CN101309006A - Selective leakage protective detection method and apparatus under coal mine - Google Patents
Selective leakage protective detection method and apparatus under coal mine Download PDFInfo
- Publication number
- CN101309006A CN101309006A CNA2008101231898A CN200810123189A CN101309006A CN 101309006 A CN101309006 A CN 101309006A CN A2008101231898 A CNA2008101231898 A CN A2008101231898A CN 200810123189 A CN200810123189 A CN 200810123189A CN 101309006 A CN101309006 A CN 101309006A
- Authority
- CN
- China
- Prior art keywords
- branch road
- sequence current
- tested
- zero sequence
- mutual inductor
- 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)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101231898A CN101309006B (en) | 2008-06-16 | 2008-06-16 | Selective leakage protective detection method and apparatus under coal mine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101231898A CN101309006B (en) | 2008-06-16 | 2008-06-16 | Selective leakage protective detection method and apparatus under coal mine |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101309006A true CN101309006A (en) | 2008-11-19 |
CN101309006B CN101309006B (en) | 2010-06-09 |
Family
ID=40125284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2008101231898A Active CN101309006B (en) | 2008-06-16 | 2008-06-16 | Selective leakage protective detection method and apparatus under coal mine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101309006B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104467444A (en) * | 2013-09-16 | 2015-03-25 | 遵义长征电器智控设备有限责任公司 | Line fracture protection printed board |
CN107683418A (en) * | 2015-06-19 | 2018-02-09 | 三菱电机株式会社 | Leakage current detection means |
CN115588964A (en) * | 2022-12-12 | 2023-01-10 | 杭州红芯微电子信息科技有限公司 | Threshold voltage correctable full-waveband leakage detection protection circuit |
-
2008
- 2008-06-16 CN CN2008101231898A patent/CN101309006B/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104467444A (en) * | 2013-09-16 | 2015-03-25 | 遵义长征电器智控设备有限责任公司 | Line fracture protection printed board |
CN104467444B (en) * | 2013-09-16 | 2017-04-12 | 遵义长征电器智控设备有限责任公司 | Line fracture protection printed board |
CN107683418A (en) * | 2015-06-19 | 2018-02-09 | 三菱电机株式会社 | Leakage current detection means |
CN107683418B (en) * | 2015-06-19 | 2020-11-03 | 三菱电机株式会社 | Leakage current detection device |
CN115588964A (en) * | 2022-12-12 | 2023-01-10 | 杭州红芯微电子信息科技有限公司 | Threshold voltage correctable full-waveband leakage detection protection circuit |
CN115588964B (en) * | 2022-12-12 | 2023-03-03 | 杭州红芯微电子信息科技有限公司 | Threshold voltage correctable full-waveband leakage detection protection circuit |
Also Published As
Publication number | Publication date |
---|---|
CN101309006B (en) | 2010-06-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103344884B (en) | Power overhead network fault two-frequency signal detection and location method and special orientator thereof | |
CN101975911B (en) | Earth fault judging method for overhead line fault indicator | |
CN104101812A (en) | Single-phase grounding fault detection and positioning method and system for low-current grounding power distribution network | |
CN104076243A (en) | Method for detection and indication of single-phase ground faults of small current grounding power distribution network and device | |
CN102640374A (en) | Line fault detector | |
CN105116283A (en) | Downhole power cable insulation monitoring device | |
CN105116300A (en) | Downhole cable insulation online monitoring system | |
CN101309006B (en) | Selective leakage protective detection method and apparatus under coal mine | |
CN205333777U (en) | Phase to earth fault positioner | |
CN204167872U (en) | Underground coal mine electrical network selective earth leakage protection checkout gear | |
CN104934925A (en) | Selective electric leakage protection system for low-voltage power grid of underground coal mine | |
CN102221664A (en) | Grounding fault detection method of overhead high voltage circuit | |
CN103954876A (en) | Distribution network single phase earth fault detection method based on transient component | |
CN103884959A (en) | Power supply line fault locating instrument and fault locating method | |
CN203825142U (en) | Power supply line fault locating instrument | |
CN203561722U (en) | Two-frequency signal detection position indicator for electricity overhead line | |
CN202583341U (en) | Device capable of detecting dc looped-network failures of dc power supply systems | |
CN201210615Y (en) | Selective leakage protective detection apparatus under coal mine | |
CN107219443A (en) | A kind of transient state recording indicator | |
CN203133182U (en) | Ground capacitance detection circuit for DC power system | |
CN203287462U (en) | Electric leakage lockout detection circuit | |
CN202600093U (en) | DC earthing point detector for electrical network line | |
CN205231703U (en) | System based on optics current transformer improve reliability of relay protection | |
CN201315471Y (en) | High-voltage live displaying and locking device | |
CN105486936B (en) | Uninterruptible power supply with scarce zero curve detection circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C53 | Correction of patent for invention or patent application | ||
CB03 | Change of inventor or designer information |
Inventor after: Yang Yunfu Inventor after: Yang Bo Inventor before: Yang Yunfu |
|
COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YANG YUNFU TO: YANG YUNFU YANG BO |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huainan Anhui Huaguang mining Electronic Technology Research Institute Assignor: Yang Yunfu Contract record no.: 2011340000478 Denomination of invention: Selective leakage protective detection method and apparatus under coal mine Granted publication date: 20100609 License type: Exclusive License Open date: 20081119 Record date: 20111219 |