DE1053080B - Residual current circuit breaker - Google Patents

Residual current circuit breaker

Info

Publication number
DE1053080B
DE1053080B DEF16754A DEF0016754A DE1053080B DE 1053080 B DE1053080 B DE 1053080B DE F16754 A DEF16754 A DE F16754A DE F0016754 A DEF0016754 A DE F0016754A DE 1053080 B DE1053080 B DE 1053080B
Authority
DE
Germany
Prior art keywords
circuit breaker
current circuit
residual current
voltage
fault
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.)
Pending
Application number
DEF16754A
Other languages
German (de)
Inventor
Horst Zielasko
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk 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 Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Priority to DEF16754A priority Critical patent/DE1053080B/en
Publication of DE1053080B publication Critical patent/DE1053080B/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency 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
    • H02H3/32—Emergency 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
    • H02H3/34—Emergency 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
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit

Description

Die Erfindung betrifft einen Fehlerstromschutzschalter für Drehstromnetze zum Schutze gegen Schäden durch Berührung eines infolge Isolationsfehlers spannungführend gewordenen elektrischen Gerätes, wobei der in einem DifFerentiaItransformator bei Auftreten eines Fehlers entstehende Fehlerstrom ein mit Lichtbogenentladung arbeitendes Röhrenrelais steuert. Zur Stabilisierung der Gitterspannung der Röhre sind Schaltungen mit einer Stabilisatorröhre bekannt.The invention relates to a fault current circuit breaker for three-phase networks to protect against damage caused by touching an electrical device that has become live as a result of an insulation fault, the fault current occurring in a differential transformer when a fault occurs controls a tube relay operating with an arc discharge. Circuits with a stabilizer tube are known for stabilizing the grid voltage of the tube.

Diese Stabilisierungsschaltungen lassen sich vermeiden, wenn gemäß der Erfindung die Betriebsspannung mittels Spartransformatoren und vorgeschalteten Kondensatoren und nachgeschalteten Gleichrichtern, die in an sich bekannter Weise in Stern geschaltet sind und in der Mittelanzapfung des Spartransformators liegen, aus den drei Phasen des Netzes entnommen sind. Man hat auch schon daran gedacht, die Spannung mittels Spartransformatoren aus dem Netz zu entnehmen. Diese Schaltung besitzt jedoch wegen des dauernden Leistungsverlustes gewisse Nachteile. Durch Verwendung von Spartransformatoren zusammen mit den vorgeschalteten Kondensatoren erreicht man, wenn die Kapazität der Kondensatoren mit der Induktivität der Transformatorwicklungen auf Resonanz abgestimmt ist, daß auch bei sehr starker Absenkung der Netzspannung noch eine genügend hohe Spannung für die Versorgung des Röhrenrelais vorhanden ist.These stabilization circuits can be avoided if, according to the invention, the operating voltage by means of autotransformers and upstream capacitors and downstream rectifiers, which are star-connected in a manner known per se and in the center tap of the autotransformer are taken from the three phases of the network. One has already thought of that Voltage can be taken from the network by means of autotransformers. However, this circuit has because of the permanent loss of performance certain disadvantages. By using autotransformers together with the upstream capacitors one reaches when the capacitance of the capacitors with the inductance of the transformer windings is tuned to resonance that even with very strong If the mains voltage is reduced, the voltage is still high enough to supply the tube relay is available.

Es ist ferner zweckmäßig, dem Gitter aus dem Netz eine Vorspannung zuzuführen, so daß der Differenztransformator nur noch eine geringe Zusatzspannung zu geben braucht, die notwendig ist, um die Röhre zum Zünden zu bringen.It is also useful to apply a bias voltage to the grid from the network, so that the differential transformer only needs to give a small additional voltage, which is necessary for the tube to ignite.

