EP4131297B1 - Tiroir-transformateur sommateur de courant, disjoncteur-détecteur de fuites à la terre et procédé de montage - Google Patents

Tiroir-transformateur sommateur de courant, disjoncteur-détecteur de fuites à la terre et procédé de montage

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Publication number
EP4131297B1
EP4131297B1 EP22185636.2A EP22185636A EP4131297B1 EP 4131297 B1 EP4131297 B1 EP 4131297B1 EP 22185636 A EP22185636 A EP 22185636A EP 4131297 B1 EP4131297 B1 EP 4131297B1
Authority
EP
European Patent Office
Prior art keywords
slide
module
current transformer
summation current
summation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22185636.2A
Other languages
German (de)
English (en)
Other versions
EP4131297A1 (fr
Inventor
Andreas Mundt
Tobias Keimel
Ye Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP4131297A1 publication Critical patent/EP4131297A1/fr
Application granted granted Critical
Publication of EP4131297B1 publication Critical patent/EP4131297B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • 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
    • H01F2038/305—Constructions with toroidal magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection

Definitions

  • the invention relates to a withdrawable summation current transformer for a residual current device consisting of multiple modules, for example, an RCBO or FI/LS. Furthermore, the invention relates to a modular residual current device with such a withdrawable summation current transformer and an assembly method for such a residual current device.
  • Electromechanical protective devices – such as circuit breakers, miniature circuit breakers, residual current devices, and arc or fire protection switches – are used to monitor and protect electrical circuits and are used primarily as switching and safety elements in electrical power supply and distribution networks.
  • the protective device is electrically connected to an electrical line of the circuit to be monitored via two or more connection terminals in order to interrupt the electrical current in the respective monitored line if necessary.
  • the protective device has at least one switching contact, which can be opened when a predefined condition occurs – for example, when a short circuit or fault current is detected – to disconnect the monitored circuit from the electrical network.
  • Such protective devices are also known as modular devices in the field of low-voltage technology.
  • Circuit breakers are specifically designed for high currents.
  • a miniature circuit breaker also known as a miniature circuit breaker, is a so-called overcurrent protection device in electrical installations and is used particularly in the field of of low-voltage networks.
  • Circuit breakers and miniature circuit breakers guarantee safe shutdown in the event of a short circuit and protect consumers and systems from overload, for example, from damage to electrical cables due to excessive heating as a result of excessive electrical current. They are designed to automatically switch off a monitored circuit in the event of a short circuit or overload, thus isolating it from the rest of the power grid. Circuit breakers and miniature circuit breakers are therefore used primarily as switching and safety elements for monitoring and protecting an electrical circuit in electrical power supply networks.
  • Miniature circuit breakers are known from the publications DE 10 2015 217 704 A1 , EP 2 980 822 A1 , DE 10 2015 213 375 A1 , DE 10 2013 211 539 A1 or EP 2 685 482 B1 basically known in advance.
  • a single-pole circuit breaker To interrupt a single phase line, a single-pole circuit breaker is generally used, which typically has a width of one modular spacing (approximately 18 mm). For three-phase connections, three-pole circuit breakers are used (as an alternative to three single-pole switching devices), which accordingly have a width of three modular spacings (approximately 54 mm). Each of the three phase conductors is assigned a pole, i.e., a switching point. If the neutral conductor is to be interrupted in addition to the three phase conductors, the devices are referred to as four-pole devices, which have four switching points: three for the three phase conductors and one for the shared neutral conductor.
  • compact circuit breakers which, with a housing width of only one module, provide two switching contacts for each connecting cable, i.e. either for two phase cables (compact circuit breakers of type 1+1) or for one phase cable and the neutral conductor (compact circuit breakers of type 1+N).
  • Such compact protective switching devices in slim design are known, for example, from the publications DE 10 2004 034 859 A1 , EP 1 191 562 B1 or EP 1 473 750 A1 basically known in advance.
