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EP1685578A1 - Switching protective device comprising fuses - Google Patents

Switching protective device comprising fuses

Info

Publication number
EP1685578A1
EP1685578A1 EP04731929A EP04731929A EP1685578A1 EP 1685578 A1 EP1685578 A1 EP 1685578A1 EP 04731929 A EP04731929 A EP 04731929A EP 04731929 A EP04731929 A EP 04731929A EP 1685578 A1 EP1685578 A1 EP 1685578A1
Authority
EP
European Patent Office
Prior art keywords
fuse
protection device
switching
switch protection
separating
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
EP04731929A
Other languages
German (de)
French (fr)
Other versions
EP1685578B1 (en
Inventor
Johann Seitz
Michael SCHRÖCK
Klaus Busch
Walter Apfelbacher
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
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 EP1685578A1 publication Critical patent/EP1685578A1/en
Application granted granted Critical
Publication of EP1685578B1 publication Critical patent/EP1685578B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/548—Electromechanical and static switch connected in series
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/102—Fuses mounted on or constituting the movable contact parts of the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/12—Adaptation for built-in fuse
    • H01H31/122—Fuses mounted on, or constituting the movable contact parts of, the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/545—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with pivoting fuse carrier

Definitions

  • the present invention relates to a switching protection device with an operating switching device for switching a device to be controlled on and off, a disconnecting device for separating an input terminal from an output terminal, which can be connected to the device to be controlled, and a protective device for protecting the device to be controlled against short circuit.
  • Electronic switching devices which often have silicon thyristors as switching elements, can be divided into two types of devices: solid-state contactors and soft starters.
  • Soft starters are mainly used to start motors and control or regulate the voltage during start-up using phase control.
  • Solid-state contactors only switch on and off.
  • Semiconductor contactors are often used to switch ohmic loads, mainly electrical heaters. The so-called vibration packet control for temperature control or regulation is often used for this purpose.
  • the short-circuit protection can be implemented using coordination type 1 or 2. According to type of coordination 1, the switching device is destroyed in the event of a short circuit and must be replaced completely. According to type of coordination 2, the switching device is still fully functional after a short circuit. The switching device remains intact. With prospective short-circuit currents common today (> 30 kA), type of coordination 2 can only be implemented with special semiconductor protection fuses. The short-circuit protection and the isolator function are usually implemented in a unit upstream or downstream of the electronic switching device. For this either circuit breakers or fuse switch disconnectors with fuses are suitable.
  • the power is usually extracted from low-voltage networks via so-called "branches".
  • Each branch should have the functions of consumer switching, overload switching, disconnection, short-circuit protection and overload protection. These functions are typically performed by several individual devices.
  • One exception is the Telemecanique company known, which is switched electromechanically and has the functions of disconnection, short-circuit, overload protection and operational switching.Otherwise, this multitude of functions is realized by at least two devices.
  • the object of the present invention is therefore to propose more compact switching devices for switching and protecting electrical consumers.
  • this object is achieved by a switching protection device with an operating switching device, ie a switching device for the operational switching on and off of a consumer to be controlled, and a disconnecting device for Disconnecting an input terminal from an output terminal, which can be connected to the device to be controlled, and a protective device for protection against short circuit, the protective device comprising at least one fuse for switching off in the event of a short circuit, and the operating switching device, the isolating device and the protective device per phase in series switched and integrated into a housing.
  • an operating switching device ie a switching device for the operational switching on and off of a consumer to be controlled
  • a disconnecting device for Disconnecting an input terminal from an output terminal, which can be connected to the device to be controlled
  • a protective device for protection against short circuit the protective device comprising at least one fuse for switching off in the event of a short circuit, and the operating switching device, the isolating device and the protective device per phase in series switched and integrated into a housing.
  • the switching protection device according to the invention can be designed as a soft starter, also called a semiconductor motor control device, or a semiconductor contactor. However, it can also be used as an electromechanical switching device, e.g. be implemented as a contactor.
  • the at least one fuse can preferably be removed from the outside of the housing, for example for replacement.
