EP2932521B1 - Automate de sécurité ayant un court-circuit auxiliaire - Google Patents

Automate de sécurité ayant un court-circuit auxiliaire Download PDF

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Publication number
EP2932521B1
EP2932521B1 EP13814880.4A EP13814880A EP2932521B1 EP 2932521 B1 EP2932521 B1 EP 2932521B1 EP 13814880 A EP13814880 A EP 13814880A EP 2932521 B1 EP2932521 B1 EP 2932521B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
automatic circuit
current
actuation
automatic
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
EP13814880.4A
Other languages
German (de)
English (en)
Other versions
EP2932521A1 (fr
Inventor
Elmar Schaper
Lutz Heuer
Detlev Schürgens
Bernd Schulz
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP2932521A1 publication Critical patent/EP2932521A1/fr
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Publication of EP2932521B1 publication Critical patent/EP2932521B1/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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass

Definitions

  • the present invention relates to a circuit breaker for securing a phase with an input terminal, an output terminal, a current path electrically connecting the input terminal and the output terminal, a disconnecting device disposed in the current path and configured to interrupt it upon actuation, and a monitoring device which is designed to monitor the current in the current path and to actuate the disconnecting device upon detection of an overcurrent. Furthermore, the invention relates to a fuse arrangement with a plurality of above-mentioned circuit breaker for use in a multi-phase supply line, each phase is secured with a circuit breaker.
  • safety devices In circuits electrical lines are protected from heating and short circuit by the use of safety devices that cause, for example, in the event of a short circuit interruption of the line.
  • safety devices can be designed as automatic circuit breakers or as fuses.
  • Such a circuit breaker is connected to its input terminal to a power source. Its output terminal is connected to the load, with the input terminal and the output terminal connected via a current path.
  • a separation device is arranged, which is designed to interrupt this upon actuation.
  • the separator is usually designed as a switch, more precisely as an opener.
  • the automatic circuit breaker additionally has a monitoring device which monitors the current in the current path. When detecting an overcurrent, the separation device is actuated by the monitoring device, so that it interrupts the current path.
  • the circuit breaker on an actuating element which is actuated upon actuation of the separating device, so that the actuation of the separating device is recognizable from the outside.
  • the separating device can be actuated manually via the actuating element in order to cancel or bring about the interruption.
  • the switch-off time to extinction of the arc is in known circuit breakers at least 4 ms. During this time, however, damage or even destruction of the load connected to the output terminal of the circuit breaker can occur.
  • each phase is protected with such a circuit breaker.
  • a contactor or a motor switching device can be exceeded, so that circuit breakers must be selected, which already trigger at low currents.
  • the switching devices are oversized, which is associated with increased costs and can lead to additional losses. This leads to a design conflict in applications with high peak currents, such as may occur when starting up motors. Also, each individual dimensioning of the system is required.
  • assignment type 1 downstream devices, such as contactors or semiconductor switching devices, may be destroyed.
  • assignment type 2 the downstream devices must in principle remain functional. While mechanical switching devices, such as contactors, are often assigned to assignment type 2, semiconductor switching devices, for example for motors, usually meet the requirements of assignment type 1.
  • the self-switch comprises two juxtaposed self-switches, each of which is a series circuit of a main current path, a normally closed first switch and an electromagnetic tripping device connected between a first and a second electrical connection, an electrothermal tripping device parallel to the one normally closed second switch having the main current path, so that the electrothermal tripping device is normally bridged by the main current path, and a switching mechanism for opening the first switch and for actuating a driver, which transmits the switching movements of the switching mechanism of the one self-switch to the switching mechanism of the other self-switch.
  • the electromagnetic trip device has a first armature for opening the second switch upon reaching a first threshold current and a second armature for opening the first switch and for actuating the switching mechanism on reaching a second threshold current, which is greater than the first threshold current.
  • the invention is therefore an object of the invention to provide a circuit breaker and a fuse assembly of the type mentioned above, which allow improved protection of downstream loads and switching devices against overcurrents.
