ZA200203953B - Detection transformer for an earth leakage protection device and protection device comprising such a transformer. - Google Patents
Detection transformer for an earth leakage protection device and protection device comprising such a transformer.Info
- Publication number
- ZA200203953B ZA200203953B ZA200203953A ZA200203953A ZA200203953B ZA 200203953 B ZA200203953 B ZA 200203953B ZA 200203953 A ZA200203953 A ZA 200203953A ZA 200203953 A ZA200203953 A ZA 200203953A ZA 200203953 B ZA200203953 B ZA 200203953B
- Authority
- ZA
- South Africa
- Prior art keywords
- transformer
- protection device
- detection
- earth leakage
- detection transformer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
- G01R15/185—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core with compensation or feedback windings or interacting coils, e.g. 0-flux sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Protection Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The detection transformer which is used with excitation and processing units is toroidal and contains the protected conductors. The transformer magnetic circuit is based on iron with crystals which do not exceed 100 nanometers in thickness and has a static or low frequency magnetic cycle (21) which is virtually rectangular. The coercive force (Hc) in the magnetic cycle is preferably less than 1.5 Amperes/meter. An Independent claim is also included for a differential protection equipment which uses the detection transformer and magnetic circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0106674A FR2824951B1 (en) | 2001-05-21 | 2001-05-21 | DETECTION TRANSFORMER FOR DIFFERENTIAL PROTECTION DEVICE AND PROTECTION DEVICE COMPRISING SUCH A TRANSFORMER |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA200203953B true ZA200203953B (en) | 2002-11-21 |
Family
ID=8863499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA200203953A ZA200203953B (en) | 2001-05-21 | 2002-05-17 | Detection transformer for an earth leakage protection device and protection device comprising such a transformer. |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1260821B1 (en) |
CN (1) | CN1241216C (en) |
AT (1) | ATE311607T1 (en) |
DE (1) | DE60207632T2 (en) |
ES (1) | ES2252413T3 (en) |
FR (1) | FR2824951B1 (en) |
ZA (1) | ZA200203953B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2862423B1 (en) * | 2003-11-18 | 2005-12-30 | Schneider Electric Ind Sas | DEVICE AND METHOD FOR DIFFERENTIAL PROTECTION AND ELECTRICAL APPARATUS COMPRISING SUCH A DEVICE |
IT1392716B1 (en) * | 2009-01-13 | 2012-03-16 | Seneca S R L | METHOD OF MEASUREMENT OF AN ELECTRIC CURRENT |
CN102881437A (en) * | 2011-07-12 | 2013-01-16 | 三信国际电器上海有限公司 | Current transformer for detecting aftercurrent, and aftercurrent protection device |
DE102013009587A1 (en) * | 2012-06-14 | 2013-12-19 | Robert Bosch Gmbh | Measuring device for detecting saturation of magnetic core of transformer in direct current static converter, has measuring coil detecting induced voltage, arranged at measuring bridge and formed as winding distributed over bridge length |
CN102937682A (en) * | 2012-11-29 | 2013-02-20 | 东莞市拓诚实业有限公司 | Detection equipment and detection method for leakage protector |
FR3050081B1 (en) * | 2016-04-12 | 2018-03-23 | Schneider Electric Industries Sas | DEVICE FOR DETECTING A DEFAULT CURRENT |
CN113809716B (en) * | 2021-09-25 | 2023-09-15 | 浙江巨磁智能技术有限公司 | B-type leakage protection method realized by pure hardware |
DE102022129457B4 (en) * | 2022-11-08 | 2024-05-29 | Bender Gmbh & Co. Kg | Electrical circuit arrangement and method for galvanically isolated, universal current sensitive differential current measurement |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4529931A (en) * | 1983-04-07 | 1985-07-16 | Ford Motor Company | Single-coil current measuring circuit |
US4881989A (en) * | 1986-12-15 | 1989-11-21 | Hitachi Metals, Ltd. | Fe-base soft magnetic alloy and method of producing same |