  • a residual current device is a protective device designed to ensure protection against dangerous fault currents in an electrical system.
  • a residual current also known as a differential current—occurs when a live wire makes electrical contact with ground. This occurs, for example, when a person touches a live part of an electrical system: in this case, the current flows as a residual current through the person's body and toward ground.
  • the residual current device must quickly and safely disconnect all poles of the electrical system from the power supply when such a residual current occurs.
  • RCD residual current device
  • FI switch FI circuit breaker
  • DI switch FI switch
  • RVD Residual Current Protective Device
  • mains voltage-dependent and mains voltage-independent residual current circuit breakers have control electronics with a release that relies on an auxiliary or mains voltage to fulfil their function
  • mains voltage-independent residual current circuit breakers do not require an auxiliary or mains voltage to implement the release function, but usually have a somewhat larger summation current transformer to implement the mains voltage-independent release, which can generate a larger induction current in the secondary winding.
  • the magnitude of the current in a line leading to an electrical load is compared with the magnitude of the current in a line returning from the electrical load, for example a neutral conductor, using a so-called summation current transformer.
  • This has an annular magnetic core through which the primary conductors (outgoing and returning electrical lines) are passed.
  • the magnetic core itself is wound with a secondary conductor or secondary winding.
  • the sum of the electrical currents flowing to the load is equal to the sum of the electrical currents flowing back from the load. If the currents are added vectorially, i.e.
  • the signed sum of the electrical currents in the outgoing and return lines in the fault-current-free state is zero: no induced current is induced in the secondary conductor.
  • the sum of the forward and return electrical currents recorded in the summation current transformer is not equal to zero.
  • the resulting current difference induces a voltage proportional to the current difference in the secondary winding, causing a secondary current to flow in the secondary winding.
  • This secondary current serves as a fault current signal and, once a predetermined value is exceeded, triggers the protective switching device and, as a result, opens at least one switching contact of the protective switching device, disconnects the correspondingly protected circuit.
  • a mains voltage independent residual current circuit breaker in a narrow design, ie with a width of only one module, is known for example from the published patent application DE ⁇ 10 2018 202 204 A1
  • the residual current circuit breaker has two current path sections, which are arranged side by side in a common insulating housing. During assembly, a pre-assembled summation current transformer assembly is inserted into a middle section of the insulating housing via one of the wide sides, with the installation space required for the summation current transformer located in both the first and second current path sections.
  • a residual current transformer for a residual current circuit breaker is disclosed, the housing of which consists of two half-shells, to each of which two break-out clips are formed, which, when not broken out, enable a snap-on connection of the two half-shells and can be broken out after the assembly of the primary conductors in order to achieve the most compact design possible.
  • the withdrawable summation current transformer according to the invention for a residual current device formed from several structurally stable individual modules has a magnetic core accommodated and held in a housing, through the opening of which at least two rigid primary conductors are passed.
  • Each of the primary conductors has a first end and a second end for contacting a connection element of the module uniquely assigned to the respective primary conductor.
  • the withdrawable summation current transformer has at least one guide contour which enables a guided insertion of the withdrawable summation current transformer along an insertion direction into a laterally open installation space extending over the several modules of the residual current device, wherein the ends of the primary conductors are The insert assumes a predefined position in relation to the connection elements assigned to it.
  • the use of the withdrawable summation current transformer according to the invention has the advantage that the rigid primary conductors are routed through the magnetic core before the summation current transformer is installed in the residual current device – and thus outside the residual current device housing.
  • the magnetic core can be tubular or ring-shaped. If it is wound from strip material, it is referred to as a toroidal core. Furthermore, the magnetic core can be housed and held in its own protective sheath.
  • the term "rigid” refers to the primary conductors having inherent stability, allowing them to retain their shape.
  • the first and second ends of the primary conductors which are contacted with a respective connection element of the residual current device in a later assembly step, each have a predefined position—adjacent to the respective connection element—after the withdrawable summation current transformer has been installed, i.e., after the withdrawable summation current transformer has been inserted into the designated installation space of the residual current device.