  • a circuit breaker for protecting a phase is provided with an input terminal, an output terminal, a current path electrically connecting the input terminal and the output terminal, a separator disposed in the current path and configured to interrupt it upon actuation Deriving terminal, a discharge path, which is connected at its one end to the current path between the separator and the output terminal and at its other end to the discharge terminal, a connection device which is arranged in the discharge path and designed to connect through this in an operation, and a Monitoring device which is designed to monitor the current in the current path and to operate the disconnecting device and the connecting device upon detection of an overcurrent, so that the currents during switching of the disconnecting device after switching the connecting device over d
  • the drainage terminal drain, the monitoring device is designed to perform a continuous current monitoring and a short-circuit current monitoring.
  • the basic idea of the present invention is thus to provide a circuit breaker which ensures reliable protection of downstream loads from overcurrents by the connection of continuous current and short-circuit current, and whose protective effect occurs particularly rapidly by currents during the switching of the separator by occurring arcs on the discharge terminal be derived.
  • the circuit breaker thus has two characteristics, on the one hand the line protection to protect against excessive continuous currents that are above a permissible maximum continuous current, and on the other hand a short-circuit protection to ensure protection against excessive peak currents.
  • the currents during the switching of the separating device can flow off after switching the connecting device via the discharge terminal, so that the protective function of the circuit breaker already occurs very quickly.
  • times of the order of magnitude of 0.2 ms can be achieved, after which the load is substantially without current.
  • the monitoring device is designed for the common actuation of the separating device and the connecting device.
  • Particularly preferred is a simultaneous actuation of the separating device and the connecting device by the monitoring device.
  • the automatic circuit breaker is connected with its input terminal to a power supply and at its output terminal to a load, which may have an electrical switching device connectable.
  • the discharge terminal is preferably connectable to a ground or a neutral, over which a current can flow during switching.
  • the separating device is preferably designed as an opener for interrupting the current path.
  • the connecting device is usually designed as a closer for connecting through the Ableitpfades.
  • each circuit breaker is connected with its input terminal to a phase of the power supply.
  • the Ableitklemmen are preferably connected to a ground or a PE conductor over which the current can flow when switching.
  • the discharge terminal can be connected to a different phase or a synthetic star point.
  • the circuit breaker is developed such that the monitoring device has a bi-metal switch for continuous current monitoring.
  • the heat is detected in the current path to detect an excessive line current.
  • the protective behavior can be selected.
  • the circuit breaker is developed such that the monitoring device has a magnetic switch for short-circuit current monitoring. Accordingly, a magnetic quick release as short-circuit protection for fast processes, ie fast peak currents, respectively.
  • the sensitivity of the short-circuit protection can be achieved by the property of the magnetic material.
  • the time course of the magnetic field corresponds to a hysteresis curve.
  • a magnetic field is generated by the overcurrent, so that with the aid of a relay coil and armature actuation can take place.
  • the circuit breaker is developed such that the circuit breaker has a coupling device with which the separating device and the connecting device are coupled for common operation, and the monitoring device is designed for actuating the separating device and the connecting device via the coupling device.
  • the monitoring device therefore only has to actuate the coupling device, whereby the separating device and the connecting device are automatically actuated.
  • the coupling device can in principle be designed as desired.
  • the coupling device may be an electrical or electronic coupling device.
  • the coupling device is a mechanical coupling device. More preferably, the actuation of the coupling device is effected by a relay.
  • the circuit breaker is developed such that the circuit breaker has an actuating element which is actuated by the monitoring device during an actuation, so that the actuation is recognizable from the outside.
  • the actuating element is connected to the coupling device.
  • the circuit breaker is developed such that the Actuator is executed to perform a manual operation of the separating device and the connecting device. Accordingly, the circuit breaker can be manually operated to disconnect a downstream load from the power supply.
  • the actuating element is connected to the coupling device.
  • the fuse arrangement is developed such that the circuit breakers are mechanically coupled together. Due to the mechanical coupling, the circuit breakers can mutually transmit an operation by their respective monitoring device on the other circuit breakers.
  • the mechanical coupling is particularly reliable and easy to manufacture.
  • the fuse arrangement is further developed such that the circuit breakers have an actuating element for a manual actuation of the separating device and the connecting device, and the circuit breakers are mechanically coupled to each other via a coupling element.
