DE393720C - Arrangement for switching off parts of a network that carry earth faults - Google Patents

Arrangement for switching off parts of a network that carry earth faults

Info

Publication number
DE393720C
DE393720C DEV17724D DEV0017724D DE393720C DE 393720 C DE393720 C DE 393720C DE V17724 D DEV17724 D DE V17724D DE V0017724 D DEV0017724 D DE V0017724D DE 393720 C DE393720 C DE 393720C
Authority
DE
Germany
Prior art keywords
earth
relay
voltage
network
arrangement
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.)
Expired
Application number
DEV17724D
Other languages
German (de)
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.)
Voigt and Haeffner AG
Original Assignee
Voigt and Haeffner AG
Publication date
Priority to DEV17724D priority Critical patent/DE393720C/en
Application granted granted Critical
Publication of DE393720C publication Critical patent/DE393720C/en
Expired legal-status Critical Current

Links

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
    • H02H3/42Emergency 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 product of voltage and current
    • H02H3/422Emergency 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 product of voltage and current using homopolar quantities

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)

Description

893720893720

Um bei Erdschluß im Netz diejenigen Stellen abgrenzen zu können, die der Erdschlußsteile am nächsten liegen und so die übrigen Teilte des Netzes vom Erdschluß frei zu machen, ist folgende Anordnung getroffen, bei der die Schalter einerseits von einem Stromrichtungsrelais in besonderer Schaltung überwacht werden, andererseits das Abschalten nur dann eintritt, wenn ein Spannungszeitrelais eineIn order to be able to delimit those points in the network in the event of an earth fault, which are the earth faults are closest and thus free the remaining parts of the network from the earth fault, the following arrangement is made, in which the switch is on the one hand from a direction relay monitored in a special circuit, on the other hand, the switch-off only occurs when a voltage time relay has a

ίο gewisse Zeit in Tätigkeit gewesen ist, dessen Laufzeit von dem Ansteigen der vom stärker werdenden Erdschlußstrom gleichsinnig beeinflußten Spannung abhängig ist. Hierbei wird die Stromspule des Erdstromrichtungsrelais in der bekannten Asymmetrieschaltung angewendet, während! die Spannungsspule des Erdschlußrichtungsrelais sowie des Spannungszeitrelais von der resultierenden Spannung der Phasen gegen Erde gespeist wird. Die Schaltung dieser Spannungsspulen kann in verschiedener Weise erfolgen. Sie könnten z. B. an eine Wicklung gelegt werden, die an dem vierten Schenkel einer Erdungsdrosselspule aufgesetzt ist (Abb. 1); sie könnten bei Anwendung eines in Sterndreieck geschalteten Transformators, dessen sekundäre Dreieckswicklung aufgeschnitten ist, an diesen aufgeschnittenen Punkt gelegt werden (Abb. 2); sie könnten in einer zwischen Transformator und Erde gelegten Erdungsdrosselspule sekundär gespeist werden (Abb. 3) oder könnten in Asymmetrieschaltung an der Sekundärspuk einer Erdungsdrosselspule (Abb. 4) oder anίο has been in activity for a certain time, of Running time of the increase in the same direction influenced by the increasing earth fault current Voltage is dependent. The current coil of the earth current direction relay is used in the known asymmetry circuit, while! the voltage coil of the earth fault direction relay and the voltage time relay is fed by the resulting voltage of the phases to earth. The circuit of these voltage coils can be in be done in different ways. You could e.g. B. be placed on a winding that on is placed on the fourth leg of a grounding reactor (Fig. 1); they could be at Application of a star-delta connected transformer, the secondary triangular winding of which is cut open, cut open on these Point to be placed (Fig. 2); they could be secondary in an earth choke coil placed between the transformer and earth be fed (Fig. 3) or could be asymmetrically connected to the secondary spuk a grounding reactor (Fig. 4) or on

dem Sternpunkt eines dreiphasigen Vorschaltwiderstandes liegen. In allen Fällen wird mit zunehmendem Erdschlußstrom die Spannung für die Spannungsspule des Erdstromrichtungsrelais sowie für die Spannungsspule des Spannungszeitrelais zunehmen, so daß im einen Fall festgestellt werden kann, ob Erdschlußstrom vorhanden ist, im anderen Falle aber die Abschaltung desjenigen Schalters bewirkt wird, in dem die Erdschlußspannung am höchsten ist, d. h. derjenigen Schalter, die dem Erdschluß benachbart sind.the star point of a three-phase series resistor. In all cases, with as the earth fault current increases, the voltage for the voltage coil of the earth current direction relay as well as for the voltage coil of the voltage time relay, so that in one case it can be determined whether earth fault current is present, but in the other case causes that switch to be switched off in which the earth fault voltage is highest, d. H. of those switches that are adjacent to the earth fault.

