JPS5471351A - Switchgear - Google Patents
SwitchgearInfo
- Publication number
- JPS5471351A JPS5471351A JP13780477A JP13780477A JPS5471351A JP S5471351 A JPS5471351 A JP S5471351A JP 13780477 A JP13780477 A JP 13780477A JP 13780477 A JP13780477 A JP 13780477A JP S5471351 A JPS5471351 A JP S5471351A
- Authority
- JP
- Japan
- Prior art keywords
- main circuit
- current
- circuit contact
- contact
- released
- 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
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
PURPOSE: To enable to cut-off a short-circuit at a remote end, which is not detected economically at a substation, without an operation of a substation breaker.
CONSTITUTION: With supplying electricity to a distribution line, electricity is supplied to an operating cirucit 4 from a power transformer 5 and a main circuit contact 3 of a switchgear is closed. In this state, if an accident occurs at a load end 9 of the distributing line, a current more than the breaking capacity of the main circuit contact 3 flows ordinalily in a main circuit conductor 2. An overcurrent relay 8 detects this accidental current and the main circuit contact 3 is released by releasing a contact 8b. When a current less than the breaking capacity of the main circuit contact 3, with adding a current through a terminal B from a through type current transformer 6, the main circuit contact 3 is not released but a breaker of a substation is operated. By this means, a short circuit current is disappeared and the main circuit contact 3 is released.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13780477A JPS607887B2 (en) | 1977-11-18 | 1977-11-18 | switchgear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13780477A JPS607887B2 (en) | 1977-11-18 | 1977-11-18 | switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471351A true JPS5471351A (en) | 1979-06-07 |
JPS607887B2 JPS607887B2 (en) | 1985-02-27 |
Family
ID=15207228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13780477A Expired JPS607887B2 (en) | 1977-11-18 | 1977-11-18 | switchgear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607887B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008072852A (en) * | 2006-09-14 | 2008-03-27 | Toshiba Corp | Switch controller, and switchgear |
-
1977
- 1977-11-18 JP JP13780477A patent/JPS607887B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008072852A (en) * | 2006-09-14 | 2008-03-27 | Toshiba Corp | Switch controller, and switchgear |
Also Published As
Publication number | Publication date |
---|---|
JPS607887B2 (en) | 1985-02-27 |
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