  • the at least one fuse preferably comprises a semiconductor fuse or semiconductor protection fuse. With regard to a short circuit, the type of coordination 2 can thus be fulfilled for electronic switching points.
  • Disconnecting device and an output terminal to the device to be controlled It is therefore possible that with open a disconnected fuse can be changed from the outside.
  • the disconnecting device can be combined with the fuse and, in the open state, disconnect and release the fuse for removing at least one contact. It is advantageous if the fuse is arranged in a movable part of the separating device. A rotating or sliding mechanism can be provided for the movable part of the separating device.
  • the separation device preferably has two separation points. Furthermore, the disconnecting device can have the functionality of a fuse switch disconnector.
  • the fuses are preferably designed as cylinder fuses.
  • a monitoring device for registering a tripping of the at least one fuse can be provided. This means that the fuse has been triggered and can be processed further.
  • electronic switching points can be bridged with mechanical contacts (e.g. relay or contactor).
  • an overload device in particular with a thermal overload relay, e.g. can be integrated with a bimetal strip or with an electronic overload relay.
  • current transformers can be used to measure the current. Overload protection can then be implemented with the current signal.
  • the switch protection device according to the invention or the entire branch circuit can be integrated into a construction and wiring system, with an exchange of the complete complete device is possible through plug technology. This reduces the effort when changing a device to a minimum.
  • the device should only be pluggable in the exhibition. This can be done, for example, by mechanically locking the fuse switch disconnector with the "base support", ie the device can only be replaced when the fuse switch disconnector is open.
  • the branch can be 1 or 3 poles. With 3-pole devices, only two current paths can be switched, i.e. be provided with switching elements.
  • FIG. 1 shows a circuit diagram of a "closed” load feeder with electronic switching point without overload protection
  • FIG. 2 shows a circuit diagram of an "open” load feeder with electronic switch point without overload protection and with a disconnection point
  • 3 shows a circuit diagram of an "open” load feeder with electronic switching point with overload protection and with two disconnection points
  • FIG. 4 shows a circuit diagram of an "open” load feeder with mechanical switch point with overload protection and with a separation point
  • FIG. 5 shows a perspective view of a switching protection device according to the invention.
  • the switch protection device 1 according to the invention shown in FIG. 1 is used to switch a 1 or 3-pole line.
  • a 3-pole cable must be a 3-pole device consisting of three current paths.
  • the switching protection device 1 has, in a simplified manner, an electrical switching device 2 and a fuse 3 connected in series therewith.
  • the fuse In the circuit shown on the left side of FIG. 1, the fuse is shown in the closed circuit.
  • the fuse 3 In Figure 2, the fuse 3 is shown in the open position. In this position, the circuit, not shown, is interrupted by a voltage network to a consumer. If the required air and creepage distances are maintained due to this separation, one can speak of a standardized separation property. If both connections of the fuse are disconnected from the circuit, there is a double disconnection point. Thus, it is in any case 'possible to replace the fuse 3-energized.
  • FIG. 3 shows another alternative of a compact switching protection device according to the invention.
  • fuse 3 is at two separation points from
  • the fuse 3 can thus be removed from the switching protection device 1 without voltage.
  • an overload device for protection against overload is arranged in the switching protection device 1.
  • FIG. Compared to the embodiment in FIG. 3, only one separation point is provided on fuse 3. The fuse 3 is thus in a not de-energized state when removed, ie when the load feeder is open.
  • the electronic switching device 2 of FIG. 3 is replaced by a mechanical switch. It can be seen that the individual shown in connection with Figures 1 to 4 Components in the switch protection devices can be combined in any way.
  • FIG. 5 shows a switching protection device 1 in perspective view. It has input terminals 4 and output terminals 5.
  • the fuse 3 is accommodated in a movable part 6 of the isolating device.
  • the movable part 6 can be pivoted outwards according to the arrow via a handle 7. During this tilting movement, the fuse 3 is released from the contacts (not shown) on both sides and can be removed without tension. This ensures the function of a fuse switch disconnector.
  • the switch protection devices according to the invention can be used both in installation technology and in industrial technology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

An aim is to make wiring accessories in distribution boards more compact. The aim is achieved by integrating fuses in switching protective devices that are used for functional switching, interrupting, and overload protection such that switching protective devices including fuses can be produced in a housing while short-circuit protection can be coupled to the interruption function if necessary by isolating one fuse from the contact/s.