Die Vorteile der Erfindung werden an Hand der Figur erläutert:The advantages of the invention are explained using the figure:

Im Zuge der drei Phasen U, V, W und des Nullleiters 0 liegen der Differentialtransformator 1 und der Schutzschalter 2. Das Röhrenrelais besteht aus der Röhre 3 mit kalter Kathode 4 und dem Auslöseschalter 5. Die Spannung für die Röhre wird über die Spartransformatoren 12 mit den vorgeschalteten Kondensatoren 13 und die in Stern geschalteten Gleichrichter 6 den drei Phasen des Netzes entnommen. Zur Einstellung der Anodenspannung und damit zur Einstellung des Fehlerstrombereiches dienen die beiden Widerstände 14 und 15, von denen der Widerstand 15 regelbar ist. Die Verbindung der beiden Widerstände geschieht hierbei über den beweglichen Kontakt 16, der seinerseits auch über die Sekundärwicklung 8 des Differentialtransformators 1 mit dem Gitter 17 der Röhre 3 verbunden ist. Auf diese Weise bekommt das Gitter eine von dem aus den Widerständen 14 und 15 gebildeten Spannungsteiler abhängige Vorspannung.The differential transformer 1 and the circuit breaker 2 lie in the course of the three phases U, V, W and the neutral conductor 0 the upstream capacitors 13 and the star-connected rectifier 6 taken from the three phases of the network. The two resistors 14 and 15, of which the resistor 15 can be regulated, are used to set the anode voltage and thus to set the fault current range. The two resistors are connected via the movable contact 16, which in turn is also connected to the grid 17 of the tube 3 via the secondary winding 8 of the differential transformer 1. In this way, the grid is given a bias voltage that is dependent on the voltage divider formed by the resistors 14 and 15.

Die Aufteilung des Spannungsteilers in den festen FehlerstromschutzschalterThe division of the voltage divider into the fixed residual current circuit breaker

Anmelder:Applicant:

Feiten & Guilleaume Carlswerk
Aktiengesellschaft,
Köln-Mülheim, Schanzenstr. 24/28Feiten & Guilleaume Carlswerk
Corporation,
Cologne-Mülheim, Schanzenstr. 24/28

Horst Zielasko1 Einswarden,
ist als Erfinder genannt wordenHorst Zielasko 1 Einswarden,
has been named as the inventor

Widerstand 14 und den eigentlichen Spannungsteiler 15 in der angegebenen Schaltungsweise hat folgenden Grund: Es kann z.B. vorkommen, daß sich der bewegliche Kontakt 16 etwas abhebt oder verschmutzt, so daß eine einwandfreie Kontaktgabe nicht mehr gewährleistet ist. In diesem Falle würde der Schutzschalter unbrauchbar, da dann die Röhre keine Gittervorspannung bekäme und so nicht zünden könnte. Diese Fehlermöglichkeit wird durch die beschriebene Schaltungsart des Spannungsteilers vermieden. Wenn nämlich nunmehr die Kontaktgabe an dem Kontakt 16 schlecht oder völlig unterbunden wird, liegt eine größere Spannung bzw. die gesamte Netzspannung an der Anode der Röhre, die sie zum Zünden bringt, so daß der Schutzschalter die Netzleitungen auftrennt. Die schlechte Kontaktgabe wird also hierdurch im Gerät angezeigt und somit verhindert, daß der Schutzschalter bei Auftreten einer gefährlichen Berührungsspannung nicht abschalten würde.Resistor 14 and the actual voltage divider 15 in the specified circuit has the following Reason: It can happen, for example, that the movable contact 16 lifts off or becomes dirty, so that perfect contact is no longer guaranteed. In this case the circuit breaker would unusable, since the tube would then not receive any grid tension and so could not ignite. This possibility of error is avoided by the circuit type of the voltage divider described. if namely, the making of contact at the contact 16 is now poorly or completely prevented, is one higher voltage or the total mains voltage at the anode of the tube, which causes it to ignite, so that the circuit breaker disconnects the power lines. The poor contact is thus in the device displayed and thus prevents the circuit breaker from being activated if dangerous contact voltage occurs wouldn't turn off.

