JPS5694612A - Transformer capable of loaded tap switching - Google Patents

Transformer capable of loaded tap switching

Info

Publication number
JPS5694612A
JPS5694612A JP16925179A JP16925179A JPS5694612A JP S5694612 A JPS5694612 A JP S5694612A JP 16925179 A JP16925179 A JP 16925179A JP 16925179 A JP16925179 A JP 16925179A JP S5694612 A JPS5694612 A JP S5694612A
Authority
JP
Japan
Prior art keywords
tap
electrodes
coils
loose
capacity
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.)
Granted
Application number
JP16925179A
Other languages
Japanese (ja)
Other versions
JPS6259529B2 (en
Inventor
Masaru Watanabe
Minoru Hoshi
Yoshitake Kashima
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 JP16925179A priority Critical patent/JPS5694612A/en
Publication of JPS5694612A publication Critical patent/JPS5694612A/en
Publication of JPS6259529B2 publication Critical patent/JPS6259529B2/ja
Granted 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

Abstract

PURPOSE:To obtain the transformer capable of loaded tap switching applicable even when the insulation class of a line terminal is high, by connecting electrostatically neutral-point sides of loose and tight tap coils with each other by a capacity. CONSTITUTION:A loaded tap switching device 7 comprises a contact switch 8, a tap selector 9 and a change-over switch 10. The neutral point sides of the loose tap coil 2 and of the tight tap coils 3 are connected by the capacity 12, thus being coupled electrostatically to each other. Since thunder impulse generating voltage caused between the electrodes 11 of the change-over switch 10 connected to the above coils is reduced considerably in this way, it can be controlled to be below the dielectric strength between the electrodes 11 of the switch 10 even with the transformer whose line terminal is ranked at high insulation class. It is advisable that the capacity 12 is supported by an insulating member in the vicinity of the loaded tap switching device 7 in a tank. By this constitution, it becomes unnecessary to provide large dielectric strength between the electrodes to provide large dielectric strength between the electrodes of the change-over switch even in the transformer wherein some parts of the loose and tight tap coils are arranged in positions different in the direction of the diameter of winding thereof.
JP16925179A 1979-12-27 1979-12-27 Transformer capable of loaded tap switching Granted JPS5694612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16925179A JPS5694612A (en) 1979-12-27 1979-12-27 Transformer capable of loaded tap switching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16925179A JPS5694612A (en) 1979-12-27 1979-12-27 Transformer capable of loaded tap switching

Publications (2)

Publication Number Publication Date
JPS5694612A true JPS5694612A (en) 1981-07-31
JPS6259529B2 JPS6259529B2 (en) 1987-12-11

Family

ID=15883040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16925179A Granted JPS5694612A (en) 1979-12-27 1979-12-27 Transformer capable of loaded tap switching

Country Status (1)

Country Link
JP (1) JPS5694612A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471334A (en) * 1981-07-29 1984-09-11 Hitachi, Ltd. On-load tap-changing transformer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425843U (en) * 1987-07-29 1989-02-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4471334A (en) * 1981-07-29 1984-09-11 Hitachi, Ltd. On-load tap-changing transformer

Also Published As

Publication number Publication date
JPS6259529B2 (en) 1987-12-11

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