  • the number of primary conductors to be passed through the magnetic core corresponds to the number of individual modules of the residual current device, with each module of the residual current device being uniquely assigned to one of the primary conductors: for a two-pole residual current device consisting of two modules, two primary conductors are required – one for contacting a neutral conductor, another for contacting a phase conductor. For a three-pole residual current device consisting of three modules, three primary conductors are required – one for contacting the neutral conductor, two for contacting a phase conductor each. - must be provided. In a four-pole residual current device consisting of four modules, there are four primary conductors: one for contacting the neutral conductor, and three more for contacting a phase conductor each.
  • the guide contours are formed on the housing of the withdrawable summation current transformer and serve to facilitate the insertion of the withdrawable summation current transformer in a insertion direction into a laterally open installation space extending across the multiple modules of the residual current circuit breaker. In particular, they serve to prevent the first and second ends of the primary conductors from colliding with the connection elements of the residual current circuit breaker that protrude into the installation space during insertion in the insertion direction.
  • the guide contours can, for example, be webs, lugs, or stop surfaces formed on the housing, which enable a predefined spatial positioning of the withdrawable summation current transformer during the insertion movement.
  • each primary conductor is routed through the opening of the magnetic core at least twice. This means that each primary conductor must be returned at least once on the outside of the withdrawable summation current transformer. The resulting higher number of turns in the primary conductors allows for a higher secondary current on the secondary side of the withdrawable summation current transformer.
  • each primary conductor is oriented opposite to each other transversely to the insertion direction. Due to the opposite orientation of the first and second ends of each primary conductor, a certain distance between the primary conductor ends can be achieved, so that contact errors—touching, incorrect contacts, etc.—can be effectively avoided.
  • Each primary conductor is uniquely assigned to a module of the residual current device. The two ends of a primary conductor are thus "at the same height" in the insertion direction, so that after insertion, they are positioned within the assigned module and adjacent to their respective connection element.
  • the first ends of the primary conductors are arranged one behind the other in the insertion direction.
  • the second ends of the primary conductors are also arranged one behind the other in the insertion direction.
  • the housing has several guide ribs on its exterior for guiding the primary conductors. These guide ribs hold the primary conductors in a predefined position while winding the magnetic core. This allows the external dimensions of the withdrawable summation current transformer to be reliably maintained, which is advantageous given the limited space within the installation compartment, as it ensures that the maximum available installation space is not exceeded.
  • the ends of the primary conductors are arranged at a distance from the housing downwards, i.e., from the front side to the mounting side. This ensures better accessibility to the primary conductor ends, which is particularly advantageous for the subsequent joining process (welding, soldering). This also minimizes the energy input when joining the primary conductor ends, thus the risk of damage to the withdrawable summation current transformer - especially the magnetic core - can be reduced.
  • the withdrawable summation current transformer has a cuboid-shaped outer contour. This allows for a compact design, with the cuboid-shaped outer contour corresponding to the essentially cuboid-shaped installation space of the residual current device.
  • the modular residual current device comprises a first module designed as an MCB module, in which a current path for contacting a phase conductor is arranged, which has a switching contact and a switching mechanism with a magnetic and a thermal tripping system for interrupting the switching contact. Furthermore, the residual current device comprises a second module designed as an RCD module, in which a current path for contacting a neutral conductor is arranged. Both modules each comprise an insulating housing with a front side, a fastening side arranged opposite the front side, and narrow and wide sides connecting the front and fastening sides, and are arranged side by side.
  • the insulating housings each comprise a plug-in opening extending from one wide side to the other, whereby, when the MCB module is combined with the RCD module, a cross-module installation space is formed, in which a cross-module plug-in summation current transformer of the type described above is accommodated and held.