JP2501860B2 (en) * | 1988-03-15 | 1996-05-29 | 日立金属株式会社 | Magnetic sensor and current sensor, and device using the same |
JPH03218475A (en) * | 1989-11-06 | 1991-09-26 | Nkk Corp | Method and device for measuring current |
JPH07128373A (en) * | 1993-11-02 | 1995-05-19 | Sumitomo Special Metals Co Ltd | Dc current sensor |
FR2733374B1 (en) * | 1995-04-18 | 1997-06-06 | Schneider Electric Sa | DIFFERENTIAL PROTECTION DEVICE SENSITIVE TO PULSED CURRENTS |
FR2774822B1 (en) * | 1998-02-11 | 2000-03-17 | Schneider Electric Ind Sa | DIFFERENTIAL PROTECTION DEVICE |
-
2001
- 2001-05-21 FR FR0106674A patent/FR2824951B1/en not_active Expired - Fee Related
-
2002
- 2002-04-29 DE DE60207632T patent/DE60207632T2/en not_active Expired - Lifetime
- 2002-04-29 EP EP02354072A patent/EP1260821B1/en not_active Expired - Lifetime
- 2002-04-29 ES ES02354072T patent/ES2252413T3/en not_active Expired - Lifetime
- 2002-04-29 AT AT02354072T patent/ATE311607T1/en not_active IP Right Cessation
- 2002-05-15 CN CN02119801.2A patent/CN1241216C/en not_active Expired - Fee Related
- 2002-05-17 ZA ZA200203953A patent/ZA200203953B/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2824951A1 (en) | 2002-11-22 |
EP1260821A1 (en) | 2002-11-27 |
DE60207632T2 (en) | 2006-07-06 |
ES2252413T3 (en) | 2006-05-16 |
DE60207632D1 (en) | 2006-01-05 |
EP1260821B1 (en) | 2005-11-30 |
CN1241216C (en) | 2006-02-08 |
FR2824951B1 (en) | 2003-07-25 |
CN1387213A (en) | 2002-12-25 |
ATE311607T1 (en) | 2005-12-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0875901A3 (en) | Magnetic thin-film memory element utilizing GMR effect, and magnetic thin-film memory | |
GB2339294B (en) | Differential solenoidal magnetic field sensing device and method for manufacturing the same | |
AU1677900A (en) | Method and device for non-contact detection of external electric or magnetic fields | |
DK1254473T3 (en) | Electronically changing micromagnetic holder relay and method for operating the same | |
HK1077634A1 (en) | Measurement probe and authentication device and method comprising the same | |
GB9422714D0 (en) | Current transducers | |
ZA200203953B (en) | Detection transformer for an earth leakage protection device and protection device comprising such a transformer. | |
NO914195L (en) | SECURITY SYSTEM DETECTION DEVICE | |
ID20296A (en) | MAGNETIC PARTICLES, SUBTRATES CONSIST OF SUCH PARTICLES, SECURITY DOCUMENTS AND METHODS FOR DETECTING SUCH PARTICLES | |
TW200517047A (en) | Active shielding for a circuit comprising magnetically sensitive materials | |
MY126038A (en) | Ultrafast magnetization reversal | |
Feero | Electric and magnetic field management | |
EP0901100A3 (en) | Magnetic identification element | |
Janesky | Impact of external magnetic fields on MRAM products | |
ATE464574T1 (en) | SQUID MAGNETOMETER | |
UA29644A (en) | Method for manufacture of a magneto-electric slow-down device coil for wagons | |
DK165888A (en) | DEVICE FOR PROTECTION AGAINST MAGNETIC FLUX IN THE ENVIRONMENTAL ENVIRONMENT OF OBJECTS WHICH MAY BE CHANGED BY MOVING WITH MAGNETIC FLUX IS ISSUE WITH A MEDIUM WHICH MAGNETIC INFORMATION MAY BE REGISTERED | |
Lovejoy | Essential magnetic characteristics for magnetic particle inspection | |
KR960014933A (en) | Magnetic particle detection magnetizer | |
Saito et al. | Critical behavior of transverse and longitudinal ac susceptibilities in a random anisotropy magnet a-Dy16Fe84 | |
Velickovic et al. | Design of ellipsoidal form permanent magnets | |
EP0646548A3 (en) | Magnetic circuit and a magnetization processing apparatus. | |
Gobov et al. | The methods for visualization of magnetic field using ferrite garnet monocrystalline films. | |
KR950004815U (en) | Magnetic Anisotropy Mitigation Device for Sputtering Equipment | |
Bere | A new permeability for permanent magnets and another theorem of refraction in isotropic materials with permanent magnetization |