Description

Beschreibungdescription

Sicherungsbehaftetes SchaltschutzgerätCircuit breaker with fuse

Die vorliegende Erfindung betrifft ein Schaltschutzgerät mit einer Betriebsschalteinrichtung zum Ein- und Ausschalten eines anzusteuernden Geräts, einer Trenneinrichtung zum Trennen einer Eingangsklemme von einer Ausgangsklemme, die mit dem anzusteuernden Gerät verbindbar ist, und einer Schutzeinrich- tung zum Schutz des anzusteuernden Geräts gegen Kurzschluss. Elektronische Schaltgeräte, die als Schaltelemente häufig Silizium-Thyristoren besitzen, können in zwei Gerätearten unterteilt werden: Halbleiterschütze und Sanftstarter. Sanftstarter werden hauptsächlich zum Starten von Motoren verwendet und steuern oder regeln die Spannung während des Anlaufs mittels Phasenanschnittsteuerung. Halbleiterschütze schalten nur ein und aus. Oft werden Halbleiterschütze zum Schalten von ohmschen Lasten, hauptsächlich elektrischen Hei- zungen eingesetzt. Hierzu wird häufig die sogenannte Schwingungspaketsteuerung zur Temperatursteuerung beziehungsweise - regelung verwendet .The present invention relates to a switching protection device with an operating switching device for switching a device to be controlled on and off, a disconnecting device for separating an input terminal from an output terminal, which can be connected to the device to be controlled, and a protective device for protecting the device to be controlled against short circuit. Electronic switching devices, which often have silicon thyristors as switching elements, can be divided into two types of devices: solid-state contactors and soft starters. Soft starters are mainly used to start motors and control or regulate the voltage during start-up using phase control. Solid-state contactors only switch on and off. Semiconductor contactors are often used to switch ohmic loads, mainly electrical heaters. The so-called vibration packet control for temperature control or regulation is often used for this purpose.

Silizium-Thyristoren können einen Kurzschluss nicht aktiv ab- schalten. Deshalb sind entweder Leistungsschalter oder Sicherungen vorzuschalten. Dabei kann der Kurzschlussschutz durch Zuordnungsart 1 oder 2 ausgeführt sein. Gemäß Zuordnungsart 1 wird das Schaltgerät bei Kurzschluss zerstört und muss vollständig ausgetauscht werden. Nach Zuordnungsart 2 ist das Schaltgerät nach einem Kurzschluss weiterhin voll funktionsfähig. Das Schaltgerät bleibt dabei unversehrt. Bei heute üblichen prospektiven Kurzschlussströmen (> 30 kA) kann die Zuordnungsart 2 nur mit speziellen Halbleiterschutzsicherungen realisiert werden. Der Kurzschlussschutz und die Trennerfunk- tion werden gängigerweise in einer dem elektronischen Schaltgerät vor- oder nachgeschalteten Einheit realisiert. Hierzu eignen sich entweder Leistungsschalter oder Sicherungs- lasttrenner mit Sicherungen.Silicon thyristors cannot actively switch off a short circuit. For this reason, either circuit breakers or fuses must be connected upstream. The short-circuit protection can be implemented using coordination type 1 or 2. According to type of coordination 1, the switching device is destroyed in the event of a short circuit and must be replaced completely. According to type of coordination 2, the switching device is still fully functional after a short circuit. The switching device remains intact. With prospective short-circuit currents common today (> 30 kA), type of coordination 2 can only be implemented with special semiconductor protection fuses. The short-circuit protection and the isolator function are usually implemented in a unit upstream or downstream of the electronic switching device. For this either circuit breakers or fuse switch disconnectors with fuses are suitable.

Aus Niederspannungsnetzen wird in der Regel die Leistung über sogenannte „Abzweige" ausgekoppelt. Jeder Abzweig sollte über die Funktionen Verbraucherschalten, Überlastschalten, Trennen, Kurzschlussschutz und Überlastschutz verfügen. Diese Funktionen werden typischerweise von mehreren Einzelgeräten wahrgenommen. Als Ausnahme ist von der Firma Telemecanique ein Gerät bekannt, das elektromechanisch geschaltet wird und über die Funktionen Trennen, Kurzschluss-, Überlastschutz und betriebsmäßiges Schalten verfügt. Ansonsten wird diese Vielzahl von Funktionen durch mindestens zwei Geräte realisiert.The power is usually extracted from low-voltage networks via so-called "branches". Each branch should have the functions of consumer switching, overload switching, disconnection, short-circuit protection and overload protection. These functions are typically performed by several individual devices. One exception is the Telemecanique company known, which is switched electromechanically and has the functions of disconnection, short-circuit, overload protection and operational switching.Otherwise, this multitude of functions is realized by at least two devices.

