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GB2388914B - Clamp-on ct - Google Patents

Clamp-on ct

Info

Publication number
GB2388914B
GB2388914B GB0210799A GB0210799A GB2388914B GB 2388914 B GB2388914 B GB 2388914B GB 0210799 A GB0210799 A GB 0210799A GB 0210799 A GB0210799 A GB 0210799A GB 2388914 B GB2388914 B GB 2388914B
Authority
GB
United Kingdom
Prior art keywords
clamp
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB0210799A
Other versions
GB2388914A (en
GB0210799D0 (en
Inventor
Kaushik Ghosh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Secure Meters UK Ltd
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
Priority to GB0210799A priority Critical patent/GB2388914B/en
Publication of GB0210799D0 publication Critical patent/GB0210799D0/en
Priority to MYPI20031728 priority patent/MY135177A/en
Priority to TR2003/00636A priority patent/TR200300636A2/en
Priority to ZA200303603A priority patent/ZA200303603B/en
Publication of GB2388914A publication Critical patent/GB2388914A/en
Application granted granted Critical
Publication of GB2388914B publication Critical patent/GB2388914B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
GB0210799A 2002-05-10 2002-05-10 Clamp-on ct Expired - Fee Related GB2388914B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0210799A GB2388914B (en) 2002-05-10 2002-05-10 Clamp-on ct
MYPI20031728 MY135177A (en) 2002-05-10 2003-05-08 Clamp-on ct
TR2003/00636A TR200300636A2 (en) 2002-05-10 2003-05-09 Current transformer (CT) surrounding the wire.
ZA200303603A ZA200303603B (en) 2002-05-10 2003-05-09 Clamp-on CT.

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
GB0210799D0 GB0210799D0 (en) 2002-06-19
GB2388914A GB2388914A (en) 2003-11-26
GB2388914B true GB2388914B (en) 2005-09-28

Family

ID=9936473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0210799A Expired - Fee Related GB2388914B (en) 2002-05-10 2002-05-10 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
CZ304406B6 (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

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051566A (en) *
DE2329254A1 (en) * 1972-06-14 1974-01-03 Gen Electric CURRENT CONVERTER WITH ACTIVE LOAD SHUTTER
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
FR2638235A1 (en) * 1988-10-21 1990-04-27 Robert Jean Method and devices for generating a secondary alternating current whose strength is proportional to that of a primary current, and meters fitted with these devices
US4939451A (en) * 1987-08-24 1990-07-03 Metricom, Inc. Wide dynamic range a.c. current sensor
WO1993001502A1 (en) * 1991-07-01 1993-01-21 Abb Energi As Arrangement in a current detection circuit
EP0825449A1 (en) * 1996-08-19 1998-02-25 Siemens Aktiengesellschaft Current measuring method and device
GB2347755A (en) * 1999-03-11 2000-09-13 Mitsubishi Electric Corp Protection system with smaller current detection transformer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051566A (en) *
DE2329254A1 (en) * 1972-06-14 1974-01-03 Gen Electric CURRENT CONVERTER WITH ACTIVE LOAD SHUTTER
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
FR2638235A1 (en) * 1988-10-21 1990-04-27 Robert Jean Method and devices for generating a secondary alternating current whose strength is proportional to that of a primary current, and meters fitted with these devices
WO1993001502A1 (en) * 1991-07-01 1993-01-21 Abb Energi As Arrangement in a current detection circuit
EP0825449A1 (en) * 1996-08-19 1998-02-25 Siemens Aktiengesellschaft Current measuring method and device
GB2347755A (en) * 1999-03-11 2000-09-13 Mitsubishi Electric Corp Protection system with smaller current detection transformer

Also Published As

Publication number Publication date
TR200300636A2 (en) 2003-12-22
GB2388914A (en) 2003-11-26
MY135177A (en) 2008-02-29
ZA200303603B (en) 2003-11-10
GB0210799D0 (en) 2002-06-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20200510