EP4213175A1 - Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage - Google Patents

Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage Download PDF

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Publication number
EP4213175A1
EP4213175A1 EP22213486.8A EP22213486A EP4213175A1 EP 4213175 A1 EP4213175 A1 EP 4213175A1 EP 22213486 A EP22213486 A EP 22213486A EP 4213175 A1 EP4213175 A1 EP 4213175A1
Authority
EP
European Patent Office
Prior art keywords
low
switching device
circuit board
voltage
printed circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22213486.8A
Other languages
German (de)
English (en)
Other versions
EP4213175B1 (fr
Inventor
Andreas Mundt
Franz Ness
Gerald NÖRL
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP4213175A1 publication Critical patent/EP4213175A1/fr
Application granted granted Critical
Publication of EP4213175B1 publication Critical patent/EP4213175B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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
    • 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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages

Definitions

  • Electromechanical protective switching devices for example circuit breakers, miniature circuit breakers, residual current circuit breakers and arcing or fire protection switches - are used to monitor and protect an electrical circuit and are used in particular as switching and safety elements in electrical energy supply and distribution networks.
  • the protective switching device is electrically conductively 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 switching device has at least one switching contact which can be opened when a predefined state occurs—for example when a short circuit or a fault current is detected—in order to separate the monitored circuit from the electrical mains.
  • Such protective switching devices are also known as modular installation devices in the field of low-voltage technology.
  • Circuit breakers are specially designed for high currents.
  • a circuit breaker which is also referred to as a “miniature circuit breaker” (MCB)
  • MBC miniature circuit breaker
  • Circuit breakers and miniature circuit breakers guarantee safe shutdown in the event of a short circuit and protect consumers and systems Overload, for example damage to the electrical lines due to excessive heating as a result of an excessively high electrical current. They are designed to automatically switch off a circuit to be monitored in the event of a short circuit or if an overload occurs and thus to separate it from the rest of the line network.
  • FI circuit breaker short: FI switch
  • DI switch residual current circuit breaker
  • RCD Residual Current Protective Device
  • the magnitude of the current in a line leading to an electrical consumer is compared with the magnitude of the current in a line leading back from the electrical consumer, for example a neutral conductor, using a so-called summation current transformer .
  • This has a ring-shaped magnetic core through which the primary conductors (return electrical lines) are passed.
  • the magnetic core itself is wrapped with a secondary conductor or a secondary winding.
  • the sum of the electrical currents flowing to the consumer is equal to the sum of the electrical currents flowing back from the consumer.
  • AFDD Arc Fault Detection Device
  • AFCI Arc Fault Circuit Interrupter
  • the low-voltage protective switching device has an insulating housing, which in turn has a front side, a fastening side opposite the front side, as well as narrow and broad sides connecting the front side and the fastening side, and a switching contact with a stationary contact arranged in the housing and a moving contact that can be moved relative thereto. Furthermore, the low-voltage protective switching device has an arc quenching chamber and an arc guide rail, the first end of which is guided under the arc quenching chamber and the second end of which protrudes in the direction of the switching contact. Furthermore, the low-voltage protective switching device has a circuit board which is arranged between the arc extinguishing chamber and the fastening side, the printed circuit board being electrically conductively connected to the arc guide rail via a voltage tap.
  • the space available inside the insulating housing is very limited and must therefore be used efficiently.
  • the printed circuit board which is used to equip the low-voltage protective switching device according to the invention with additional digital functions—for example communication or monitoring functions—is therefore arranged in a space-saving manner in the area of the fastening side of the insulating material housing.
  • the physical proximity of the circuit board to the arc guide rail is utilized for the power supply to the circuit board. Since the arc guide rail is always under nominal voltage, the printed circuit board can be supplied with the required operating voltage with the help of the voltage tap, i.e. through an electrically conductive connection with the arc guide rail.
  • a second switching contact and a second arc guide rail associated therewith are arranged in the insulating housing, the printed circuit board being electrically conductively connected to the second arc guide rail via a second voltage tap.
  • the insulating housing has a width of only one pitch unit.
  • multi-pole miniature circuit breakers compact low-voltage protective switching devices with a width of just one pitch unit and combined protective switching devices, such as the FI/LS or RCBO type, can be equipped with additional digital functions.
