GB525334A - Improvements in and relating to protective devices for electric transmission systems - Google Patents

Improvements in and relating to protective devices for electric transmission systems

Info

Publication number
GB525334A
GB525334A GB534639A GB534639A GB525334A GB 525334 A GB525334 A GB 525334A GB 534639 A GB534639 A GB 534639A GB 534639 A GB534639 A GB 534639A GB 525334 A GB525334 A GB 525334A
Authority
GB
United Kingdom
Prior art keywords
resistance
relating
earthing
transmission systems
reactor
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
GB534639A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB534639A priority Critical patent/GB525334A/en
Publication of GB525334A publication Critical patent/GB525334A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

525,334. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. (Sh-baura Engineering Works, Ltd.). Feb. 17, 1939, No. 5346. [Class 38 (v)] In a protective system employing an arc-suppressing reactor (Petersen coil) 4 with tappings 5 so that its reactance can be adapted to actual operating conditions of the line 1, and in which a resistance 8 is included when a permanent earth occurs, so as to increase the effective component of earthing current, the resistance is connected to a tapped secondary winding 6 of the reactor, and the taps 5, 7 are changed simultaneously by the means 10, so that the secondary volts applied to the. resistance, and hence the effective earthing-current component, remain constant irrespective of the condition of the primary side. The resistance is inserted by a switch 9 energized by a time-limit relay (not shown).
GB534639A 1939-02-17 1939-02-17 Improvements in and relating to protective devices for electric transmission systems Expired GB525334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB534639A GB525334A (en) 1939-02-17 1939-02-17 Improvements in and relating to protective devices for electric transmission systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB534639A GB525334A (en) 1939-02-17 1939-02-17 Improvements in and relating to protective devices for electric transmission systems

Publications (1)

Publication Number Publication Date
GB525334A true GB525334A (en) 1940-08-27

Family

ID=9794377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB534639A Expired GB525334A (en) 1939-02-17 1939-02-17 Improvements in and relating to protective devices for electric transmission systems

Country Status (1)

Country Link
GB (1) GB525334A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116428A2 (en) 2007-03-26 2008-10-02 Ege, Spol. Sr.O. Method of improvement of earth-fault protection reliability and applicable wiring diagram
CZ305348B6 (en) * 2009-08-17 2015-08-12 Mega - Měřící Energetické Aparáty, A.S. Device to localize ground connection in high-voltage network and localization method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008116428A2 (en) 2007-03-26 2008-10-02 Ege, Spol. Sr.O. Method of improvement of earth-fault protection reliability and applicable wiring diagram
EP2130277B1 (en) * 2007-03-26 2013-06-19 EGE, Spol. sr.o. Circuit and method for compensating capacitive earth currents in networks
CZ305348B6 (en) * 2009-08-17 2015-08-12 Mega - Měřící Energetické Aparáty, A.S. Device to localize ground connection in high-voltage network and localization method thereof

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