  • the residual current device according to the invention is a combined device design in which the functionality of a pure residual current device is combined with the functionality of a circuit breaker: in German, such combined protective devices are called FI/LS (residual current/line protection), in English-speaking countries the term RCBO (for Residual current operated Circuit-Breaker with Overcurrent protection) is used.
  • FI/LS residual current/line protection
  • RCBO Residual current operated Circuit-Breaker with Overcurrent protection
  • module refers to the fact that the residual current device is constructed from two individual modules – an MCB module and an RCD module. Both modules are structurally stable, enclosed modules, each with its own insulating housing and a plug-in opening. After the two modules are mounted side by side, they form a cross-module installation space for accommodating and mounting the plug-in summation current transformer. Internally, each module has a primary conductor current path – for the neutral conductor in the case of the RCD module, and for a phase conductor in the case of the MCB module.
  • each module – a switching contact, switching and tripping mechanism (for short circuits and thermal overloads in the MCB module, for residual currents in the case of residual currents), arc quenching equipment, etc. – are also arranged, i.e., housed and supported, within the respective module.
  • the installation space is arranged off-center between the two narrow sides, i.e. shifted towards one of the two narrow sides, and is accessible from the outside via the two wide sides of each module.
  • the two outer wide sides can be closed using suitable closure elements such as covers or flaps.
  • the off-center arrangement has the advantage that in this area of the modules forming the residual current device, free installation space is available, which can be used for the installation of a large-volume assembly such as the withdrawable summation current transformer.
  • the modules - and thus the residual current device - can be kept compact, so that each Each module has a width of only one pitch unit, which corresponds to approximately 18 mm.
  • the residual current circuit breaker accordingly has a width of one pitch unit per module—i.e., two pitch units for a two-pole device consisting of two modules.
  • the modular residual current device has at least one additional module, which is designed as an MCB module and arranged next to the first module.
  • additional MCB modules three-pole (one additional MCB module) or four-pole (two additional MCB modules) residual current devices or RCBOs can be easily implemented.
  • the individual modules are arranged side by side and fastened to one another using suitable connecting elements - for example, clamps, rivets, or snap connections.
  • the assembly process has the additional step b1) Moving the withdrawable summation current transformer in an engagement direction oriented transversely to the insertion direction (R2),
  • the additional step b1) is performed before the "production of joint connections.” In this way, the ends of the primary conductors are brought into close proximity with the respective connection element only after the summation current transformer has been inserted into the installation space, so that they can then be easily connected. This reliably prevents collisions during insertion.
  • step c) "Creating joints" is carried out thermally by soldering or welding. With the help of these thermal joining processes, soldering and welding, a solid, sometimes also highly heat-resistant, and secure joint can be created. between the primary conductor ends and the respective connection element assigned to them.
  • the basic structure of the modular residual current device 1 according to the invention is shown schematically in two different views.
  • the four-pole residual current device 1, designed as a residual current device (RCD) or RCBO, is composed of four individual modules, an RCD module 2 (shown on the right in Figure 1a) and three MCB modules 3, each of which has an independent, structurally stable insulating housing 10.
  • the insulating housings 10 are each designed in a narrow design and have a width B of one pitch unit (1TE, corresponding to approximately 18mm).
  • the outer dimensions defining the envelope surfaces are formed by a front side 11, a fastening side 12 arranged opposite the front side 11, and narrow sides 13 and wide sides 14 connecting the front and fastening sides 11, 12.
  • screw terminals 19 for contacting mains-side or load-side connecting conductors are accommodated and held in the respective insulating housing 10 of the respective module.
  • each of the modules 2, 3 has an actuating element 23 arranged in the area of its front side 11. Joint actuation of the individual actuating elements 23 is realized by means of a connecting element 24 coupling the individual actuating elements 23.
  • narrow-profile insulating housings 10 comprise two half-shells, which are joined together at the end of the assembly of the low-voltage protective device 1 using suitable fasteners, such as rivets or snap-in connections, to form a circumferential joint line.
