GB585660A - Improvements in electric supply systems having means for absorbing regenerated power - Google Patents

Improvements in electric supply systems having means for absorbing regenerated power

Info

Publication number
GB585660A
GB585660A GB177843A GB177843A GB585660A GB 585660 A GB585660 A GB 585660A GB 177843 A GB177843 A GB 177843A GB 177843 A GB177843 A GB 177843A GB 585660 A GB585660 A GB 585660A
Authority
GB
United Kingdom
Prior art keywords
resistance
relay
bus
bars
coils
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
GB177843A
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.)
EDWARD HUGH CROFT
General Electric Co PLC
Original Assignee
EDWARD HUGH CROFT
General Electric Co PLC
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 EDWARD HUGH CROFT, General Electric Co PLC filed Critical EDWARD HUGH CROFT
Priority to GB177843A priority Critical patent/GB585660A/en
Publication of GB585660A publication Critical patent/GB585660A/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
    • H02H7/1209—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 converters using only discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

585,660. Protective cut-out arrangements. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. Feb. 3, 1943, No. 1778. [Class 38 (v)] A protective arrangement for absorbing regenerated power comprises a resistance 8 arranged to be connected across bus-bars 3, 4, so as to absorb power regenerated therein, voltage-responsive coils L1W, L2W operated when the voltage across the bus-bars exceeds a predetermined value so as to insert the resistance, a time-delay relay TS for disconnecting the resistance after a predetermined time, and a forward-current-operated relay PR for disconnecting the resistance when forward-current flows in the bus-bars, the relays TS and PR operating independently of one another. Upon overvoltage, the coils L1W, L2W, are energized through a normally-closed contact lb1 and a regulating resistance 9, thereby closing contacts l1, l2, l12, 122, L1 and L2, and putting resistance 8 in circuit. The relay TS is energized and after a time-delay, contact ts1 opens, thereby deenergizing coils L1W, L2W. Meanwhile, relay PR is de-energized by the reverse-current in the bus-bars 3, 4, to close contact pr1 and energize coil LA. Contacts la1, la2 close and energize coil LB, opening contact lb1 and closing lb2. When forward-current in the bus-bars 3, 4 is restored, relay PR is energized, opening contact pr1 and de-energizing coil LA to open contacts la1, la2, thereby de-energizing coils L1W, L2W, if this has not already been done by the timedelay relay TS. Coils TRS, TRP, are respectively connected in series and parallel with the resistance 8 and operate an indicator contact tr1 should the resistance be overheated.
GB177843A 1943-02-03 1943-02-03 Improvements in electric supply systems having means for absorbing regenerated power Expired GB585660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB177843A GB585660A (en) 1943-02-03 1943-02-03 Improvements in electric supply systems having means for absorbing regenerated power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB177843A GB585660A (en) 1943-02-03 1943-02-03 Improvements in electric supply systems having means for absorbing regenerated power

Publications (1)

Publication Number Publication Date
GB585660A true GB585660A (en) 1947-02-18

Family

ID=9727817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB177843A Expired GB585660A (en) 1943-02-03 1943-02-03 Improvements in electric supply systems having means for absorbing regenerated power

Country Status (1)

Country Link
GB (1) GB585660A (en)

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