GB169175A - Improved method of protecting polyphase supply circuits on the occurrence of an earth connection - Google Patents

Improved method of protecting polyphase supply circuits on the occurrence of an earth connection

Info

Publication number
GB169175A
GB169175A GB24562/21A GB2456221A GB169175A GB 169175 A GB169175 A GB 169175A GB 24562/21 A GB24562/21 A GB 24562/21A GB 2456221 A GB2456221 A GB 2456221A GB 169175 A GB169175 A GB 169175A
Authority
GB
United Kingdom
Prior art keywords
point
occurrence
improved method
supply circuits
earth connection
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
GB24562/21A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB169175A publication Critical patent/GB169175A/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

  • Regulation Of General Use Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

169,175. Akt.-Ges. Brown, Boveri, et Cie. Sept. 16, 1920, [Convention date]. Protective arrangements.-A protective arrangement for a polyphase system having no available zero voltage point consists of an earthing inductance D' connected to the supply conductor I and an earthing inductance D<2> connected to a point d between the conductors II and III. C<1>, C<2>, C<3> are the three-part capacities near the ends of the supply conductors, and the point d is determined by the formula a d / d b = C<2>/C<3> or the point d may be the middle point of the winding a, b. Formulae are given for determining the values of the inductances D<1>, D<2> in accordance with the frequency of the system and the values of the capacities C<1>, C<2>, C<3>.
GB24562/21A 1920-09-16 1921-09-15 Improved method of protecting polyphase supply circuits on the occurrence of an earth connection Expired GB169175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH169175X 1920-09-16

Publications (1)

Publication Number Publication Date
GB169175A true GB169175A (en) 1922-12-07

Family

ID=4421334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24562/21A Expired GB169175A (en) 1920-09-16 1921-09-15 Improved method of protecting polyphase supply circuits on the occurrence of an earth connection

Country Status (4)

Country Link
CH (1) CH91421A (en)
DE (1) DE351965C (en)
FR (1) FR541098A (en)
GB (1) GB169175A (en)

Also Published As

Publication number Publication date
FR541098A (en) 1922-07-22
DE351965C (en) 1922-04-18
CH91421A (en) 1921-11-01

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