JPS6474023A - Current-limiting device for ac system - Google Patents

Current-limiting device for ac system

Info

Publication number
JPS6474023A
JPS6474023A JP22636987A JP22636987A JPS6474023A JP S6474023 A JPS6474023 A JP S6474023A JP 22636987 A JP22636987 A JP 22636987A JP 22636987 A JP22636987 A JP 22636987A JP S6474023 A JPS6474023 A JP S6474023A
Authority
JP
Japan
Prior art keywords
leg
phase
core
wound
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.)
Pending
Application number
JP22636987A
Other languages
Japanese (ja)
Inventor
Noboru Tsuya
Goro Shirai
Shunji Tokuyama
Yukio Kurosawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22636987A priority Critical patent/JPS6474023A/en
Publication of JPS6474023A publication Critical patent/JPS6474023A/en
Pending 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
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/021—Current limitation using saturable reactors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE:To increase an inductance at the time of unsaturation and miniaturize a device dimensionally, by providing the only central leg of a three-leg core with an AC winding. CONSTITUTION:The AC windings 1A, 1B, 1C of each phase are wound up on the only central legs 3A, 3B, 3C of the three-leg cores 2A, 2B, 2C of each phase. The residual two legs of the three-leg cores of each phase are provided with two DC-controlling windings 4A and 5A, 4B and 5B, 4C and 5C which are mutually wound up in the counter directions and connected in series. The three DC-controlling windings are connected to a DC power source VDC, together with a control circuit 8 consisting of a core 6, a winding 7 wound up on the core, and magnetic flux phiDC for applying self induction, and a reactance 9.
JP22636987A 1987-09-11 1987-09-11 Current-limiting device for ac system Pending JPS6474023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22636987A JPS6474023A (en) 1987-09-11 1987-09-11 Current-limiting device for ac system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22636987A JPS6474023A (en) 1987-09-11 1987-09-11 Current-limiting device for ac system

Publications (1)

Publication Number Publication Date
JPS6474023A true JPS6474023A (en) 1989-03-20

Family

ID=16844060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22636987A Pending JPS6474023A (en) 1987-09-11 1987-09-11 Current-limiting device for ac system

Country Status (1)

Country Link
JP (1) JPS6474023A (en)

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