  • the mechanical coupling is particularly reliable and allows easy transfer of actuation between the circuit breakers.
  • the coupling element is designed as a separate component for attachment to the actuating elements.
  • the securing arrangement is developed such that the coupling element has a manual actuator for manual operation of the coupled circuit breaker.
  • the fuse assembly can be manually operated in accordance with the operation of the circuit breaker to separate the load from the power supply for all phases simultaneously.
  • the manual actuator for manual operation is carried out both for the common separation of the current paths of the individual circuit breakers as well as for interconnecting the current paths, according to the function of the actuating element of the circuit breaker.
  • the manual actuator is designed such that the operation is visible from the outside.
  • the fuse arrangement is designed as an integral device.
  • the FIGS. 1 to 3 The fuse arrangement 1 is connected on the input side to a polyphase power supply 3 or supply line, each phase 4, 5, 6 being secured by a circuit breaker 2.
  • Each automatic circuit breaker 2 is designed to protect a phase 4, 5, 6 and has an input terminal 7, an output terminal 8 and a discharge terminal 9.
  • the circuit breakers 2 are connected to their input terminal 7 each with a phase 4, 5, 6 and with its output terminal 8 to a load 10.
  • the load 10 is a multi-phase load, which is exemplified here by an electronic switching device.
  • the discharge terminals 9 are each connected to a ground 11.
  • the input terminal 7 and the output terminal 8 are electrically connected via a current path 12.
  • a separator 13 and a monitoring device, 14 are arranged in the current path 12.
  • the disconnecting device 13 is designed as a normally closed contact in order to interrupt the current path 12 during an actuation.
  • the monitoring device 14 is designed to monitor a current in the current path 12.
  • the circuit breaker 2 also has a discharge path 15 which is connected at its one end to the current path 12 between the separator 13 and the output terminal 8 and at its other end to the discharge terminal 9.
  • a connecting device 16 is arranged, which is designed to connect through the discharge path 15 in an actuation. Accordingly, the connecting device 16 is designed as a closer.
  • the separating device 13 and the connecting device 16 are coupled to a common operation with a coupling device 17.
  • the coupling device 17 in this embodiment is a mechanical coupling device 17.
  • the coupling device 17, an actuating element is connected, which is also actuated upon actuation of the coupling device 17, so that the operation from the outside, i. from outside the circuit breaker (2), recognizable.
  • a manual actuation of the coupling device 17 and thus separating device 13 and the connecting device 16 can be performed by the actuating element.
  • the monitoring device 14 is executed, upon detection of an overcurrent, the separation device 13 and the To operate connecting device 16 via the coupling device 17.
  • the monitoring device 14 has a bi-metal switch 19 for continuous current monitoring in order to detect an excessive line current as an overcurrent.
  • the monitoring device 14 has a magnetic switch 20 with a magnetic quick release as short-circuit protection for fast operations to monitor a short-circuit current as overcurrent. In the magnetic switch 20, a magnetic field is generated by the overcurrent, so that with the aid of a relay coil and armature actuation of the coupling device 17 takes place.
  • FIGS. 4 and 5 schematically show the breakdown of the current I k through the output terminal 8 for a conventional circuit breaker and for a circuit breaker 2 of the described embodiment.
  • the current has fallen in the conventional circuit breaker only after about 4 ms to a safe level, while this is already the case with the circuit breaker 2 described here after about 0.2 ms.
  • Fig. 6 shows the operation of the circuit breaker 2 in detail.
  • the switching of the disconnecting device 13 and the connecting device 16 in this embodiment takes about 0.2 ms.
  • the entire current I c flows over as output current I k the output terminal 8 and thus the load.
  • the circuit breakers 2 are mechanically coupled to each other via a coupling element 21.
  • the automatic circuit breakers 2 can mutually transmit an actuation by their respective monitoring device 14 to the other automatic circuit breakers 2.
  • the coupling element 21 in this embodiment is designed as a separate component, which is connected in a manner not shown here in detail with the actuators of the three circuit breakers 2.
  • the coupling element 21 is designed with a manual actuator 22 for manual actuation of the coupled automatic circuit breakers 2.
  • the hand actuator 22 is designed for manual actuation both for the common disconnection and interconnection of the current paths 12, wherein the manual operation is recognizable from the outside via the hand actuator 22.
  • the fuse arrangement 1 is designed as an integral device. LIST OF REFERENCE NUMBERS fuse assembly 1 breaker 2 Power supply, supply line 3 phase 4 phase 5 phase 6 input terminal 7 output terminal 8th guard terminal 9 load 10 Dimensions 11 current path 12 separating device 13 monitoring device 14 discharge path 15 connecting device 16 coupling device 17 Bimetal switch 19 magnetic switches 20 coupling element 21 manual actuator 22