Bei einem sicherungsbehafteten Abzweig mit einem elektronischen Schaltgerät ohne Überlastschutz muss an die Schaltungsanordnung noch ein Überlastrelais angefügt werden. Bei einem Abzweig mit Leistungsschalter nach Zuordnungsart 2 sind zusätzlich Halbleiterschutzsicherungen vorzusehen. In beiden Fällen sind also insgesamt drei Geräte in Reihe geschaltet. Gerade für Abzweige mit Zuordnungsart 2, d.h. bei denen Sicherungen verwendet werden müssen, ist damit verhältnismäßig großer Bauraum notwendig. Da die Sicherungshalter beziehungsweise Sicherungslasttrenner in aller Regel nicht auf die Bau- breite der elektronischen Schaltgeräte abgestimmt sind, ergibt sich im Schaltschrank keine effiziente Platzausnutzung. Daraus resultieren hohe Kosten für den Schaltschrank und den Raum, in dem der Schaltschrank aufgestellt ist.In the case of a branch with a fuse and an electronic switching device without overload protection, an overload relay must be added to the circuit arrangement. In the case of a branch with circuit breaker according to type of coordination 2, additional semiconductor protection fuses must be provided. In both cases, a total of three devices are connected in series. Especially for branches with type of coordination 2, i.e. where fuses have to be used, relatively large installation space is required. Since the fuse holders or fuse switch disconnectors are generally not matched to the overall width of the electronic switching devices, there is no efficient use of space in the control cabinet. This results in high costs for the control cabinet and the room in which the control cabinet is installed.

Die Aufgabe der vorliegenden Erfindung besteht somit darin, zum Schalten und Schützen von elektrischen Verbrauchern kompaktere Schaltgeräte vorzuschlagen.The object of the present invention is therefore to propose more compact switching devices for switching and protecting electrical consumers.

Erfindungsgemäß wird diese Aufgabe gelöst durch ein Schalt- schutzgerät mit einer Betriebsschalteinrichtung, d.h. einer Schalteinrichtung zum betriebsmäßigen Ein- und Ausschalten eines anzusteuernden Verbrauchers, einer Trenneinrichtung zum Trennen einer Eingangs lemme von einer Ausgangsklemme, die mit dem anzusteuernden Gerät verbindbar ist, und einer Schutzeinrichtung zum Schutz gegen Kurzschluss, wobei die Schutzeinrichtung mindestens eine Sicherung zur Abschaltung im Kurzschlussfall umfasst, und wobei die Betriebsschalteinrichtung, die Trenneinrichtung und die Schutzeinrichtung je Phase in Reihe geschaltet und in ein Gehäuse integriert sind.According to the invention, this object is achieved by a switching protection device with an operating switching device, ie a switching device for the operational switching on and off of a consumer to be controlled, and a disconnecting device for Disconnecting an input terminal from an output terminal, which can be connected to the device to be controlled, and a protective device for protection against short circuit, the protective device comprising at least one fuse for switching off in the event of a short circuit, and the operating switching device, the isolating device and the protective device per phase in series switched and integrated into a housing.

Durch die Integration der mindestens einen Sicherung und der Trenneinrichtung mit Trennereigenschaften in ein Schalt- schutzgerät ergeben sich folgende Vorteile:The integration of the at least one fuse and the isolating device with isolating properties in a circuit breaker has the following advantages:

- Eine optimale Platzausnutzung wird ermöglicht.- An optimal use of space is made possible.

- Alle Komponenten können aufeinander abgestimmt werden. - Es kann eine Einsparung von Verdrahtungsaufwand erzielt werden .- All components can be coordinated. - A saving in wiring effort can be achieved.

- Der logistische Aufwand wird erheblich reduziert, da nur ein Gerät beschafft und gelagert werden muss. Ohne die erfindungsgemäße Integration müssten für die gleiche Funktio- nalität Sicherungslasttrenner, Sicherungen und ein elektronisches Schaltgerät einzeln gehandhabt werden.- The logistical effort is considerably reduced because only one device has to be procured and stored. Without the integration according to the invention, fuse switch disconnectors, fuses and an electronic switching device would have to be handled individually for the same functionality.

Das erfindungsgemäße Schaltschutzgerät kann als Sanftstarter, auch Halbleiter-Motorsteuergerät genannt, oder Halbleiter- schütz ausgestaltet sein. Es kann aber auch als elektromecha- nisches Schaltgerät, z.B. als Schütz realisiert sein.The switching protection device according to the invention can be designed as a soft starter, also called a semiconductor motor control device, or a semiconductor contactor. However, it can also be used as an electromechanical switching device, e.g. be implemented as a contactor.

