MY132703A - 'live and loaded' testing method for current transformer - Google Patents
'live and loaded' testing method for current transformerInfo
- Publication number
- MY132703A MY132703A MYPI20033344A MYPI20033344A MY132703A MY 132703 A MY132703 A MY 132703A MY PI20033344 A MYPI20033344 A MY PI20033344A MY PI20033344 A MYPI20033344 A MY PI20033344A MY 132703 A MY132703 A MY 132703A
- Authority
- MY
- Malaysia
- Prior art keywords
- secondary circuit
- current transformer
- voltage
- live
- loaded
- Prior art date
Links
Abstract
THERE IS PROVIDED A METHOD FOR TESTING THE INTEGRITY OF A CURRENT TRANSFORMER FOR USE IN A PROTECTION SYSTEM FOR AN ELECTRICAL INSTALLATIONM THE CURRENT TRANSFORMER HAVING PRIMARY WINDINGS DEFINING A PRIMARY CIRCUIT AND SECONDARY WINDINGS DEFINING A SECONDARY CIRCUIT. THE METHOD COMPRISES THE STEPS OF APPLYING A VOLTAGE (V) TO THE SECONDARY CIRCUIT; APPLYING AN INCREASING RESISTANCE LOAD TO THE SECONDARY CIRCUIT; OBTAINING THE MAGNETIZING CURRENT (IM) OF THE SECONDARY CIRCUIT;PLOTTING A GRAPH OF VOLTAGE (V) VERSUS MAGNETIZING CURRENT (IM) IN THE SECONDARY CIRCUIT; AND IDENTIFYING A KNEE-POINT AT WHICH AN XINCREASE IN VOLTAGE (V) RESULTS IN A YINCREASE IN MAGNETIZING CURRENT (IM) IN THE SECONDARY CIRCUIT, WHEREIN X% IS FROM 5 TO 20 AND Y% IS FROM 30 TO 70.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20033344A MY132703A (en) | 2003-09-03 | 2003-09-03 | 'live and loaded' testing method for current transformer |
SG200400758A SG112903A1 (en) | 2003-09-03 | 2004-02-17 | 'live and loaded' testing method for current transformer |
CNB2004100569038A CN100405070C (en) | 2003-09-03 | 2004-08-19 | Running and loading detection method for converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20033344A MY132703A (en) | 2003-09-03 | 2003-09-03 | 'live and loaded' testing method for current transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
MY132703A true MY132703A (en) | 2007-10-31 |
Family
ID=34676029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI20033344A MY132703A (en) | 2003-09-03 | 2003-09-03 | 'live and loaded' testing method for current transformer |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN100405070C (en) |
MY (1) | MY132703A (en) |
SG (1) | SG112903A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101344565B (en) * | 2008-09-04 | 2010-05-12 | 铁道部运输局 | Current transformer detection method and system |
CN109326428B (en) * | 2018-10-29 | 2020-03-10 | 李晓明 | Magnetically controlled reactor and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2364900A1 (en) * | 1973-12-28 | 1975-07-03 | Klein Kg Elektro Geraete G | Inverter overcurrent protection with magnetic voltage limiter - has choke to increase overcurrent spike duration to trip thermal fuse |
SU991542A1 (en) * | 1981-03-20 | 1983-01-23 | Предприятие "Донтехэнерго" Производственного Объединения По Наладке, Совершенствованию Технологии И Эксплуатации Электростанций И Сетей "Союзтехэнерго" | Device for relay protection with testing it under load |
JPS6126425A (en) * | 1984-07-13 | 1986-02-05 | 株式会社明電舎 | Device for protecting transformer |
JP2997515B2 (en) * | 1990-07-27 | 2000-01-11 | 株式会社日立製作所 | Transformer protection system and protection method |
CN2248380Y (en) * | 1995-10-06 | 1997-02-26 | 西安电力电容器厂 | Current mutual inductor with function of on-line detection |
JP2001231159A (en) * | 2000-02-17 | 2001-08-24 | Hitachi Ltd | Grounding protection method and device of low-voltage ac bus |
AU2001255552A1 (en) * | 2000-04-21 | 2001-11-07 | American Superconductor Corporation | Method and apparatus for detecting ground fault current |
US6590380B2 (en) * | 2000-12-11 | 2003-07-08 | Thomas G. Edel | Method and apparatus for compensation of current transformer error |
US6680616B2 (en) * | 2001-02-15 | 2004-01-20 | Kuhlman Electric Corporation | In-service testing of current transformers |
-
2003
- 2003-09-03 MY MYPI20033344A patent/MY132703A/en unknown
-
2004
- 2004-02-17 SG SG200400758A patent/SG112903A1/en unknown
- 2004-08-19 CN CNB2004100569038A patent/CN100405070C/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN1603851A (en) | 2005-04-06 |
CN100405070C (en) | 2008-07-23 |
SG112903A1 (en) | 2005-07-28 |
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