  • Each half-shell includes one of the wide sides 14 as well as parts (in whole or in full) of the front, mounting, and narrow sides 11, 12, and 13.
  • a plug-in opening is formed, which extends orthogonally to the broad sides 14 from one broad side 14 to the other, thereby forming an installation space 16.
  • Electrical connection elements 26 of the respective module 2, 3 protrude laterally into the installation space 16.
  • the installation space 16 is positioned off-center, i.e., shifted toward one of the narrow sides 13, in the insulating housing 10 and is accessible via each of the two wide sides 14.
  • the insertion openings can be closed by means of suitable closure elements, for example a cover 25.
  • FIG 3 A first embodiment of the plug-in summation current transformer 100 according to the invention is shown schematically in a perspective view.
  • This has a ring-shaped or tubular magnetic core 102, which is accommodated and held in a housing 101 of the plug-in summation current transformer 100. Since this is a summation current transformer for the Figures 1 and 2
  • four primary conductors 110, 120, 130, 140 are passed through the opening of the magnetic core.
  • Each of the primary conductors 110, 120, 130, 140 has a first end 111, 121, 131, 141 and a second end 112, 122, 132, 142.
  • each primary conductor 110, 120, 130, 140 are oriented opposite to each other transversely to an insertion direction R1, ie the ends each point outwards transversely to the insertion direction, wherein the first ends 111, 121, 131, 141 and the second ends 112, 122, 132, 142 each form a row extending in the insertion direction.
  • the withdrawable summation current transformer 100 has guide contours 108 which, when the withdrawable summation current transformer 100 is inserted into the installation space 16, engage on corresponding contact surfaces 17 formed there (see Figures 4 and 5 ).
  • each of the primary conductors 110, 120, 130, 140 is passed twice through the magnetic core 102 – and correspondingly returned to the outside of the housing 101.
  • the withdrawable summation current transformer 100 has several guide webs 109 through which the primary conductors 110, 120, 130, 140 are guided at a distance from one another.
  • Figures 4 and 5 is the one from the Figures 1 and 2 known residual current circuit breaker 1 with the mounted therein, made of Figure 3 known withdrawable summation current transformer 100 is shown schematically in two side views, which show different assembly states.
  • Figure 4 shows the residual current device 1 with the withdrawable summation current transformer 100 inserted into the installation space 16 immediately at the end of the insertion movement in the insertion direction R1.
  • the withdrawable summation current transformer 100 is in a second direction, the engagement direction R2, which is from the fastening side 12 is oriented towards the front side 11 - and thus transversely to the insertion direction R1 - so that the first and second ends 111, 112, 121, 122, 131, 132, 141, 142 of the primary conductors 110, 120, 130, 140 are located directly in the region of the connection element 26 assigned to them.
  • connection elements 26 have U-shaped receptacles for the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142, which serve to mechanically secure the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142: if the first and second ends 111, 112, 121, 122, 131, 132, 141, 142 of the primary conductors 110, 120, 130, 140 are located directly in the region of the U-shaped receptacle of the connection element 26 assigned to them in each case, the U-shaped receptacles can be pressed together by means of a tool suitable for this purpose, whereby a mechanically stable connection is initially realized between the respective primary conductor end and the connection element 26 assigned to it. In order to achieve a good electrical conductivity, this connection can then be thermally joined, for example by soldering, brazing or welding.
  • the insulating housings 10 of the individual modules 2, 3 have closable mounting openings (not shown) on their mounting side 12, which allow access to the installation space and are located directly below the connection elements 26. In this way, the mechanical and/or thermal joining connection can be carried out from the mounting side 12 using standard tools.
  • the primary conductors 110, 120, 130, 140 are initially guided downwards centrally below the housing 101 of the withdrawable summation current transformer 100, before the first and second ends 111, 112, 121, 122, 131, 132, 141, 142 are angled outwards. In this way, a free space defined by the distance is created between the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142 and the housing 101, into which the connection elements 26 protrude during the insertion movement of the withdrawable summation current transformer 100 without colliding with the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142.