Vorzugsweise kann die mindestens eine Sicherung aus dem Gehäuse von außen beispielsweise zum Austausch entnommen wer- den. Die mindestens eine Sicherung umfasst vorzugsweise eine Halbleitersicherung oder auch Halbleiterschutzsicherung genannt. Damit kann hinsichtlich eines Kurzschlusses die Zuordnungsart 2 bei elektronischen Schaltstellen erfüllt werden.The at least one fuse can preferably be removed from the outside of the housing, for example for replacement. The at least one fuse preferably comprises a semiconductor fuse or semiconductor protection fuse. With regard to a short circuit, the type of coordination 2 can thus be fulfilled for electronic switching points.

Vorteilhafterweise ist die Schutzeinrichtung zwischen derThe protective device is advantageously between the

Trenneinrichtung und einer Ausgangsklemme zu dem anzusteuernden Gerät angeordnet. Damit ist es möglich, dass bei geöffne- ter Trennstelle ein spannungsloser Sicherungswechsel von außen erfolgen kann.Disconnecting device and an output terminal to the device to be controlled. It is therefore possible that with open a disconnected fuse can be changed from the outside.

Die Trenneinrichtung kann mit der Sicherung kombiniert werden und im offenen Zustand die Sicherung zur Entnahme von mindestens einem Kontakt trennen und freigeben. Dabei ist es günstig, wenn die Sicherung in einem beweglichen Teil der Trenneinrichtung angeordnet ist. Für den beweglichen Teil der Trenneinrichtung kann eine Dreh- oder Schiebemechanik vorge- sehen sein.The disconnecting device can be combined with the fuse and, in the open state, disconnect and release the fuse for removing at least one contact. It is advantageous if the fuse is arranged in a movable part of the separating device. A rotating or sliding mechanism can be provided for the movable part of the separating device.

Vorzugsweise verfügt die Trenneinrichtung über zwei Trennstellen. Ferner kann die Trenneinrichtung die Funktionalität eines Sicherungslasttrenners besitzen.The separation device preferably has two separation points. Furthermore, the disconnecting device can have the functionality of a fuse switch disconnector.

Vorzugsweise sind die Sicherungen als ZylinderSicherungen ausgebildet .The fuses are preferably designed as cylinder fuses.

Darüber hinaus kann eine Überwachungseinrichtung zum Regi- strieren eines Auslösens der mindestens einen Sicherung vorgesehen sein. Damit kann das Auslösen der Sicherung gemeldet und weiter verarbeitet werden.In addition, a monitoring device for registering a tripping of the at least one fuse can be provided. This means that the fuse has been triggered and can be processed further.

Um die Verlustleistung zu reduzieren, können elektronische Schaltstellen mit mechanischen Kontakten überbrückt werden (z.B. Relais oder Schütz).To reduce the power loss, electronic switching points can be bridged with mechanical contacts (e.g. relay or contactor).

Des Weiteren kann in das erfindungsgemäße Schaltschutzgerät eine Überlasteinrichtung insbesondere mit einem thermischen Überlastrelais, z.B. mit Bimetallstreifen oder mit elektronischem Überlastrelais integriert werden. In diesem Fall können zur Strommessung Stromwandler verwendet werden. Mit dem Stromsignal kann dann der Überlastschutz realisiert werden.Furthermore, an overload device, in particular with a thermal overload relay, e.g. can be integrated with a bimetal strip or with an electronic overload relay. In this case, current transformers can be used to measure the current. Overload protection can then be implemented with the current signal.

Das erfindungsgemäße Schaltschutzgerät beziehungsweise die gesamte Abzweigschaltung kann in ein Aufbau- und Verdrahtungssystem eingebunden sein, wobei ein Austausch des kom- pletten Geräts durch Stecktechnik möglich ist. Dadurch wird der Aufwand beim Wechseln eines Geräts auf ein Minimum reduziert. Das Gerät sollte dabei jedoch lediglich in Ausstellung steckbar sein. Dies kann beispielsweise durch eine mechanische Verriegelung des Sicherungslasttrenners mit dem „Grundträger" erfolgen, d.h. das Gerät kann nur bei geöffnetem Sicherungslasttrenner ausgetauscht werden.The switch protection device according to the invention or the entire branch circuit can be integrated into a construction and wiring system, with an exchange of the complete complete device is possible through plug technology. This reduces the effort when changing a device to a minimum. However, the device should only be pluggable in the exhibition. This can be done, for example, by mechanically locking the fuse switch disconnector with the "base support", ie the device can only be replaced when the fuse switch disconnector is open.