  • the insulating housing consists of several modules arranged next to one another, with a switching contact and an arc guide rail assigned to it being arranged in each of the several modules.
  • the printed circuit board extends across the multiple modules and is electrically conductively connected to each of the arc guide rails via its own voltage tap.
  • the voltage tap is designed as a leaf spring tap.
  • the design of the voltage tap as a leaf spring tap represents a structurally simple option due to the structural proximity of the printed circuit board to the arc guide rail, which is also easy to assemble without additional tools. The production costs are thereby further reduced.
  • the leaf spring tap is mounted on the printed circuit board as a component that can be fitted with an SMD.
  • the printed circuit board is placed in the insulating material housing and fixed with a housing cover in such a way that it is received and held in the insulating material housing and, on the other hand, contact between the printed circuit board and the arc guide rail is formed by the insertion, whereby the printed circuit board is supplied with the required operating voltage can be.
  • assembly costs can be significantly reduced.
  • the insulating material housing is assembled from a plurality of modules in a preceding assembly step, with the printed circuit board being placed in the plurality of modules, as a result of which contact is made with the plurality of arc guide rails of the plurality of modules.
  • various different protective switching devices can be formed without negatively affecting the assembly of the printed circuit board.
  • the moving contact 3 is moved away from the fixed contact 2 via the moving contact carrier 4, then - if an electric current flows through the switching contact at this point in time - an arc is produced, which is initially between the fixed contact 2 and the moving contact 3 is burning. From a certain distance between the moving contact 3 and the fixed contact 2, the arc commutates to the free end 32, i.e. the foot point of the arc on the moving contact side jumps over to the free end 32 of the arc guide rail 30. The arc is guided via the guide rail 30 in the direction of the arc quenching chamber 20, where it is divided into a plurality of partial arcs by the quenching plates 21 and finally extinguished.
  • figure 4 shows a schematic detailed representation of the low-voltage protective switching device 1 according to the invention, which essentially has the same structure as that in figure 3 shown low-voltage protective switching device.
  • the insulating housing 10 of the low-voltage protective switching device 1 as described above, further functional assemblies, for example for the realization of communication or monitoring functions, be arranged.
  • a voltage tap ie an electrically conductive connection to a live component, is required.
  • the voltage is advantageously tapped off via all outer conductors (phase and neutral conductors) in order to be able to easily determine, for example, potential differences between the outer conductors.
  • the voltage tap is advantageously arranged on a printed circuit board 40 .
  • the voltage tap is designed as a leaf spring tap 41, which can be mounted on the printed circuit board 40 as a standard component as part of the SMD assembly thereof.
  • a leaf spring tap 41 is not absolutely necessary within the meaning of the invention and is therefore only to be understood as an example; other options for realizing a suitable voltage tap are therefore also included.
  • the circuit board 40 is arranged below the arc quenching chamber 20, ie between the arc quenching chamber 20 and the mounting side 12 in the insulating material housing 10, ie received and supported.
  • a housing cover 19 is provided to fix and protect the printed circuit board 40 from environmental influences, which is fastened to the fastening side 12 of the insulating housing 10 after the printed circuit board 40 has been mounted.
  • the spatial position of the printed circuit board 40 in the insulating material housing 10 is extremely advantageous since the first end 31 of the arc guide rail 30 is also located in this area. Since the arc guide rail 30 is permanently under the rated voltage during operation of the low-voltage protective switching device 1 is standing, the voltage tap, and thus the voltage supply of the at least one further functional assembly, can take place in a simple manner via the arc guide rail 30 .
  • the printed circuit board 40 is placed in a receiving space formed in the insulating material housing 10 and pushed with a housing cover 19 .
  • the receiving space is dimensioned such that the circuit board 40 is received and held in place in the insulating material housing 10 by being inserted.
  • the receiving space in the insulating material housing 10 is arranged in such a way that by inserting the printed circuit board 40 the contacting of the printed circuit board 40 with the first end 31 of the arc guide rail 30 is already realized.
  • the contacting takes place via the voltage tap, which is preferably designed as a leaf spring tap 41.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP22213486.8A 2022-01-13 2022-12-14 Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage Active EP4213175B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022200297.0A DE102022200297A1 (de) 2022-01-13 2022-01-13 Niederspannungs-Schutzschaltgerät und Montageverfahren

