GB933473A - Improvements in and relating to transformer switching circuits - Google Patents

Improvements in and relating to transformer switching circuits

Info

Publication number
GB933473A
GB933473A GB4038358A GB4038358A GB933473A GB 933473 A GB933473 A GB 933473A GB 4038358 A GB4038358 A GB 4038358A GB 4038358 A GB4038358 A GB 4038358A GB 933473 A GB933473 A GB 933473A
Authority
GB
United Kingdom
Prior art keywords
impedance
relating
dec
transformer
switching circuits
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
GB4038358A
Inventor
Graham John Scoles
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB4038358A priority Critical patent/GB933473A/en
Publication of GB933473A publication Critical patent/GB933473A/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
    • H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
    • H02H9/002—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off limiting inrush current on switching on of inductive loads subjected to remanence, e.g. transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

933,473. Excessive current protection. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 15, 1959 [Dec. 15, 1958], No. 40383/58. Class 38 (4). To limit the initial current surge when switching a transformer TR to a supply main, the main switch S1 is shunted by an impedance in the form of a resistor R in series with an auxiliary switch SR of smaller capacity which closes before the main switch. The impedance is equal to or slightly less than the impedance of the transformer primary winding in the unloaded condition. The load on the secondary winding may be a grid-controlled rectifier.
GB4038358A 1958-12-15 1958-12-15 Improvements in and relating to transformer switching circuits Expired GB933473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4038358A GB933473A (en) 1958-12-15 1958-12-15 Improvements in and relating to transformer switching circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4038358A GB933473A (en) 1958-12-15 1958-12-15 Improvements in and relating to transformer switching circuits

Publications (1)

Publication Number Publication Date
GB933473A true GB933473A (en) 1963-08-08

Family

ID=10414616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4038358A Expired GB933473A (en) 1958-12-15 1958-12-15 Improvements in and relating to transformer switching circuits

Country Status (1)

Country Link
GB (1) GB933473A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412190A1 (en) * 1977-12-19 1979-07-13 Philips Corp CIRCUIT TO PREVENT TOO HIGH SWITCHING VOLTAGES IN X-RAY GENERATORS
GB2179806A (en) * 1985-07-16 1987-03-11 Hayashibara Ken Switching circuit for limiting surge current
EP3561823A1 (en) 2018-04-27 2019-10-30 Ormazabal Corporate Technology, A.I.E. High-voltage electrical equipment with a device for limiting the magnetising current

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412190A1 (en) * 1977-12-19 1979-07-13 Philips Corp CIRCUIT TO PREVENT TOO HIGH SWITCHING VOLTAGES IN X-RAY GENERATORS
GB2179806A (en) * 1985-07-16 1987-03-11 Hayashibara Ken Switching circuit for limiting surge current
EP3561823A1 (en) 2018-04-27 2019-10-30 Ormazabal Corporate Technology, A.I.E. High-voltage electrical equipment with a device for limiting the magnetising current

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