Der Abzweig kann 1- oder 3-polig ausgeführt sein. Bei 3- poligen Geräten können auch nur zwei Strombahnen geschaltet werden, d.h. mit Schaltelementen versehen sein.The branch can be 1 or 3 poles. With 3-pole devices, only two current paths can be switched, i.e. be provided with switching elements.

Die Erfindung wird nun anhand der beigefügten Zeichnungen näher erläutert, in denen zeigen:The invention will now be explained in more detail with reference to the accompanying drawings, in which:

FIG 1 ein Schaltbild eines „geschlossenen" Verbraucherabzweigs mit elektronischer Schaltstelle ohne Überlastschutz; FIG 2 ein Schaltbild eines „offenen" Verbraucherabzweigs mit elektronischer Schaltstelle ohne Überlastschutz und mit einer Trennstelle; FIG 3 ein Schaltbild eines „offenen" Verbraucherabzweigs mit elektronischer Schaltstelle mit Überlastschutz und mit zwei Trennstellen; FIG 4 ein Schaltbild eines „offenen" Verbraucherabzweigs mit mechanischer Schaltstelle mit Überlastschutz und mit einer Trennstelle; und FIG 5 eine perspektivische Ansicht eines erfindungsgemäßen Schaltschutzgeräts.1 shows a circuit diagram of a "closed" load feeder with electronic switching point without overload protection; FIG. 2 shows a circuit diagram of an "open" load feeder with electronic switch point without overload protection and with a disconnection point; 3 shows a circuit diagram of an "open" load feeder with electronic switching point with overload protection and with two disconnection points; FIG. 4 shows a circuit diagram of an "open" load feeder with mechanical switch point with overload protection and with a separation point; and FIG. 5 shows a perspective view of a switching protection device according to the invention.

Die nachfolgend näher erläuterten Ausführungsbeispiele stellen bevorzugte Ausführungsformen der vorliegenden Erfindung dar.The exemplary embodiments explained in more detail below represent preferred embodiments of the present invention.

Das in FIG 1 wiedergegebene erfindungsgemäße Schaltschutzgerät 1 dient zum Schalten einer 1- oder 3-poligen Leitung. Für eine 3-polige Leitung ist entsprechend ein 3-poliges Gerät bestehend aus drei Strombahnen zu bilden.The switch protection device 1 according to the invention shown in FIG. 1 is used to switch a 1 or 3-pole line. For a 3-pole cable must be a 3-pole device consisting of three current paths.

Das Schaltschutzgerät 1 besitzt vereinfacht ein elektrisches Schaltgerät 2 und in Reihe damit verbunden eine Sicherung 3. In der dargestellten Schaltung auf der linken Seite von FIG 1 ist die Sicherung in der geschlossenen Schaltung wiedergegeben. In FIG 2 ist die Sicherung 3 in der offenen Stellung dargestellt. In dieser Stellung ist der nicht dargestellte Stromkreis von einem Spannungsnetz zu einem Verbraucher unterbrochen. Falls durch diese Trennung die geforderten Luft- und Kriechstrecken eingehalten sind, kann von einer normierten Trennereigenschaft gesprochen werden. Falls beide Anschlüsse der Sicherung von dem Stromkreis abgetrennt sind, liegt eine doppelte Trennstelle vor. Damit ist es in jedem Fall 'möglich, die Sicherung 3 spannungsfrei auszutauschen.The switching protection device 1 has, in a simplified manner, an electrical switching device 2 and a fuse 3 connected in series therewith. In the circuit shown on the left side of FIG. 1, the fuse is shown in the closed circuit. In Figure 2, the fuse 3 is shown in the open position. In this position, the circuit, not shown, is interrupted by a voltage network to a consumer. If the required air and creepage distances are maintained due to this separation, one can speak of a standardized separation property. If both connections of the fuse are disconnected from the circuit, there is a double disconnection point. Thus, it is in any case 'possible to replace the fuse 3-energized.

In FIG 3 ist eine weitere Alternative eines erfindungsgemäßen, kompakten Schaltschutzgeräts wiedergegeben. In der Dar- Stellung ist die Sicherung 3 an zwei Trennstellen vomFIG. 3 shows another alternative of a compact switching protection device according to the invention. In the illustration, fuse 3 is at two separation points from

Strompfad getrennt. Somit kann die Sicherung 3 spannungsfrei aus dem Schaltschutzgerät 1 entnommen werden. Nach dem Schaltgerät 2, das auch hier als Thyristor wiedergegeben ist, ist in dem Schaltschutzgerät 1 eine Überlasteinrichtung zum Schutz gegen Überlast angeordnet.Current path separated. The fuse 3 can thus be removed from the switching protection device 1 without voltage. After the switching device 2, which is also shown here as a thyristor, an overload device for protection against overload is arranged in the switching protection device 1.

