MY135177A - Clamp-on ct - Google Patents

Clamp-on ct

Info

Publication number
MY135177A
MY135177A MYPI20031728A MY135177A MY 135177 A MY135177 A MY 135177A MY PI20031728 A MYPI20031728 A MY PI20031728A MY 135177 A MY135177 A MY 135177A
Authority
MY
Malaysia
Prior art keywords
current transformer
signal conditioning
conditioning circuit
clamp
secondary coil
Prior art date
Application number
Inventor
Kaushik Ghosh
Original Assignee
Pri Ltd
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 Pri Ltd filed Critical Pri Ltd
Publication of MY135177A publication Critical patent/MY135177A/en

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
    • G01R15/186—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using current transformers with a core consisting of two or more parts, e.g. clamp-on type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase AC
    • H01F38/28—Current transformers
    • H01F38/32—Circuit arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Amplifiers (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

A SPLIT CORE CURRENT TRANSFORMER (10), PREFERABLY OF THE CLAMP-ON TYPE COMPRISING A CORE SPLIT INTO TWO SECTIONS, A SECONDARY COIL AND A SIGNAL CONDITIONING CIRCUIT (20), WHEREIN THE SIGNAL CONDITIONING CIRCUIT IS CONNECTED TO THE SECONDARY COIL SO AS TO IMPROVE THE PERFORMANCE OF THE CURRENT TRANSFORMER BY REDUCING THE TOTAL RESISTANCE OF THE CURRENT TRANSFORMER. THE SIGNAL CONDITIONING CIRCUIT PREFERABLY COMPRISES AN OPERATIONAL AMPLIFIER (3) AND AT LEAST ONE RESISTIVE ELEMENT (2) ARRANGED IN THE FEEDBACK LOOP OF THE AMPLIFIER.FIGURE 2
MYPI20031728 2002-05-10 2003-05-08 Clamp-on ct MY135177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0210799A GB2388914B (en) 2002-05-10 2002-05-10 Clamp-on ct

Publications (1)

Publication Number Publication Date
MY135177A true MY135177A (en) 2008-02-29

Family

ID=9936473

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20031728 MY135177A (en) 2002-05-10 2003-05-08 Clamp-on ct

Country Status (4)

Country Link
GB (1) GB2388914B (en)
MY (1) MY135177A (en)
TR (1) TR200300636A2 (en)
ZA (1) ZA200303603B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008138873A1 (en) * 2007-05-09 2008-11-20 Epcos Ag Broadband detecting circuit
EP2163906B1 (en) 2008-09-16 2014-02-26 Mitutoyo Corporation Method of detecting a movement of a measuring probe and measuring instrument
EP2199733B1 (en) * 2008-12-17 2013-02-13 Mitutoyo Corporation Electric circuit and method of operating a measuring instrument
EP2211187B1 (en) 2009-01-14 2013-10-02 Mitutoyo Corporation Method of actuating a system, apparatus for modifying a control signal for actuation of a system and method of tuning such an apparatus
WO2012022377A1 (en) * 2010-08-18 2012-02-23 Siemens Aktiengesellschaft Measurement input circuit of a measuring or protective device
CZ2013142A3 (en) * 2013-02-26 2014-04-16 Vysoké Učení Technické V Brně Measuring current transformer
RU2548911C2 (en) 2013-04-29 2015-04-20 Вячеслав Васильевич Самокиш Transformer for current metering without circuit disruption (versions)
GB2524521A (en) * 2014-03-25 2015-09-30 Voltech Instr Ltd Apparatus and methods for measuring electrical current

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051566A (en) *
CH564836A5 (en) * 1972-06-14 1975-07-31 Gen Electric
US4198595A (en) * 1978-09-05 1980-04-15 General Electric Company Apparatus and method of phase shift compensation of an active terminated current transformer
JPS5760265A (en) * 1980-09-29 1982-04-12 Anritsu Corp Current voltage converter for ac input
US4939451A (en) * 1987-08-24 1990-07-03 Metricom, Inc. Wide dynamic range a.c. current sensor
FR2638235B1 (en) * 1988-10-21 1991-04-19 Robert Jean METHOD AND DEVICES FOR GENERATING A SECONDARY ALTERNATING CURRENT OF WHICH THE INTENSITY IS PROPORTIONAL TO THAT OF A PRIMARY CURRENT AND COUNTERS EQUIPPED WITH SUCH DEVICES
NO175394C (en) * 1991-07-01 1994-10-05 Abb En As Device for measuring current
EP0825449A1 (en) * 1996-08-19 1998-02-25 Siemens Aktiengesellschaft Current measuring method and device
JP2000258469A (en) * 1999-03-11 2000-09-22 Mitsubishi Electric Corp Power system protection and control equipment

Also Published As

Publication number Publication date
GB2388914A (en) 2003-11-26
GB2388914B (en) 2005-09-28
GB0210799D0 (en) 2002-06-19
ZA200303603B (en) 2003-11-10
TR200300636A2 (en) 2003-12-22

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