JPS556801A - Oil-filled electrical apparatus - Google Patents

Oil-filled electrical apparatus

Info

Publication number
JPS556801A
JPS556801A JP7750178A JP7750178A JPS556801A JP S556801 A JPS556801 A JP S556801A JP 7750178 A JP7750178 A JP 7750178A JP 7750178 A JP7750178 A JP 7750178A JP S556801 A JPS556801 A JP S556801A
Authority
JP
Japan
Prior art keywords
pressure
valve body
oil
release
switch
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
JP7750178A
Other languages
Japanese (ja)
Inventor
Kiyoshi Sasaki
Ryoji Watanabe
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 JP7750178A priority Critical patent/JPS556801A/en
Publication of JPS556801A publication Critical patent/JPS556801A/en
Pending legal-status Critical Current

Links

Landscapes

  • Housings And Mounting Of Transformers (AREA)

Abstract

PURPOSE: To release the internal pressure efficiently in case of abnormality eliminating the mounting of a pressure relief pipe by actuating a switch of a trouble detector in linkage with the action of a valve body provided between an oiling vessel and a conservator.
CONSTITUTION: While the body 1 of a transformer and a changeover switch 2 work normally, a valve body 16 is separated from a valve seat 17. But as the internal pressure rises because of abnormality, with the rapid flow of the oil, the valve body 16 moves in the direction of the arrow F2 to close the valve body 17. With such an arrangement, conservators 7 and 8 are isolated from the body 1 and the changeover switch 2 while a magnet approaches a lead switch enough to be actuated and a signal is sent to a trouble detector 21. At this point, pressure release devices 5 and 6 release pressure directly affected by an abnormal pressure. In addition, no oil in the conservators 7 and 8 is spilled as the valve body 16 is closed under the pressure in the direction of the arrow F1.
COPYRIGHT: (C)1980,JPO&Japio
JP7750178A 1978-06-28 1978-06-28 Oil-filled electrical apparatus Pending JPS556801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7750178A JPS556801A (en) 1978-06-28 1978-06-28 Oil-filled electrical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7750178A JPS556801A (en) 1978-06-28 1978-06-28 Oil-filled electrical apparatus

Publications (1)

Publication Number Publication Date
JPS556801A true JPS556801A (en) 1980-01-18

Family

ID=13635706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7750178A Pending JPS556801A (en) 1978-06-28 1978-06-28 Oil-filled electrical apparatus

Country Status (1)

Country Link
JP (1) JPS556801A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6827301B1 (en) 2001-07-31 2004-12-07 Patrick Copeland Crushing—breaking apparatus
GR20130100026A (en) * 2012-03-22 2013-10-15 Bharat Heavy Electricals Limited, An imroved power transformer with vacuum type on load tap changer (oltc) operable at an oil-head exceeding ten meters
JP2019201100A (en) * 2018-05-16 2019-11-21 東芝産業機器システム株式会社 Oil-immersed stationary induction apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6827301B1 (en) 2001-07-31 2004-12-07 Patrick Copeland Crushing—breaking apparatus
GR20130100026A (en) * 2012-03-22 2013-10-15 Bharat Heavy Electricals Limited, An imroved power transformer with vacuum type on load tap changer (oltc) operable at an oil-head exceeding ten meters
JP2019201100A (en) * 2018-05-16 2019-11-21 東芝産業機器システム株式会社 Oil-immersed stationary induction apparatus

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