TW200710406A - Leakage current detection apparatus and leakage current detection method - Google Patents
Leakage current detection apparatus and leakage current detection methodInfo
- Publication number
- TW200710406A TW200710406A TW095124687A TW95124687A TW200710406A TW 200710406 A TW200710406 A TW 200710406A TW 095124687 A TW095124687 A TW 095124687A TW 95124687 A TW95124687 A TW 95124687A TW 200710406 A TW200710406 A TW 200710406A
- Authority
- TW
- Taiwan
- Prior art keywords
- leakage current
- current detection
- signal
- detected
- amplified
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title abstract 3
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A leakage current detection apparatus for detecting a leakage current occurring at an electric line under test and caused by the capacitance relative to the ground. A leakage current I is detected from an electric line (A) under test, and the detected leakage current I is amplified by a first amplifier circuit (11). The signal amplified by the first amplifier circuit (11) is further amplified by a second amplifier circuit (13). On the basis of the signal amplified by the first amplifier circuit (11) and the signal amplified by the first and second amplifier circuits (11, 13), a multiplexer (20) selects a signal most suitable to be input to an A/D converter (21). A voltage applied to the electric line (A) under test is detected and the detected voltage is divided, after which the multiplexer (20) selects a signal most suitable to be input to the A/D converter (21). On the basis of the digital signal converted by the A/D converter (21), an arithmetic circuit (22) performs a predetermined calculation, thereby detecting a leakage current Igc caused by the capacitance relative to the ground.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005197949 | 2005-07-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200710406A true TW200710406A (en) | 2007-03-16 |
TWI299792B TWI299792B (en) | 2008-08-11 |
Family
ID=37604555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW095124687A TW200710406A (en) | 2005-07-06 | 2006-07-06 | Leakage current detection apparatus and leakage current detection method |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5216958B2 (en) |
TW (1) | TW200710406A (en) |
WO (1) | WO2007004698A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI474014B (en) * | 2013-05-27 | 2015-02-21 | Tanashin Denki Co | Leakage current calculating device and leakage current calculating method |
TWI512310B (en) * | 2012-12-24 | 2015-12-11 | Foxnum Technology Co Ltd | Three-phase power abnormality detecting device |
TWI557412B (en) * | 2014-09-26 | 2016-11-11 | Tanashin Denki Co | Leakage current calculation device and leakage current calculation method |
TWI708950B (en) * | 2018-08-09 | 2020-11-01 | 日商日立製作所股份有限公司 | Diagnosis device and method of electric machine, and rotating electric machine |
TWI762235B (en) * | 2021-03-12 | 2022-04-21 | 台達電子工業股份有限公司 | Insulation resistance detection system for electric vehicle and method of detecting the same in insulation resistance |
CN115951262A (en) * | 2023-03-13 | 2023-04-11 | 青岛鼎信通讯股份有限公司 | Natural fault leakage current detection method applied to power distribution area |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2683641C (en) * | 2007-04-10 | 2016-08-16 | Exelixis, Inc. | Methods of treating cancer using pyridopyrimidinone inhibitors of pi3k alpha |
FR2947054A1 (en) * | 2009-06-23 | 2010-12-24 | Schneider Electric Ind Sas | DEVICE AND METHOD FOR INDICATING ELECTRICAL DEFECTS, ASSEMBLY AND ELECTRICAL TABLE COMPRISING SUCH A DEVICE |
TW201220631A (en) * | 2010-11-02 | 2012-05-16 | Eneraiser Technology Co Ltd | Failure detection and protection circuit for direct current power supply system |
US9239586B2 (en) | 2013-12-04 | 2016-01-19 | Industrial Technology Research Institute | Leakage-current start-up reference circuit |
JP6718394B2 (en) * | 2017-02-06 | 2020-07-08 | 株式会社日立産機システム | Insulation monitoring device and insulation monitoring system |
KR101877799B1 (en) * | 2017-12-28 | 2018-07-13 | 에이디파워 주식회사 | Device for Detecting Insulation Resistance |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004012147A (en) * | 2002-06-03 | 2004-01-15 | Kawamura Electric Inc | Insulation monitoring device and insulation monitoring method |
JP4398198B2 (en) * | 2003-08-20 | 2010-01-13 | 中国電力株式会社 | Insulation degradation region diagnosis system and method for electric wire or cable |
JP2005140532A (en) * | 2003-11-04 | 2005-06-02 | Toyoji Ahei | Device and method for calculating phase angle, device and method for detecting leakage current |
-
2006
- 2006-07-06 JP JP2007523446A patent/JP5216958B2/en not_active Expired - Fee Related
- 2006-07-06 WO PCT/JP2006/313505 patent/WO2007004698A1/en active Application Filing
- 2006-07-06 TW TW095124687A patent/TW200710406A/en not_active IP Right Cessation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI512310B (en) * | 2012-12-24 | 2015-12-11 | Foxnum Technology Co Ltd | Three-phase power abnormality detecting device |
TWI474014B (en) * | 2013-05-27 | 2015-02-21 | Tanashin Denki Co | Leakage current calculating device and leakage current calculating method |
TWI557412B (en) * | 2014-09-26 | 2016-11-11 | Tanashin Denki Co | Leakage current calculation device and leakage current calculation method |
TWI708950B (en) * | 2018-08-09 | 2020-11-01 | 日商日立製作所股份有限公司 | Diagnosis device and method of electric machine, and rotating electric machine |
TWI762235B (en) * | 2021-03-12 | 2022-04-21 | 台達電子工業股份有限公司 | Insulation resistance detection system for electric vehicle and method of detecting the same in insulation resistance |
CN115951262A (en) * | 2023-03-13 | 2023-04-11 | 青岛鼎信通讯股份有限公司 | Natural fault leakage current detection method applied to power distribution area |
Also Published As
Publication number | Publication date |
---|---|
WO2007004698A1 (en) | 2007-01-11 |
JP5216958B2 (en) | 2013-06-19 |
TWI299792B (en) | 2008-08-11 |
JPWO2007004698A1 (en) | 2009-01-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |