CH625644A5 - Residual current device - Google Patents

Residual current device Download PDF

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Publication number
CH625644A5
CH625644A5 CH1603577A CH1603577A CH625644A5 CH 625644 A5 CH625644 A5 CH 625644A5 CH 1603577 A CH1603577 A CH 1603577A CH 1603577 A CH1603577 A CH 1603577A CH 625644 A5 CH625644 A5 CH 625644A5
Authority
CH
Switzerland
Prior art keywords
voltage
conductor
neutral conductor
circuit breaker
neutral
Prior art date
Application number
CH1603577A
Other languages
German (de)
Inventor
Friedrich Lauerer
Original Assignee
Friedrich Lauerer
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 Friedrich Lauerer filed Critical Friedrich Lauerer
Publication of CH625644A5 publication Critical patent/CH625644A5/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/347Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/001Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect or interrupted earth connection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

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

Description

625 644 625 644

2 2

Claims (3)

PATENTANSPRÜCHE überwacht wird. Nachteilig bei diesem Vorschlag ist der relativPATENT CLAIMS is monitored. The disadvantage of this proposal is the relative 1. Fehlerstrom-Schutzschalter, bei dem der Nulleiter als hohe Aufwand, insbesondere die Notwendigkeit einen eigenen Schutzleiter vorgesehen ist, dadurch gekennzeichnet, dass Mit- Hilfserder zu installieren. Fehlt dieser Hilfserder, ist seine tel vorgesehen sind, die eine Abschaltung bewirken, wenn die Zuleitung unterbrochen oder ist er elektrisch zu stark mit dem Spannung zwischen dem Schutzleiter und einem Aussenleiter s Nulleiter gekoppelt (Hilfserder im Spannungstrichter oder höher ist als die Spannung des Aussenleiters gegen Erde. Überbrückung des Fehlerspannungsrelais), dann ist die Schutz-1. Residual current circuit breaker, in which the neutral conductor is provided as a high effort, especially the need to have its own protective conductor, characterized in that with auxiliary earth electrode to install. If this auxiliary earth electrode is missing, its parts are provided, which cause a shutdown if the supply line is interrupted or it is electrically coupled too strongly with the voltage between the protective conductor and an outer conductor s neutral conductor (auxiliary earth electrode in the voltage funnel or is higher than the voltage of the outer conductor against earth, bridging the error voltage relay), then the protective 2. Fehlerstrom-Schutzschalter nach Patentanspruch 1, Wirkung in Frage gestellt.2. Residual current circuit breaker according to claim 1, effect questioned. dadurch gekennzeichnet, dass zwischen dem Nulleiter und min- Es ist das Ziel der vorliegenden Erfindung, die erwähnten destens zwei Aussenleitern je ein spannungsabhängiger Wider- Nachteile zu beseitigen. Sie geht von einem Fehlerstromstand (1 und 2) liegt, dessen Zuleitung (3 und 4) durch den Sum- io Schutzschalter (kurz: Fl-Schalter) aus, bei dem der Nulleiter als menstromwandler (5) führt. Schutzleiter verwendet wird und ist dadurch gekennzeichnet,characterized in that between the neutral conductor and min- It is the aim of the present invention to eliminate the mentioned at least two outer conductors each having a voltage-dependent disadvantage. It is based on a residual current level (1 and 2) whose supply lines (3 and 4) run through the Sum-io circuit breaker (short: Fl switch), in which the neutral conductor leads as a volume current transformer (5). protective conductor is used and is characterized 3. Fehlerstrom-Schutzschalter nach den Patentansprüchen dass Mittel vorgesehen sind, die eine Abschaltung bewirken, 1 und 2, dadurch gekennzeichnet, dass in Reihe zu jedem span- wenn die Spannung zwischen dem Nulleiter als Schutzleiter nungsabhängigen Widerstand (1 und 2) je ein stromanstieg- und einem Aussenleiter höher ist als die Spannung des Aussen-dämpfendes Bauelement, vorzugsweise ein Heissleiter (6 und 7) 15 leiters gegen Erde.3. Residual current circuit breaker according to claims that means are provided which cause a shutdown, 1 and 2, characterized in that in series with each voltage-dependent resistor (1 and 2) when the voltage between the neutral conductor as the protective conductor voltage-dependent current increase - And an outer conductor is higher than the voltage of the externally damping component, preferably a thermistor (6 and 7) 15 conductor to earth. liegt. Eine Weiterausbildung der Erfindung wird z. B. dadurch realisiert, dass zwischen dem Nulleiter und mindestens zwei der drei Aussenleiter je ein spannungsabhängiger Widerstand liegt,lies. A further development of the invention is z. B. realized in that there is a voltage-dependent resistor between the neutral conductor and at least two of the three outer conductors, dessen Zuleitung durch den Summenstromwandler führt.whose supply leads through the summation current transformer. 20 Damit kurzzeitige Spannungserhöhungen (z. B. bei Nach-barkurzschluss oder bei Gewittereinwirkungen) zu keinen Die Anwendung des Fehlerstromschutzschalters erfordert unnötigen Abschaltungen führen, ist in der weiteren Ausgestal-in manchen Ländern einen eigenen Erder. Die Erfüllung dieser tung der Erfindung in Reihe zu jedem spannungsabhängigen Bedingung ist mit einem Aufwand verbunden. Gleichzeitig Widerstand ein stromanstiegdämpfendes Bauelement, vorzugsbedeutet die Schaffung und die Existenz des Erders mitsamt 25 weise ein Heissleiter geschaltet.20 To ensure that short-term voltage increases (e.g. in the event of a short-circuit in the neighborhood or the effects of thunderstorms) do not lead to unnecessary disconnections, some countries require their own earth electrode. Fulfillment of this feature of the invention in series with each voltage-dependent condition is associated with an effort. At the same time, resistance is a component that dampens the rise in current, preferably means the creation and existence of the earth electrode, together with a thermistor connected. der Zuleitung ein Risiko bei der Installation bzw. während der In der Zeichnung ist ein Ausführungsbeispiel der Erfindung langen Betriebszeit; denn Installations- oder/und Betriebsfehler wiedergegeben.the supply line poses a risk during installation or during the long service life; because installation and/or operating errors are reproduced. können nicht nur die Wirkungslosigkeit der Berührungsschutz- Der Drehstrom-Netztransformator T versorgt über die massnahme, sondern auch die Übertragung der Netzspannung Zuleitungen den Wechselstromverbraucher mit dem