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (11)

  1. Automate de sécurité (2) pour la protection d'une phase (4, 5, 6) doté
    d'une borne d'entrée (7),
    d'une borne de sortie (8),
    d'un trajet de courant (12) qui relie de manière électriquement conductrice la borne d'entrée (7) et la borne de sortie (8),
    d'un dispositif de séparation (13), qui est disposé sur le trajet de courant (12) et est conçu pour interrompre celui-ci lors d'un actionnement,
    d'une borne de dérivation (9),
    d'un trajet de dérivation (15) qui est relié à une de ses extrémités avec le trajet de courant (12) entre le dispositif de séparation (13) et la borne de sortie (8), ainsi qu'à son autre extrémité avec la borne de dérivation (9),
    d'un dispositif de connexion (16), qui est disposé sur le trajet de dérivations (15) et est conçu pour connecter celui-ci lors d'un actionnement, et
    d'un système de surveillance (14) qui est conçu pour surveiller le courant dans le trajet de courant (12) et pour actionner le dispositif de séparation (13) et le dispositif de connexion (16) lors de la détection d'un courant de surcharge de sorte que les courants se déchargent par la borne de dérivation (9) pendant le fonctionnement du dispositif de séparation (13) après la mise en marche du système de connexion (16), où
    le système de surveillance (14) est conçu pour effectuer une surveillance du courant continu et une surveillance du courant de court-circuit.
  2. Automate de sécurité (2) selon la revendication 1, caractérisé en ce que
    le système de surveillance (14) présente un interrupteur bimétallique (19) pour la surveillance du courant continu.
  3. Automate de sécurité (2) selon l'une des revendications 1 ou 2, caractérisé en ce que
    le système de surveillance (14) présente un commutateur magnétique (20) pour la surveillance du courant de court-circuit.
  4. Automate de sécurité (2) selon l'une des revendications précédentes, caractérisé en ce que
    l'automate de sécurité (2) présente un système de couplage (17) avec lequel le dispositif de séparation (13) et le dispositif de connexion (16) sont couplés pour un actionnement conjoint, et
    le système de surveillance (14) est conçu pour l'actionnement du dispositif de séparation (13) et du dispositif de connexion (16) par l'intermédiaire du système de couplage (17).
  5. Automate de sécurité (2) selon l'une des revendications précédentes, caractérisé en ce que
    l'automate de sécurité (2) présente un élément d'actionnement, lequel est actionné lors d'un actionnement par le système de surveillance (14) de sorte que l'actionnement peut être détecté de l'extérieur.
  6. Automate de sécurité (2) selon la revendication 5, caractérisé en ce que
    l'élément d'actionnement est conçu pour exécuter un actionnement manuel du dispositif de séparation (13) et du dispositif de connexion (16).
  7. Ensemble de sécurité (1) doté d'une multitude d'automates de sécurité (2) selon l'une des revendications précédentes pour une utilisation dans une ligne d'alimentation (3) multiphasique, où
    chaque phase (4, 5, 6) est protégée avec un automate de sécurité, et
    les automates de sécurité (2) sont couplés entre eux.7
  8. Ensemble de sécurité (1) selon la revendication précédente 7, dans lequel
    les automates de sécurité (2) sont couplés entre eux mécaniquement.
  9. Ensemble de sécurité (1) selon la revendication précédente 8, dans lequel
    les automates de sécurité (2) présentent un élément d'actionnement pour un actionnement manuel du dispositif de séparation (13) et du dispositif de connexion (16), et
    les automates de sécurité (2) sont couplés entre eux mécaniquement par l'intermédiaire d'un élément de couplage (21).
  10. Ensemble de sécurité (1) selon la revendication précédente 9, dans lequel
    l'élément de couplage (21) présente un actionneur manuel (22) pour l'actionnement manuel des automates de sécurité (2) couplés.
  11. Ensemble de sécurité (1) selon l'une des revendications précédentes, où
    l'ensemble de sécurité (1) est conçu sous la forme d'un appareil monobloc.
EP13814880.4A 2012-12-17 2013-12-17 Automate de sécurité ayant un court-circuit auxiliaire Active EP2932521B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012112435.3A DE102012112435B4 (de) 2012-12-17 2012-12-17 Sicherungsautomat mit Hilfskurzschluss und Sicherungsanordnung mit einer Mehrzahl solcher Sicherungsautomaten
PCT/EP2013/076971 WO2014095918A1 (fr) 2012-12-17 2013-12-17 Automate de sécurité ayant un court-circuit auxiliaire

