MY132703A - 'live and loaded' testing method for current transformer - Google Patents

'live and loaded' testing method for current transformer

Info

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
Application number
MYPI20033344A
Inventor
Chin Peng Chen
Original Assignee
Promserv Sdn Bhd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Promserv Sdn Bhd filed Critical Promserv Sdn Bhd
Priority to MYPI20033344A priority Critical patent/MY132703A/en
Priority to SG200400758A priority patent/SG112903A1/en
Priority to CNB2004100569038A priority patent/CN100405070C/en
Publication of MY132703A publication Critical patent/MY132703A/en

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.
MYPI20033344A 2003-09-03 2003-09-03 'live and loaded' testing method for current transformer MY132703A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN1603851A (en) 2005-04-06
CN100405070C (en) 2008-07-23
SG112903A1 (en) 2005-07-28

Similar Documents

Publication Publication Date Title
EP1575143A3 (en) Voltage equalizer for battery elements
EP0812058A3 (en) Generating system including generator having permanent magnet
MY113940A (en) Trip device comprising at least one current transformer
WO2002052690A3 (en) Battery charger circuit with low standby power dissipation
EP1378988A3 (en) Switching power supply apparatus
ATE322757T1 (en) METHOD FOR LIMITING AN ELECTRICAL CURRENT THROUGH AN ELECTRICAL COMPONENT AND LIMITING DEVICE
CN101594046B (en) Inrush current limiter
EP1950575A3 (en) Method and apparatus for determining impedance of live-earth loop of electrical power supply
TW200620343A (en) A three-phase current transformer and an electricity station equipped with such a current transformer
CA1258703A (en) Current-sensing arrangement and method for a circuit- interrupter control circuit
MY132703A (en) 'live and loaded' testing method for current transformer
WO2009027373A3 (en) Measuring and/or switching device
WO2004070926A3 (en) Improved method of detecting switching power supply output current
EP0984462A3 (en) Electrical transformer
Paul Failure analysis of dry-type power transformer
WO2003044611A3 (en) Method and device for regulation of electrical voltage
ATE509354T1 (en) DEVICE FOR SUPPLYING AN ELECTRONIC PROTECTIVE DEVICE FOR A LOW VOLTAGE CIRCUIT BREAKER
CN109637787A (en) Transformer excitation flow zero-sequence component suppressing method and inhibition device and transformer
US6181124B1 (en) Eddy current reducing system
ATE3928T1 (en) CIRCUIT ARRANGEMENT FOR LIMITING THE SWITCHING CURRENT IN A CIRCUIT FORMATED FROM A FLOW CURRENT TRANSFORMER, A SWITCHING SEMICONDUCTOR, A PROTECTIVE INDUCTANCE AND AN OVERCURRENT SHUTDOWN IN SERIES CONNECTION.
GB0326725D0 (en) Traction transformer
Miller Design of an AUV recharging system
EP0905972A3 (en) Flyback transformer
Nurbek et al. Test Methods For Current Transformers For Protection With Low Residual Magnetization Intended For Operation Under Transient Short-Circuit Conditions.
CN102570843B (en) For running the method for converter circuit