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DE1000913B - Three-pole overcurrent relay or overcurrent time relay for three-phase networks - Google Patents

Three-pole overcurrent relay or overcurrent time relay for three-phase networks

Info

Publication number
DE1000913B
DE1000913B DEL16038A DEL0016038A DE1000913B DE 1000913 B DE1000913 B DE 1000913B DE L16038 A DEL16038 A DE L16038A DE L0016038 A DEL0016038 A DE L0016038A DE 1000913 B DE1000913 B DE 1000913B
Authority
DE
Germany
Prior art keywords
overcurrent
relay
pole
time relay
phase
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
DEL16038A
Other languages
German (de)
Inventor
Heinz Gutmann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL16038A priority Critical patent/DE1000913B/en
Publication of DE1000913B publication Critical patent/DE1000913B/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
    • H02H3/08—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 excess current
    • H02H3/083—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 excess current for three-phase systems

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Description

Dreipoliges Uberstrom-Relais bzw. Überstrom-Zeitrelais für Drehstromnetze Für den allpoligen Schutz von Drehstromanlageteilen benutzt man im allgemeinen Überstrom-Zeitrelais, bei denen für jeden Phasenleiter ein eigenes Überstromglied vorgesehen ist. Die vorliegende Erfindung zeigt einen Weg zur Vereinfachung und Verbilligung. Sie geht dabei von der Erkenntnis aus, daß ein Schutz gegen sämtliche in einem nicht geerdeten oder beliebig geerdeten Drehstromsystem möglichen Kurzschlüsse, Doppelerdschlüsse bzw. Erd-/Kurzschlüsse,auch erreicht wird, wenn man die relativ hochwertigen Überstromglieder nur in zwei Phasenleitern anwendet und das dritte Anregeglied in den Summenstromkreis der drei Wandler einschaltet. Da dieser im ungestörten Betrieb der Anlage keinen nennenswerten Belastungsstrom führt, genügt hier eim an. sich von Distanz,schutzeinrichtungen her bekanntes einfaches Hid.fsrelai,s mit entsprechender Stromwicklung, an das hinsichtlich seiner meßtechnischen Eigenschaften sowie seines Einstellbereiches und seines Halteverhältnisses keine besonderen Anforderungen gestellt zu werden brauchen. Im allgemeinen wird eine Einstellbarkeit des Ansprechstromes überhaupt nicht notwendig sein, da es meist genügt, den kleinsten Ansprechwert der in den Phasenleitern liegenden Überstrom-Relais fest einzueichen.Three-pole overcurrent relay or overcurrent time relay for three-phase networks Overcurrent time relays are generally used for all-pole protection of three-phase system components. where a separate overcurrent element is provided for each phase conductor. the The present invention shows a way of simplifying and making it cheaper. she goes thereby starting from the knowledge that a protection against all in an ungrounded or any earthed three-phase system possible short circuits, double earth faults or earth faults / short circuits, is also achieved if one uses the relatively high-quality overcurrent elements only applies in two phase conductors and the third excitation element in the summation circuit the three converters switch on. Since this does not have any carries a significant load current, eim is sufficient here. away from distance, protective devices known simple Hid.fsrelai, s with corresponding current winding, to which with regard to its metrological properties as well as its setting range and its holding ratio no special requirements need to be made. Generally will an adjustability of the response current may not be necessary at all, since it is mostly is sufficient, the lowest response value of the overcurrent relays in the phase conductors to be poured in firmly.

Claims (2)

PATENTANSPRÜCHE: 1. Dreipoliges Überstrom-Relais bzw. Überstrom-Zeitrelais für den Schutz von Drehstromanlageteilen, dadurch gekennzeichnet, daß nur zwei Phasenleiter mit überstromgliedern versehen sind und ein drittes Anregeglied als einfaches Hilfsrelais in den Summenstromkreis der drei Stromwandler gelegt wird. PATENT CLAIMS: 1. Three-pole overcurrent relay or overcurrent time relay for the protection of three-phase system parts, characterized in that only two phase conductors are provided with overcurrent elements and a third excitation element as a simple auxiliary relay is placed in the summation circuit of the three current transformers. 2. Dreipoliges Überstrom-Relais bzw. Überstrom-Zeitrelais nach Anspruch 1, dadurch gekennzeichnet, daß der Ansprechwert des im Summen-Stromkreis liiiegenden Hilfsrelais auf denen kleimGteinstellbaren Ansprechwert der in den Phasenleitern liegenden Überstromglieder oder noch etwas darunter eingestellt wird. In Betracht gezogene Druckschriften-»Strom- und Spannungswandler« von Dr.-Ing. M. W a 1 t e r, München, 1944, S. 57, Abb. 63.2. Three-pole overcurrent relay or overcurrent time relay according to Claim 1, characterized in that the response value of the auxiliary relays in the summation circuit on which can be adjusted Response value of the overcurrent elements in the phase conductors or something else is set below. Considered pamphlets - »current and voltage transformers« by Dr.-Ing. M. W a 1 t e r, Munich, 1944, p. 57, fig. 63.
DEL16038A 1953-07-10 1953-07-10 Three-pole overcurrent relay or overcurrent time relay for three-phase networks Pending DE1000913B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL16038A DE1000913B (en) 1953-07-10 1953-07-10 Three-pole overcurrent relay or overcurrent time relay for three-phase networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL16038A DE1000913B (en) 1953-07-10 1953-07-10 Three-pole overcurrent relay or overcurrent time relay for three-phase networks

Publications (1)

Publication Number Publication Date
DE1000913B true DE1000913B (en) 1957-01-17

Family

ID=7260304

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL16038A Pending DE1000913B (en) 1953-07-10 1953-07-10 Three-pole overcurrent relay or overcurrent time relay for three-phase networks

Country Status (1)

Country Link
DE (1) DE1000913B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062801B (en) * 1958-10-25 1959-08-06 Siemens Ag Contactless overcurrent protection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062801B (en) * 1958-10-25 1959-08-06 Siemens Ag Contactless overcurrent protection

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