Publications (2)

Publication Number Publication Date
EP2932521A1 EP2932521A1 (fr) 2015-10-21
EP2932521B1 true EP2932521B1 (fr) 2017-09-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13814880.4A Active EP2932521B1 (fr) 2012-12-17 2013-12-17 Automate de sécurité ayant un court-circuit auxiliaire

Country Status (7)

Country Link
US (1) US20150348734A1 (fr)
EP (1) EP2932521B1 (fr)
KR (1) KR20150084048A (fr)
CN (1) CN104871281B (fr)
DE (1) DE102012112435B4 (fr)
RU (1) RU2015128479A (fr)
WO (1) WO2014095918A1 (fr)

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EP3278349B1 (fr) * 2015-03-31 2020-09-16 Eaton Intelligent Power Limited Ensemble d'armoire électrique avec mise hors circuit améliorée en cas de surcharge
CN105762036B (zh) * 2016-03-29 2017-10-20 东南大学 一种基于涡流自触发的模块化多电平换流器直流侧断路器
CN105823984B (zh) * 2016-05-16 2018-09-14 山东省产品质量检验研究院 一种隔离开关短路接通试验辅助装置及应用
EP3498471B1 (fr) 2017-12-18 2020-10-07 ABB Power Grids Switzerland AG Procédé de consolidation d'un corps enroulé
BE1026445B1 (de) * 2018-07-05 2020-02-04 Phoenix Contact Gmbh & Co Geräteschutzschalter mit intelligenter Grenzwertermittlung
US11398361B2 (en) * 2019-09-30 2022-07-26 Rockwell Automation Technologies, Inc. Systems and methods for automatically configuring point-on-wave settings in a relay device
CN112133610B (zh) * 2020-09-16 2023-01-31 华翔翔能科技股份有限公司 一种具有可视化功能的智能断路器

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DE102010048188B4 (de) * 2010-10-13 2020-11-12 Phoenix Contact Gmbh & Co. Kg Akkumulator-Kontrollvorrichtung, sowie Verfahren und System zur elektrischen Hilfsversorgung

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Also Published As

Publication number Publication date
DE102012112435B4 (de) 2015-12-10
RU2015128479A (ru) 2017-01-18
CN104871281A (zh) 2015-08-26
DE102012112435A1 (de) 2014-06-18
CN104871281B (zh) 2018-06-01
KR20150084048A (ko) 2015-07-21
US20150348734A1 (en) 2015-12-03
WO2014095918A1 (fr) 2014-06-26
EP2932521A1 (fr) 2015-10-21

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