GB2137764B - Polarity-sensitive d.c. current transformer - Google Patents

Polarity-sensitive d.c. current transformer

Info

Publication number
GB2137764B
GB2137764B GB08405938A GB8405938A GB2137764B GB 2137764 B GB2137764 B GB 2137764B GB 08405938 A GB08405938 A GB 08405938A GB 8405938 A GB8405938 A GB 8405938A GB 2137764 B GB2137764 B GB 2137764B
Authority
GB
United Kingdom
Prior art keywords
polarity
sensitive
current transformer
transformer
current
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
Application number
GB08405938A
Other versions
GB8405938D0 (en
GB2137764A (en
Inventor
John Desmond Ainsworth
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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
Priority claimed from GB838309559A external-priority patent/GB8309559D0/en
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB08405938A priority Critical patent/GB2137764B/en
Publication of GB8405938D0 publication Critical patent/GB8405938D0/en
Publication of GB2137764A publication Critical patent/GB2137764A/en
Application granted granted Critical
Publication of GB2137764B publication Critical patent/GB2137764B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/14—Indicating direction of current; Indicating polarity of voltage
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
GB08405938A 1983-04-08 1984-03-07 Polarity-sensitive d.c. current transformer Expired GB2137764B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08405938A GB2137764B (en) 1983-04-08 1984-03-07 Polarity-sensitive d.c. current transformer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838309559A GB8309559D0 (en) 1983-04-08 1983-04-08 Dc current transformer circuits
GB08405938A GB2137764B (en) 1983-04-08 1984-03-07 Polarity-sensitive d.c. current transformer

Publications (3)

Publication Number Publication Date
GB8405938D0 GB8405938D0 (en) 1984-04-11
GB2137764A GB2137764A (en) 1984-10-10
GB2137764B true GB2137764B (en) 1987-03-04

Family

ID=26285766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08405938A Expired GB2137764B (en) 1983-04-08 1984-03-07 Polarity-sensitive d.c. current transformer

Country Status (1)

Country Link
GB (1) GB2137764B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2100135C (en) * 1992-07-10 1997-11-04 Makoto Kawakami Dc current sensor
FR2744529B1 (en) * 1996-02-01 1999-02-26 Robert Jean METHOD AND DEVICE FOR MEASURING LOW VALUE DC ELECTRIC CURRENT
DE19845778B4 (en) 1998-09-22 2004-04-29 Siemens Ag Process for mapping direct currents and direct current converter for carrying out the process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552815A (en) * 1941-11-12 1943-04-27 British Thomson Houston Co Ltd Improvements relating to electric transformers
US2509738A (en) * 1948-05-29 1950-05-30 Gen Electric Balanced magnetic amplifier
US3105154A (en) * 1960-01-20 1963-09-24 Daystrom Inc Blocking oscillator comparator
GB1084566A (en) * 1965-04-14 1967-09-27 Zd Y Prumyslove Automatisace Transductor sensing device for the measurement of direct current and indication of the polarity thereof
US3500195A (en) * 1967-06-20 1970-03-10 Westinghouse Electric Corp Current transductor having instantaneous response

Also Published As

Publication number Publication date
GB8405938D0 (en) 1984-04-11
GB2137764A (en) 1984-10-10

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Legal Events

Date Code Title Description
PG Patent granted