In den Abbildungen bezeichnet α das Spannungszeitrelais und b das Erdstromrichtungsrelais. In the figures, α denotes the voltage timing relay and b the earth current direction relay.

Claims (1)

Patent-Anspruch:Patent claim: Anordnung zum Abschalten von Erdschluß führenden Teilen eines Netzes, dadurch gekennzeichnet, daß die Abschaltung abhängig gemacht ist von der Verbindung eines Erdstromrichtungsrelais mit einem Spannungszeitrelais, wobei die Stromwicklung des als Wattrelais ausgebildeten Erdstromrichtungsrelais in der bekannten Asymmetrieschaltung angeschlossen ist, während die Spannungsspule des Erdstromrichtungsrelais und des Spannungszeitrelais von der in an sich bekannter Weise erzeugten resultierenden Spannung sämtlicher Leitungen gegen Erde gespeist wird.Arrangement for the disconnection of earth faults leading parts of a network, thereby characterized in that the shutdown is made dependent on the connection of a ground current direction relay with a Voltage time relay, the current winding of the earth current direction relay designed as a watertight relay in the known Asymmetry circuit is connected while the voltage coil of the earth current direction relay and the voltage time relay from the resulting voltage generated in a manner known per se all lines are fed to earth.
DEV17724D Arrangement for switching off parts of a network that carry earth faults Expired DE393720C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV17724D DE393720C (en) Arrangement for switching off parts of a network that carry earth faults

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV17724D DE393720C (en) Arrangement for switching off parts of a network that carry earth faults

Publications (1)

Publication Number Publication Date
DE393720C true DE393720C (en) 1924-04-16

Family

ID=7576564

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV17724D Expired DE393720C (en) Arrangement for switching off parts of a network that carry earth faults

Country Status (1)

Country Link
DE (1) DE393720C (en)

Similar Documents

Publication Publication Date Title
DE393720C (en) Arrangement for switching off parts of a network that carry earth faults
DE2331615A1 (en) SYNCHRONOUS SWITCH WITH PARALLEL CONTACT
DE735657C (en) Protective device for multi-phase AC systems that are subject to changing working conditions
DE2134588A1 (en) Protection circuit for a static switch
DE822128C (en) Arrangement for interrupting electrical circuits
DE732755C (en) Arrangement for detecting the earth fault of bolts which are used to brace the laminated cores of electrical machines and are arranged in an isolated manner
DE716745C (en) Device to improve the commutation in multi-phase rectifiers working with mechanically moved contacts
DE457892C (en) Device to protect metal vapor rectifier systems in the event of return
DE463421C (en) Device for the selective disconnection of faulty line sections in networks with switching relays, the tripping times of which are staggered
DE401909C (en) Arrangement for the local delimitation of the fault area of electrical parallel line networks with more than two parallel line branches
DE374497C (en) Arrangement for the local limitation of the fault area in line networks with parallel conductors
DE718084C (en) Arrangement for spark extinction
DE420348C (en) Method and device for inducing electrical currents in a conductor structure
DE550061C (en) Device for the rapid de-energization of electrical power generators
DE365223C (en) Device to switch off faulty sections in electrical distribution systems automatically, with coupling transformer and auxiliary line
DE506526C (en) Reversible oil switch with three bushing insulators per phase
DE710704C (en) Contact protection circuit for alternating current networks
DE351961C (en) Device for the automatic shutdown of AC windings in the event of a fault in the winding
DE965880C (en) Procedure for testing electrical circuit breakers with high arc voltage
AT157259B (en) Energy direction relay for protecting three-phase lines fed from two sides.
DE971445C (en) Procedure for extinguishing the earth fault arc in three-phase systems
DE652208C (en) Arrangement for switching off converters that work with discharge vessels with mercury cathodes
DE753797C (en) Directional cross-current comparison protection device
AT118202B (en) Relays for indicating malfunctions in electrical multi-phase systems.
DE532010C (en) Device for selective protection of high-voltage transformers