Claims (1)

Patentansprüche ·.
1. Fehlerstromschutzschalter für Drehstromnetze zum Schutze gegen Schäden durch Berührung eines infolge Isolationsfehlers spannungführend gewordenen elektrischen Gerätes, wobei der in einem Differentialtransformator bei Auftreten eines Fehlers entstehende Fehlerstrom ein mit Lichtbogenentladung arbeitendes Röhrenrelais steuert, dadurch gekennzeichnet, daß die Betriebsspannung mittels Spartransformatoren (12) und vorgeschalteten Kondensatoren (13) und nachgeschalteten Gleichrichtern (6), die in an sich bekannter Weise in Stern geschaltet sind und in der Mittelanzapfung des Spartransformators liegen, aus den drei Phasen des Netzes entnommen sind. Claims ·.
1. Residual current circuit breaker for three-phase networks to protect against damage caused by contact with an electrical device that has become live as a result of an insulation fault, the fault current arising in a differential transformer when a fault occurs controls a tube relay operating with an arc discharge, characterized in that the operating voltage by means of autotransformers (12) and upstream Capacitors (13) and downstream rectifiers (6), which are star-connected in a manner known per se and are located in the center tap of the autotransformer, are taken from the three phases of the network. 309 770/381309 770/381
DEF16754A 1955-02-04 1955-02-04 Residual current circuit breaker Pending DE1053080B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF16754A DE1053080B (en) 1955-02-04 1955-02-04 Residual current circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF16754A DE1053080B (en) 1955-02-04 1955-02-04 Residual current circuit breaker

Publications (1)

Publication Number Publication Date
DE1053080B true DE1053080B (en) 1959-03-19

Family

ID=7088337

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF16754A Pending DE1053080B (en) 1955-02-04 1955-02-04 Residual current circuit breaker

Country Status (1)

Country Link
DE (1) DE1053080B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110290B (en) * 1959-09-11 1961-07-06 Condor Werk Gebr Frede K G Residual current circuit breaker
DE1161632B (en) * 1960-07-07 1964-01-23 Dr Eduard Schrack Combined residual current and residual voltage circuit breaker
DE1173175B (en) * 1962-03-17 1964-07-02 Siemens Ag Residual current circuit breaker

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE450675C (en) * 1925-09-17 1927-10-08 Siemens & Halske Akt Ges Device for securing electrical lines
CH227246A (en) * 1939-09-28 1943-05-31 Hermes Patentverwertungs Gmbh Device for quick release of electrical switching devices.
DE753555C (en) * 1942-08-01 1952-04-17 Aeg Protective circuit for monitoring the earth conductor for sheathed lines and cables
DE939462C (en) * 1942-03-05 1956-05-03 Siemens Ag Device for protection against dangerous contact voltages in the event of an earth conductor break in AC systems for mining and underground operations
CH450675A (en) * 1966-01-20 1968-01-31 Hubacher Carl Support of structures to protect them in the event of vibrations in their foundations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE450675C (en) * 1925-09-17 1927-10-08 Siemens & Halske Akt Ges Device for securing electrical lines
CH227246A (en) * 1939-09-28 1943-05-31 Hermes Patentverwertungs Gmbh Device for quick release of electrical switching devices.
DE939462C (en) * 1942-03-05 1956-05-03 Siemens Ag Device for protection against dangerous contact voltages in the event of an earth conductor break in AC systems for mining and underground operations
DE753555C (en) * 1942-08-01 1952-04-17 Aeg Protective circuit for monitoring the earth conductor for sheathed lines and cables
CH450675A (en) * 1966-01-20 1968-01-31 Hubacher Carl Support of structures to protect them in the event of vibrations in their foundations

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110290B (en) * 1959-09-11 1961-07-06 Condor Werk Gebr Frede K G Residual current circuit breaker
DE1161632B (en) * 1960-07-07 1964-01-23 Dr Eduard Schrack Combined residual current and residual voltage circuit breaker
DE1173175B (en) * 1962-03-17 1964-07-02 Siemens Ag Residual current circuit breaker

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