GB955847A - Improvements in or relating to the indication of back-fire in rectifier systems - Google Patents

Improvements in or relating to the indication of back-fire in rectifier systems

Info

Publication number
GB955847A
GB955847A GB1026362A GB1026362A GB955847A GB 955847 A GB955847 A GB 955847A GB 1026362 A GB1026362 A GB 1026362A GB 1026362 A GB1026362 A GB 1026362A GB 955847 A GB955847 A GB 955847A
Authority
GB
United Kingdom
Prior art keywords
iron core
primary winding
fire
march
secondary windings
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
GB1026362A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB955847A publication Critical patent/GB955847A/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
    • H02H7/10—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 converters; for rectifiers
    • H02H7/12—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 converters; for rectifiers for static converters or rectifiers
    • H02H7/125—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 converters; for rectifiers for static converters or rectifiers for rectifiers
    • H02H7/1255—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 converters; for rectifiers for static converters or rectifiers for rectifiers responsive to internal faults, e.g. by monitoring ripple in output voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
    • G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side
    • 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
    • H02H3/087—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 dc applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Ac-Ac Conversion (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

955,847. Transformers. ALMANNA SVENSKA ELEKTRISKA A.B. March 21, 1961 [March 24, 1960], No. 10213/61. Heading H1T. [Also in Divisions G1 and H2] Means for indicating back-fire in a mercury arc converter comprise an indicating device 5 and a transformer 1 having a common primary winding 2 magnetically linked with series opposed secondary windings 3, 4 one of the links being much more readily saturable than the other. In the arrangement shown each magnetic circuit includes an iron core having similar geometrical dimensions one core however comprising magnetic orientated laminations. In an alternative arrangement (Fig. 6, not shown) the secondary windings are linked with the primary winding through an iron core and by air induction respectively, the iron core incorporating a bias winding to control the degree of saturation. Cores having differing geometrical dimensions are also disclosed. The primary winding 2 (Fig. 1) is connected in series with the back-firing element and the diodes 6, 7 allow the indicating device 5 to be actuated only by the first reversal of current, the return to normal firing being undetected.
GB1026362A 1960-03-24 1962-03-16 Improvements in or relating to the indication of back-fire in rectifier systems Expired GB955847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE295060 1960-03-24

Publications (1)

Publication Number Publication Date
GB955847A true GB955847A (en) 1964-04-22

Family

ID=20261065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1026362A Expired GB955847A (en) 1960-03-24 1962-03-16 Improvements in or relating to the indication of back-fire in rectifier systems

Country Status (2)

Country Link
CH (1) CH383493A (en)
GB (1) GB955847A (en)

Also Published As

Publication number Publication date
CH383493A (en) 1964-10-31

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