Publications (2)

Publication Number Publication Date
EP4213175A1 true EP4213175A1 (fr) 2023-07-19
EP4213175B1 EP4213175B1 (fr) 2024-06-12

Family

ID=84535795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22213486.8A Active EP4213175B1 (fr) 2022-01-13 2022-12-14 Disjoncteur basse tension avec circuit imprime et prise de tension et procédé de montage

Country Status (3)

Country Link
EP (1) EP4213175B1 (fr)
CN (1) CN116435149A (fr)
DE (1) DE102022200297A1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP1191562B1 (fr) 2000-09-21 2007-11-07 Siemens Aktiengesellschaft Disjoncteur à boîtier étroit avec dispositif de borne universel
DE102013211539A1 (de) 2012-08-31 2014-03-06 Siemens Aktiengesellschaft Schaltmechanik und elektromechanisches Schutzschaltgerät
EP2980822A1 (fr) 2014-07-30 2016-02-03 Siemens Aktiengesellschaft Appareil de commutation de protection et culasse magnétique
DE102015213375A1 (de) 2015-07-16 2017-01-19 Siemens Ag Thermische Überlast-Auslösevorrichtung und Schutzschaltgerät
DE102015217704A1 (de) 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
EP2685482B1 (fr) 2012-07-12 2017-05-31 Siemens Aktiengesellschaft Appareil de commutation de protection et culasse magnétique
CN109148229A (zh) * 2018-09-27 2019-01-04 杭州四方博瑞科技股份有限公司 智能断路器
CN210092012U (zh) * 2019-06-18 2020-02-18 新睿电气科技有限公司 一种模数化漏电保护的多极断路器
CN109616384B (zh) * 2018-12-03 2020-07-17 宏秀电气有限公司 内置电流互感器及零序电流互感器的拼接式微型断路器
CN112289648A (zh) * 2020-10-19 2021-01-29 浙江正泰电器股份有限公司 一种电子式剩余电流动作断路器
CN214313069U (zh) * 2020-10-29 2021-09-28 浙江正泰电器股份有限公司 漏电断路器装置
CN214898161U (zh) * 2021-07-01 2021-11-26 天津加美特电气股份有限公司 一种带有简易灭弧装置的n极断路器

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191562B1 (fr) 2000-09-21 2007-11-07 Siemens Aktiengesellschaft Disjoncteur à boîtier étroit avec dispositif de borne universel
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
EP2685482B1 (fr) 2012-07-12 2017-05-31 Siemens Aktiengesellschaft Appareil de commutation de protection et culasse magnétique
DE102013211539A1 (de) 2012-08-31 2014-03-06 Siemens Aktiengesellschaft Schaltmechanik und elektromechanisches Schutzschaltgerät
EP2980822A1 (fr) 2014-07-30 2016-02-03 Siemens Aktiengesellschaft Appareil de commutation de protection et culasse magnétique
DE102015213375A1 (de) 2015-07-16 2017-01-19 Siemens Ag Thermische Überlast-Auslösevorrichtung und Schutzschaltgerät
DE102015217704A1 (de) 2015-09-16 2017-03-16 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
CN109148229A (zh) * 2018-09-27 2019-01-04 杭州四方博瑞科技股份有限公司 智能断路器
CN109616384B (zh) * 2018-12-03 2020-07-17 宏秀电气有限公司 内置电流互感器及零序电流互感器的拼接式微型断路器
CN210092012U (zh) * 2019-06-18 2020-02-18 新睿电气科技有限公司 一种模数化漏电保护的多极断路器
CN112289648A (zh) * 2020-10-19 2021-01-29 浙江正泰电器股份有限公司 一种电子式剩余电流动作断路器
CN214313069U (zh) * 2020-10-29 2021-09-28 浙江正泰电器股份有限公司 漏电断路器装置
CN214898161U (zh) * 2021-07-01 2021-11-26 天津加美特电气股份有限公司 一种带有简易灭弧装置的n极断路器

Also Published As

Publication number Publication date
DE102022200297A1 (de) 2023-07-13
EP4213175B1 (fr) 2024-06-12
CN116435149A (zh) 2023-07-14

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