the detent element (7); and i) wherein, when the locking element (8) is arranged in the locking element operating position, the operating position detent projection (811) is prestressed against the detent element projection (71) by the detent spring force, and / or ii) wherein, when the locking element (8) is arranged in the locking element mounting position, the mounting position detent projection (821) is prestressed against the detent element projection (71) by the detent spring force.

11. Fuse switch disconnector system according to claim 9 or 10, wherein the operating position locking tab (81) comprises an operating position run-on bevel (812) which is designed such that when the locking element (8) is moved relative to the locking element (7) from the locking element mounting position to the locking element operating position, the locking element projection (71) is guided along the operating position run-on bevel (812).

12. Fuse switch disconnector system according to one of the preceding claims, wherein the locking element (8) is arranged to be movable relative to the latching element (7) between the locking element mounting position and a locking element removal position along the displacement direction, wherein the mounting position latching tab (82) preferably comprises a mounting position run-on slope (822) which is designed such that when the locking element (8) is moved relative to the latching element (7) from the locking element removal position to the locking element mounting position, the latching element projection (71) is guided along the mounting position run-on slope (822).

13. Fuse switch disconnector system according to one of the preceding claims, wherein the functional module (1) comprises one or more functional module screw terminals (12) which are designed such that when the functional module (1) is mounted on the one or more busbars and the one or more fuse links (9) are inserted into the functional module housing (3) and the operating unit (5) is in the first operating unit position, the one or more functional module screw terminals (12) are in electrical contact with the one or more busbars.

14. The fuse switch disconnector system according to claim 13, wherein the one or more measuring module mounting elements (22) comprise one or more connection lugs (22); wherein, when the measuring module (2) is in the measuring module operating position, the one or more connection lugs (22) are arranged relative to the one or more functional module screw terminals (12) such that the one or more functional module screw terminals (12) can be screwed onto the one or more connection lugs (22) such that the one or more connection lugs (22) are in electrical contact with the one or more functional module screw terminals (12); and wherein the measuring module (2) comprises one or more measuring module screw terminals (23) which are in electrical contact with the one or more connection lugs (22).

15. A measuring module (2), preferably for a fuse switch-disconnector system according to one of the preceding claims, wherein the measuring module (2) comprises: - one or more measuring module mounting elements (22) for mounting the measuring module (2) on a functional module (1); - a measuring module housing (4); - a measuring unit (6) arranged to be movable relative to the measuring module housing (4) between a first measuring unit position and a second measuring unit position, preferably movable along a longitudinal direction of the measuring module (2); and - a spring element for generating a spring force for biasing the measuring unit (6) toward the first measuring unit position; wherein the measuring unit (6) comprises: - a latching element (7); and - a locking element (8) arranged to be movable relative to the latching element (7) between a locking element operating position and a locking element mounting position along a displacement direction;wherein, when the locking element (8) is in the locking element mounting position, the measuring module (2) is arranged to be movable relative to the functional module (1) between a measuring module removal position and a measuring module operating position, preferably movable along a longitudinal direction of the functional module (1); and wherein the measuring module (2) is configured such that, when the measuring module (2) is in the measuring module operating position and the locking element (8) is in the locking element operating position and an operating unit (5) of the functional module (1) is moved from a first operating unit position to a second operating unit position, the operating unit (5) exerts a force on the locking element (8) which causes the measuring unit (6) to be moved from the first measuring unit position to the second measuring unit position against the spring force of the spring element.

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