  • FIG. 6 An alternative embodiment of a withdrawable summation current transformer 100' according to the invention and of a corresponding, alternative modular residual current device 1' are schematically shown.
  • Figure 6 shows the alternative plug-in summation current transformer 100', which is used for a two-pole residual current device 1' (see Figure 7 ) and therefore has only two primary conductors 110', 120', which in turn are passed twice through the magnetic core 102'.
  • the magnetic core 102' is now erected so that the primary conductors 110', 120' are guided from top to bottom - ie from the front side 11 to the fastening side 12 - through the opening of the magnetic core 102'.
  • the first and second ends 111', 112', 121', 122' of the two primary conductors 110' and 120' are again angled outwards so that between the primary conductor ends 111', 112', 121', 122' and the housing 101' of the two-pole plug-in summation current transformer 100', a free space defined by the distance to the magnetic core 102' is created, into which the connection elements 26 protrude without Insertion movement to collide with the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142.
  • the two-pole residual current device 1' shown in a side view has only two modules - an RCD module 2 and an MCB module 3 (see Figures 1 and 2 ) - which are structurally equivalent to modules 2 and 3 of the Figures 1 to 5 correspond to the modules 2, 3 shown and described and each have an independent, structurally stable insulating housing 10.
  • This design makes it possible to combine modular protective switching devices, for example two-, three-, or four-pole FI/LS residual current circuit breakers 1, 1', with cross-module assemblies such as the withdrawable summation current transformer 100, 100', whereby the respective withdrawable summation current transformer 100, 100' is specifically adapted to the modular conditions of the respective residual current circuit breaker 1, 1'.
  • a first step S1 at least one MCB module 3 is attached to an RCD module 2, forming a residual current device 1, 1' with a module-spanning installation space 16.
  • Using only one MCB module 3 results in a two-pole residual current device 1'; installing three MCB modules results in a four-pole residual current device 1.
  • the withdrawable summation current transformer 100, 100' matching the respective residual current device 1, 1' is inserted into the cross-module installation space 16 in an insertion direction R1.
  • the first ends 111, 121, 131, 141, 111', 121' as well as the second ends 112, 122, 132, 142, 112', 122' of the primary conductors 110, 120, 130, 140, 110', 120' are positioned adjacent to the connection element 26 assigned to them.
  • a third step S3 joining connections are established between the first ends or second ends 111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122' of the primary conductors 110, 120, 130, 140, 110', 120' and the connecting element 26 of the respective module 2, 3, which is uniquely assigned to the respective primary conductor end 111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122'.
  • the joining connection can be mechanical, for example, by clamping or crimping, or thermal, such as soldering, brazing, or welding. Combinations of the various joining methods are also possible.
  • step S3 in which the withdrawable summation current transformer 100, 100' is moved in an engagement direction R2 oriented transversely to the insertion direction until the primary conductor ends 111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122' are located in the immediate vicinity of the connecting element 26 assigned to them.
  • the installation sequence is independent of whether it is a two-pole, three-pole or four-pole FI/LS residual current device 1, 1'.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (12)

  1. Tiroir-transformateur sommateur de courant (100, 100') pour un disjoncteur-détecteur de fuites (1, 1') formé de plusieurs modules (2, 3) stables au niveau de la mécanique des structures,
    - avec un boîtier (101, 101'), dans lequel un noyau magnétique (102, 102') est logé et soutenu, par l'ouverture duquel sont passés au moins deux conducteurs primaires rigides (110, 120, 130, 140, 110', 120'),
    - dans lequel chacun des conducteurs primaires (110, 120, 130, 140, 110', 120') présente une première extrémité (111, 121, 131, 141, 111', 121') et une deuxième extrémité (112, 122, 132, 142, 112', 122') pour une mise en contact chacune avec un élément de raccordement (26) du module (2, 3) affecté uniquement au conducteur primaire respectif (110, 120, 130, 140, 110', 120'),
    - dans lequel le tiroir-transformateur sommateur de courant (100, 100') présente au moins une structure de guidage (108, 108') qui permet une insertion guidée du tiroir-transformateur sommateur de courant (100, 100') le long d'un sens d'insertion (R1) dans un espace de montage (16) ouvert latéralement, s'étendant sur les plusieurs modules (2, 3) du disjoncteur-détecteur de fuites (1, 1'), dans lequel les extrémités du conducteur primaire (111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122') après l'insertion prennent une position prédéfinie par rapport aux éléments de raccordement (26) leur étant à chaque fois affectés.