Wider-über den Schutzleiter zu den Metallgehäusen der Verbrauchs- 30 stand Rw- Das Metallgehäuse des Verbrauchsgerätes M ist geräte zur Folge haben und auf diese Weise Unfälle auslösen. über den Schutzleiter SL(= Strecke 13-11-12) mit dem Nullei-not only can the ineffectiveness of the contact protection The three-phase mains transformer T supplies the measure, but also the transmission of the mains voltage supply lines to the alternating current consumer with the counter-via the protective conductor to the metal housing of the consumer 30 stand Rw- The metal housing of the consumer device M is equipment and thus cause accidents. via the protective conductor SL (= line 13-11-12) with the neutral Eigentlich steht je beim FI-Schutzschalter ein Erder zur ter(= Strecke 12-8-9) verbunden.Actually, there is a grounder connected to the ter (= line 12-8-9) for each residual current circuit breaker. Verfügung und er ist sogar bezüglich der Qualität des Erdungs- Es sind zwei spannungsabhängige Widerstände (1 und 2) Widerstandes, der Störarmut und der Zugänglichkeit jedem einerseits am Nulleiter (12) und andererseits an je einem Aus-Einzelerder um ein Vielfaches überlegen. Gemeint ist der im 35 senleiter (14 und 15) angeschlossen, wobei die Leitungsführung Netz mehrfach geerdete Mittel- bzw. Nulleiter. Die erwähnten durch den Summenstromwandler 5 (durch 3 und 4 angedeutet) Vorteile und die Kostenersparnis, die die Verwendung des Null- erfolgt.available and it is even far superior to any one on the one hand on the neutral conductor (12) and on the other hand on a single off earth electrode in terms of the quality of the grounding resistance, the low level of interference and the accessibility. What is meant is the 35 sen conductor (14 and 15) connected, whereby the mains line routing has a middle or neutral conductor that is earthed several times. The advantages mentioned by the summation current transformer 5 (indicated by 3 and 4) and the cost savings that take place using the zero-. leiters als Erder mit sich bringen, führten in manchen Ländern Die spannungsabhängigen Widerstände (1 und 2) haben bei dazu, diese Installationsweise zuzulassen. In anderen Ländern 220/380-Volt-Anlagen im Bereich bis etwa 280 V eff. einen relativ wird diese Installationsweise nicht zugelassen, weil damit 40 hohen Widerstand. Wird die angelegte Spannung höher, so bestimmte Gefahren verbunden sind. Treten nämlich vor dem sinkt der Widerstandswert so weit herab, dass durch ihn ein Schutzschalter bestimmte Installationsfehler (Aussenleiter- Strom zum Fliessen kommt, der höher ist als der Fehlernenn-Nulleiter-Vertauschung im Netz bzw. im Bereich Hausan- ström des FI-Schalters. Die Folge ist, dass der Fl-Schalter schlusssicherung bis zum Schutzschalter oder Nichtanschluss abschaltet.The voltage-dependent resistors (1 and 2) have led to permitting this type of installation in some countries. In other countries, 220/380 volt systems in the range up to around 280 V eff. relatively this way of installation is not allowed, because with it 40 high resistance. If the applied voltage is higher, then certain hazards are involved. If you step in front of the , the resistance value drops so low that a circuit breaker certain installation errors (outer conductor current that is higher than the nominal error-neutral conductor transposition in the network or in the area of the house inrush current of the residual current circuit breaker starts to flow. The consequence is that the Fl switch switches off short-circuit protection up to the circuit breaker or non-connection. des Mittelleiters oder Nulleiters in den erwähnten Leitungsbe- 45 Eine erhöhte und damit gefährliche Spannung gelangt stets reichen) oder Betriebsfehler (Nulleiterunterbrechung in den dann an einen der beiden spannungsabhängigen Widerstände erwähnten Leitungsbereichen) auf, dann wird die volle Netz- (1 und 2), wenn einer der bereits erwähnten Fehler auftritt, Spannung über den Schutzleiter auf sämtliche metallenen Ver- wenn also vor dem Fl-Schalter der Nulleiter mit einem Aussen-brauchsgerätegehäuse übertragen, ohne dass der Fl-Schalter leiter vertauscht wird (16 wird mit 8, statt mit 17, und 9 mit 17, die Stromzufuhr unterbrechen kann. 50 statt mit 8 verbunden), was z. B. beim Dachständer, bei derof the center conductor or neutral conductor in the line areas mentioned 45 An increased and therefore dangerous voltage always reaches) or operating error (neutral conductor interruption in the line areas then mentioned at one of the two voltage-dependent resistors), then the full mains (1 and 2), if one of the faults already mentioned occurs, voltage is transferred via the protective conductor to all metal conductors, i.e. if the neutral conductor in front of the FI switch is connected to an outdoor appliance housing without the FI switch being swapped (16 is replaced with 8 instead of with 17, and 9 connected to 17, which can interrupt the power supply (50 instead of connected to 8), which e.g. B. the roof stand, at the Die Folge sind Personenunfälle, die zwar relativ selten vor- Hausanschlusssicherung oder bei der Verteilung irrtümlich kommen; dazu kommen jedoch Rinderunfälle in den Iandwirt- geschehen kann - oder wenn der Nulleiter (im Streckenab-schaftlichen Betrieben, die zahlenmässig wesentlich höher lie- schnitt 8 bis 9) eine Unterbrechung erfährt, z. B. durch Freilei-gen. tungsbruch oder bei Nichtanschluss des Nulleiters. Bei all die-The consequences are personal accidents, which occur relatively rarely. In addition, however, cattle accidents can happen in the farmer - or if the neutral conductor (in remote farms, the number of which is significantly higher than 8 to 9) experiences an interruption, e.g. B. by Freilei-gen. rupture or if the neutral conductor is not connected. With all the- Es ist eine Lösung dieses Problems bekannt, bei der die 55 sen Fehlerfällen erfolgt durch die erfindungsgemässe Schal-Spannungsfreiheit des Nulleiters mit Hilfe eines zusätzlich im tung eine Abschaltung und damit eine Beseitigung der Berüh-Fehlerstromschutzschalter eingebauten Fehlerspannungsrelais rungsgefahr.There is a known solution to this problem, in which the 55 sen error cases is carried out by the inventive switching voltage freedom of the neutral conductor with the help of an additional device in the device a shutdown and thus eliminating the built-in residual voltage relay risk of contact. 1 Blatt Zeichnungen1 sheet of drawings
CH1603577A 1977-01-04 1977-12-27 Residual current device CH625644A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772700145 DE2700145C2 (en) 1977-01-04 1977-01-04 Residual current protection circuit

