JPS56125822A - On-load tap changer - Google Patents

On-load tap changer

Info

Publication number
JPS56125822A
JPS56125822A JP2828280A JP2828280A JPS56125822A JP S56125822 A JPS56125822 A JP S56125822A JP 2828280 A JP2828280 A JP 2828280A JP 2828280 A JP2828280 A JP 2828280A JP S56125822 A JPS56125822 A JP S56125822A
Authority
JP
Japan
Prior art keywords
current
lead out
limiting resistor
resistance value
tap changer
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
JP2828280A
Other languages
Japanese (ja)
Inventor
Shinichi Matsui
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2828280A priority Critical patent/JPS56125822A/en
Publication of JPS56125822A publication Critical patent/JPS56125822A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

PURPOSE:To equalize the consumption of contacts of a change-over switch and to contrive to elongate the life of the on-load tap changer by a method wherein optional number of lead out parts or slidable contact parts are provided at a current- limiting resistor itselt enabling the changing of the current-limiting resistance value of the change-over switch. CONSTITUTION:The lead out parts r1-r3 are provided respectively at the current- limiting resistor R1. In regard to the rated capacity, the lead out part r1 is provided, for example, at the position corresponding to the resistance value at the time of 100% loading, and the lead out parts r2, r3 are provided samely corresponding respectively to 75%, 50%, and the whole of the current-limiting resistor R1 is led out from the on-load tap changer of a transformer by connecting to the lead out part r3. Accordingly the same result can be obtained with the case when a resistance value Rp of the current-limiting resistor is decided from the expression Rp=0.5e/ iL (e is stepping voltage) making the value of load current iL to 50% of the capacity of the transformer, and because the sum total of breaking duty of respective contacts HA, HB and WA, WB becomes equal, the consumption of electrodes becomes to proceed equally.
JP2828280A 1980-03-06 1980-03-06 On-load tap changer Pending JPS56125822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2828280A JPS56125822A (en) 1980-03-06 1980-03-06 On-load tap changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2828280A JPS56125822A (en) 1980-03-06 1980-03-06 On-load tap changer

Publications (1)

Publication Number Publication Date
JPS56125822A true JPS56125822A (en) 1981-10-02

Family

ID=12244238

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2828280A Pending JPS56125822A (en) 1980-03-06 1980-03-06 On-load tap changer

Country Status (1)

Country Link
JP (1) JPS56125822A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105206402A (en) * 2015-11-10 2015-12-30 刁俊起 Novel on-load voltage regulation switch of transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105206402A (en) * 2015-11-10 2015-12-30 刁俊起 Novel on-load voltage regulation switch of transformer

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