Eine weitere Ausführungsform eines Schaltschutzgeräts gemäß der vorliegenden Erfindung ist in FIG 4 dargestellt. Gegenüber der Ausführungsform von FIG 3 ist hier an der Sicherung 3 lediglich eine Trennstelle vorgesehen. Damit befindet sich die Sicherung 3 beim Entnehmen, d.h. wenn der Verbraucherabzweig offen ist, unter Umständen in einem nicht spannungsfreien Zustand. In der Ausführungsform von FIG 4 ist das elektronische Schaltgerät 2 von FIG 3 durch einen mechani- sehen Schalter ersetzt. Damit wird ersichtlich, dass die einzelnen im Zusammenhang mit den Figuren 1 bis 4 dargestellten Komponenten in den Schaltschutzgeräten auf beliebige Art kombiniert werden können.Another embodiment of a switching protection device according to the present invention is shown in FIG. Compared to the embodiment in FIG. 3, only one separation point is provided on fuse 3. The fuse 3 is thus in a not de-energized state when removed, ie when the load feeder is open. In the embodiment of FIG. 4, the electronic switching device 2 of FIG. 3 is replaced by a mechanical switch. It can be seen that the individual shown in connection with Figures 1 to 4 Components in the switch protection devices can be combined in any way.

FIG 5 zeigt ein Schaltschutzgerät 1 in perspektivischer An- sieht. Es besitzt Eingangsklemmen 4 und Ausgangsklemmen 5. Die Sicherung 3 ist in einem beweglichen Teil 6 der Trennereinrichtung untergebracht. Über einen Handgriff 7 kann das bewegliche Teil 6 gemäß dem Pfeil nach außen geschwenkt werden. Bei dieser Kippbewegung wird die Sicherung 3 von den Kontakten (nicht dargestellt) an beiden Seiten gelöst und kann spannungsfrei entnommen werden. Damit ist die Funktion eines Sicherungslasttrenners gewährleistet.5 shows a switching protection device 1 in perspective view. It has input terminals 4 and output terminals 5. The fuse 3 is accommodated in a movable part 6 of the isolating device. The movable part 6 can be pivoted outwards according to the arrow via a handle 7. During this tilting movement, the fuse 3 is released from the contacts (not shown) on both sides and can be removed without tension. This ensures the function of a fuse switch disconnector.

Die erfindungsgemäßen Schaltschutzgeräte können sowohl in der Installationstechnik als auch in der Industrietechnik Verwendung finden. The switch protection devices according to the invention can be used both in installation technology and in industrial technology.