Publications (1)

Publication Number Publication Date
CH625644A5 true CH625644A5 (en) 1981-09-30

Family

ID=5998105

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1603577A CH625644A5 (en) 1977-01-04 1977-12-27 Residual current device

Country Status (2)

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CH (1) CH625644A5 (en)
DE (1) DE2700145C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2077531B (en) * 1980-06-04 1983-06-08 Evans Jacob Donald Fault detection in n-phase system
DE3134924A1 (en) * 1981-09-03 1983-03-17 Siemens AG, 1000 Berlin und 8000 München Fault current protection device
DE3431581A1 (en) * 1984-08-28 1986-03-20 Friedrich Dipl.-Ing. 8033 Krailling Lauerer Electrical circuit breaker
DE102004023202B4 (en) * 2004-05-11 2007-10-18 Siemens Ag Device and method for uninterrupted testing of a residual current circuit breaker
AT510534A1 (en) * 2010-10-04 2012-04-15 Eaton Gmbh DETECTOR UNIT FOR DETECTING A NEUTRAL LINE INTERRUPTED IN A SYMMETRIC MULTI-PHASE POWER NETWORK

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123752B (en) * 1959-11-23 1962-02-15 Felten & Guilleaume Carlswerk Zeroing protection switch with neutral voltage release
DE1188706B (en) * 1961-03-01 1965-03-11 Schutzapp Ges Paris & Co M B H Circuit breaker using a residual current circuit breaker with a summation current transformer

Also Published As

Publication number Publication date
DE2700145A1 (en) 1978-07-13
DE2700145C2 (en) 1985-12-05

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