  2. Tiroir-transformateur sommateur de courant (100, 100') selon la revendication 1, dans lequel chacun des conducteurs primaires (110, 120, 130, 140, 110', 120') est guidé au moins deux fois à travers l'ouverture du noyau magnétique (102, 102').
  3. Tiroir-transformateur sommateur de courant (100, 100') selon l'une des revendications précédentes, dans lequel la première et la deuxième extrémité (111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122') de chaque conducteur primaire (110, 120, 130, 140, 110', 120') sont orientées en sens inverse l'une de l'autre transversalement au sens d'insertion (R1).
  4. Tiroir-transformateur sommateur de courant (100, 100') selon l'une des revendications précédentes, dans lequel les premières extrémités (111, 121, 131, 141, 111', 121') des conducteurs primaires (110, 120, 130, 140, 110', 120') sont disposées les unes derrière les autres dans le sens d'insertion (R1) de même que les deuxièmes extrémités (112, 122, 132, 142, 112', 122') des conducteurs primaires (110, 120, 130, 140, 110', 120') sont disposées les unes derrière les autres dans le sens d'insertion (R1).
  5. Tiroir-transformateur sommateur de courant (100, 100') selon l'une des revendications précédentes, dans lequel le boîtier (101, 101') présente sur son côté externe plusieurs entretoises de guidage (109, 109') pour le guidage des conducteurs primaires (110, 120, 130, 140, 110', 120').
  6. Tiroir-transformateur sommateur de courant (100, 100') selon l'une des revendications précédentes, dans lequel les extrémités (111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122') des conducteurs primaires (110, 120, 130, 140, 110', 120') sont disposées vers le bas, c'est-à-dire du côté frontal (11) au côté de fixation (12) en étant espacées du boîtier (101, 101').
  7. Tiroir-transformateur sommateur de courant (100, 100') selon l'une des revendications précédentes, dans lequel le tiroir-transformateur sommateur de courant (100, 100') présente un profil externe parallélépipédique.
  8. Disjoncteur-détecteur de fuites modulaire (1, 1'),
    - avec un premier module (3) conçu comme un module MCB, dans lequel est disposé un trajet de courant pour la mise en contact avec un conducteur de phase, lequel présente un contact de commutation ainsi qu'une mécanique de commutation avec un système de déclenchement magnétique et un thermique pour interrompre le contact de commutation,
    - avec un deuxième module (2) conçu comme un module RCD, dans lequel est disposé un trajet de courant pour la mise en contact avec un conducteur neutre,
    - dans lequel les deux modules présentent à chaque fois un boîtier en matériau isolant (10) avec un côté frontal (11), un côté de fixation (12) disposé à l'opposé du côté frontal (11), ainsi qu'avec des côtés étroits et larges (13, 14) reliant le côté frontal et le côté de fixation (11, 12), et sont disposés l'un à côté de l'autre,
    - dans lequel les boîtiers en matériau isolant (10) présentent à chaque fois une ouverture d'insertion s'étendant d'un côté large à l'autre (14), ce par quoi lors d'une combinaison du module MCB (3) et du module RCD (2) un espace de montage inter-modules (16) est formé, dans lequel est logé et soutenu un tiroir-transformateur sommateur de courant (100, 100') inter-modules, formé selon l'une des revendications 1 à 7.