Claims

Patentansprüche claims 1. Schaltschutzgerät mit1. Switch protection device with - einer Betriebsschalteinrichtung (2) zum Ein- und Ausschal - ten einer Verbraucherlast,- an operating switching device (2) for switching a load on and off, - einer Trenneinrichtung zum Trennen einer Eingangs lemme von einer Ausgangsklemme, die mit dem anzusteuernden Gerät verbindbar ist, und- A separating device for separating an input terminal from an output terminal, which can be connected to the device to be controlled, and - einer Schutzeinrichtung zum Schutz des anzusteuernden Ge- räts gegen Kurzschluss d a d u r c h g e k e n n z e i c h n e t, d a s s- a protective device to protect the device to be controlled against short-circuit d a d u r c h g e k e n n z e i c h n e t, d a s s - die Schutzeinrichtung je Phase eine Sicherung (3) zur Abschaltung im Kurzschlussfall umfasst, wobei die Betriebsschalteinrichtung, die Trenneinrichtung und die Schutzein- richtung in Reihe geschaltet und in ein Gehäuse integriert sind.- The protective device includes a fuse (3) for disconnection in the event of a short circuit in each phase, the operating switching device, the isolating device and the protective device being connected in series and integrated in a housing. 2. Schaltschutzgerät nach Anspruch 1, das als Halbleiter- Motorsteuergerät, Halbleiterschütz oder elektromechanisches Schaltgerät ausgestaltet ist.2. Switch protection device according to claim 1, which is designed as a semiconductor motor control device, semiconductor contactor or electromechanical switching device. 3. Schaltschutzgerät nach Anspruch 1 oder 2, wobei die mindestens eine Sicherung (3) aus dem Gehäuse entnehmbar ist.3. Switch protection device according to claim 1 or 2, wherein the at least one fuse (3) can be removed from the housing. 4. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Sicherung (3) eine Halbleiter- schutzsicherung umfasst.4. Switch protection device according to one of the preceding claims, wherein the at least one fuse (3) comprises a semiconductor protection fuse. 5. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die Schutzeinrichtung zwischen der Trenneinrichtung und einer Ausgangsklemme zu dem anzusteuernden Gerät angeordnet ist .5. Switch protection device according to one of the preceding claims, wherein the protective device is arranged between the separating device and an output terminal to the device to be controlled. 6. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die Trenneinrichtung im offenen Zustand die mindestens eine Sicherung (3) zur Entnahme von mindestens einem Kontakt trennt und freigibt . 6. Switch protection device according to one of the preceding claims, wherein the disconnecting device in the open state disconnects and releases the at least one fuse (3) for removing at least one contact. 7. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei das Öffnen und Schließen der Trenneinrichtung durch eine Dreh- oder Schiebemechanik ausführbar ist.7. Switch protection device according to one of the preceding claims, wherein the opening and closing of the separating device can be carried out by a rotating or sliding mechanism. 8. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Sicherung (3) als Zylindersicherung ausgebildet ist .8. Switch protection device according to one of the preceding claims, wherein the at least one fuse (3) is designed as a cylinder fuse. 9. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die Trenneinrichtung die Funktionalität eines Sicherungslasttrenners besitzt.9. Switchgear protection device according to one of the preceding claims, wherein the separating device has the functionality of a fuse switch disconnector. 10. Schaltschutzgerät nach einem der vorhergehenden Ansprü- ehe, wobei die Trenneinrichtung zwei Trennstellen besitzt.10. Switchgear protection device according to one of the preceding claims, the separating device having two separating points. 11. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei die mindestens eine Sicherung (3) in einem beweglichen Teil (6) der Trenneinrichtung angeordnet ist.11. Switch protection device according to one of the preceding claims, wherein the at least one fuse (3) is arranged in a movable part (6) of the separating device. 12. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, das eine Überwachungseinrichtung zum Registrieren eines Auslösens der mindestens einen Sicherung (3) aufweist.12. Switch protection device according to one of the preceding claims, which has a monitoring device for registering a triggering of the at least one fuse (3). 13. Schaltschutzgerät nach einem der vorhergehenden Ansprüche, wobei elektronische Schaltstellen mit mechanischen Kontakten überbrückbar sind.13. Switch protection device according to one of the preceding claims, wherein electronic switching points with mechanical contacts can be bridged. 14. Schaltschutzgerät nach einem der vorhergehenden Ansprü- ehe, das eine Überlasteinrichtung aufweist.14. Switch protection device according to one of the preceding claims, which has an overload device. 15. Schutzschaltvorrichtung nach Anspruch 14, wobei die Überlasteinrichtung ein Überlastrelais besitzt.15. The protective switching device according to claim 14, wherein the overload device has an overload relay. 16. Schaltschutzgerät mit drei Strombahnen nach einem der vorhergehenden Ansprüche für drei-polige Geräte, wobei minde- stens eine der Strombahnen ohne Betriebsschalteinrichtung ausgeführt ist. 16. Switchgear protection device with three current paths according to one of the preceding claims for three-pole devices, where at least least one of the current paths is designed without an operating switching device.
EP04731929A 2003-07-25 2004-05-10 Circuit breaker comprising a fuse Expired - Lifetime EP1685578B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10334069A DE10334069A1 (en) 2003-07-25 2003-07-25 Fused switchgear
PCT/EP2004/004990 WO2005020259A1 (en) 2003-07-25 2004-05-10 Switching protective device comprising fuses

Publications (2)

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EP1685578A1 true EP1685578A1 (en) 2006-08-02
EP1685578B1 EP1685578B1 (en) 2012-04-25

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US (1) US20070109704A1 (en)
EP (1) EP1685578B1 (en)
CN (1) CN100524562C (en)
AT (1) ATE555489T1 (en)
DE (1) DE10334069A1 (en)
DK (1) DK1685578T3 (en)
WO (1) WO2005020259A1 (en)

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DE10334069A1 (en) 2005-03-03
DK1685578T3 (en) 2012-07-30
WO2005020259A1 (en) 2005-03-03
CN1826675A (en) 2006-08-30
EP1685578B1 (en) 2012-04-25
ATE555489T1 (en) 2012-05-15
US20070109704A1 (en) 2007-05-17

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