JPS5476937A - Enclosed switchboard - Google Patents

Enclosed switchboard

Info

Publication number
JPS5476937A
JPS5476937A JP14384377A JP14384377A JPS5476937A JP S5476937 A JPS5476937 A JP S5476937A JP 14384377 A JP14384377 A JP 14384377A JP 14384377 A JP14384377 A JP 14384377A JP S5476937 A JPS5476937 A JP S5476937A
Authority
JP
Japan
Prior art keywords
pressure relief
ceiling
caused
air
internal
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
JP14384377A
Other languages
Japanese (ja)
Inventor
Shuichi Idesawa
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 JP14384377A priority Critical patent/JPS5476937A/en
Publication of JPS5476937A publication Critical patent/JPS5476937A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To suppress an excessive pressure, caused by an internal arc fault, to a low level, by means of safely releasing an internal air to the ceiling.
CONSTITUTION: When caused an arcing in a chamber 3 for housing a top breaker 10, a pressure relief plate 13, installed to a ceiling 9, works to open by an internal pressrue rise, to exhaust an expanding air. At this time, by shielding flanges 17, 17' that are provided in the shielding plate 19, pressure relief flange 23, main pressure relief duct 15, and auxiliary pressure relief duct 16, the arc producing chamber 3 will be separated from a door 8 portion, with an expansion air exhausted through the pressure relief plate 13. Subsequently, in case of arcing being caused in a bottom breaker chamber 7, an in-flow of inflated air to a side opening 18 of the main pressure relief duct 15 for the bottom use will open top covers 21, 22, to make open a pressure relief plate 14 provided in the ceiling 9 of the board.
COPYRIGHT: (C)1979,JPO&Japio
JP14384377A 1977-12-02 1977-12-02 Enclosed switchboard Pending JPS5476937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14384377A JPS5476937A (en) 1977-12-02 1977-12-02 Enclosed switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14384377A JPS5476937A (en) 1977-12-02 1977-12-02 Enclosed switchboard

Publications (1)

Publication Number Publication Date
JPS5476937A true JPS5476937A (en) 1979-06-20

Family

ID=15348231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14384377A Pending JPS5476937A (en) 1977-12-02 1977-12-02 Enclosed switchboard

Country Status (1)

Country Link
JP (1) JPS5476937A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749304A (en) * 1980-09-09 1982-03-23 Tokyo Shibaura Electric Co Enclosed switchboard
FR2579032A1 (en) * 1985-03-14 1986-09-19 Merlin Gerin High-voltage interior substation with decompression volume

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749304A (en) * 1980-09-09 1982-03-23 Tokyo Shibaura Electric Co Enclosed switchboard
FR2579032A1 (en) * 1985-03-14 1986-09-19 Merlin Gerin High-voltage interior substation with decompression volume

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