  9. Disjoncteur-détecteur de fuites modulaire (1, 1') selon la revendication 8, avec au moins un autre module (3), lequel est conçu comme un module MCB et est disposé à côté du premier module (3).
  10. Procédé de montage pour un disjoncteur-détecteur de fuites modulaire (1, 1') selon l'une des revendications 8 ou 9, comprenant les étapes de :
    a) fixation d'au moins un module MCB (3) à un module RCD (2) de sorte qu'un espace de montage inter-modules (16) est formé ;
    b) insertion d'un tiroir-transformateur sommateur de courant (100, 100'), formé selon l'une des revendications 1 à 7, dans l'espace de montage (16) dans un sens d'insertion (R1) ;
    c) fabrication de liaisons jointives entre les premières resp. deuxièmes extrémités (111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122') des conducteurs primaires (110, 120, 130, 140, 110', 120') et un élément de raccordement (26) du module respectif (2, 3) affecté uniquement à l'extrémité de conducteur primaire respective (111, 112, 121, 122, 131, 132, 141, 142, 111', 112', 121', 122').
  11. Procédé de montage selon la revendication 10, comprenant l'étape supplémentaire :
    b1) déplacement du tiroir-transformateur sommateur de courant (100, 100') dans un sens d'engagement (R2) orienté transversalement au sens d'insertion (R1),
    dans lequel l'étape supplémentaire b1) est réalisée avant la fabrication de liaisons jointives.
  12. Procédé de montage selon l'une des revendications 10 ou 11, dans lequel l'étape c) fabrication de liaisons jointives se fait thermiquement par soudure ou brasage.
EP22185636.2A 2021-08-05 2022-07-19 Tiroir-transformateur sommateur de courant, disjoncteur-détecteur de fuites à la terre et procédé de montage Active EP4131297B1 (fr)

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DE102022207779A1 (de) * 2022-07-28 2024-02-08 Siemens Aktiengesellschaft Einschub-Summenstromwandler-Baugruppe, Reiheneinbaugerät und Montageverfahren
DE102024209258A1 (de) * 2024-09-25 2026-03-26 Siemens Aktiengesellschaft Summenstromwandler-Baugruppe und Gerät zur Fehlerstromerfassung

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FR2662014B1 (fr) 1990-05-10 1992-07-24 Merlin Gerin Transformateur homopolaire pour interrupteurs ou disjoncteurs differentiels et procede de montage.
ES2292393T3 (es) 2000-09-21 2008-03-16 Siemens Aktiengesellschaft Cortacircuito automatico en forma constructiva pequeña con disposicion de bornes universal.
EP1473750A1 (fr) 2003-04-30 2004-11-03 Siemens Aktiengesellschaft Appareil interrupteur électromagnétique
DE102004034859A1 (de) 2004-07-19 2006-02-16 Siemens Ag Schutzschaltgerät in Schmalbauweise
AT505096B1 (de) 2004-10-25 2012-01-15 Moeller Gebaeudeautomation Kg Schalteinrichtung
DE102012212236A1 (de) 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Schutzschaltgerät und Magnetjoch
DE102013211539B4 (de) 2012-08-31 2020-08-06 Siemens Aktiengesellschaft Schaltmechanik und elektromechanisches Schutzschaltgerät
DE102014215007A1 (de) 2014-07-30 2016-02-04 Siemens Aktiengesellschaft Schutzschaltgerät und Magnetjoch
DE102015213375B4 (de) 2015-07-16 2023-06-07 Siemens Ag Thermische Überlast-Auslösevorrichtung und Schutzschaltgerät
DE102015217704A1 (de) 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
DE102018202204A1 (de) 2018-02-13 2019-08-14 Siemens Aktiengesellschaft Netzspannungsunabhängiges Fehlerstrom-Schutzschaltgerät und Montageverfahren

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