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DE560700C - Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers - Google Patents

Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers

Info

Publication number
DE560700C
DE560700C DESCH92439D DESC092439D DE560700C DE 560700 C DE560700 C DE 560700C DE SCH92439 D DESCH92439 D DE SCH92439D DE SC092439 D DESC092439 D DE SC092439D DE 560700 C DE560700 C DE 560700C
Authority
DE
Germany
Prior art keywords
wattmetric
monitoring
transformers
iron losses
protection relay
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
DESCH92439D
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.)
AEG AG
Siemens Schuckertwerke AG
Siemens Corp
Original Assignee
AEG AG
Siemens Schuckertwerke AG
Siemens Corp
Publication date
Priority to DESCH92439D priority Critical patent/DE560700C/en
Application granted granted Critical
Publication of DE560700C publication Critical patent/DE560700C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H02H7/045—Differential protection of transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)

Description

*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:

Dr.-Ing. Hermann Schulze in Aunia, Thür.Dr.-Ing. Hermann Schulze in Aunia, Thür.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREIBERLIN. PRINTED IN THE REICH PRINTING COMPANY

Claims (1)

Patentanspruch :Claim: Wattmetrisches Differential - Schutzrelais für Transformatoren nach Patent 512495, dadurch gekennzeichnet, daß zur Überwachung der mit der Erregerspannung veränderlichen Transformator-Eisenverluste Mittel (n) vorgesehen sind, welche die Geschwindigkeit des Zeitgliedes abhängig von der Erregerspannung, und zwar in demselben Verhältnis verändern, mit dem die Transformator-Eisenverluste von der Erregerspannung abhängen.Wattmetric differential protection relay for transformers according to patent 512495, characterized in that means (s) are provided for monitoring the transformer iron losses, which vary with the excitation voltage, which change the speed of the timing element as a function of the excitation voltage, and in the same ratio with which the transformer iron losses depend on the excitation voltage.
DESCH92439D Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers Expired DE560700C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH92439D DE560700C (en) Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH92439D DE560700C (en) Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers

Publications (1)

Publication Number Publication Date
DE560700C true DE560700C (en) 1932-10-06

Family

ID=7444898

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH92439D Expired DE560700C (en) Wattmetric differential protection relay based on the Ferraris principle for monitoring the iron losses of transformers

Country Status (1)

Country Link
DE (1) DE560700C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974105C (en) * 1953-04-11 1960-10-06 Erika Hingst Furnace wall equipped with cooling pipes, in particular the inner wall of the reaction chamber from Roestoefen u. like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974105C (en) * 1953-04-11 1960-10-06 Erika Hingst Furnace wall equipped with cooling pipes, in particular the inner wall of the reaction chamber from Roestoefen u. like

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