GB1419023A - Electronically-compensated current transformers - Google Patents

Electronically-compensated current transformers

Info

Publication number
GB1419023A
GB1419023A GB759573A GB759573A GB1419023A GB 1419023 A GB1419023 A GB 1419023A GB 759573 A GB759573 A GB 759573A GB 759573 A GB759573 A GB 759573A GB 1419023 A GB1419023 A GB 1419023A
Authority
GB
United Kingdom
Prior art keywords
electronically
current transformers
compensated current
feb
compensated
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
GB759573A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1419023A publication Critical patent/GB1419023A/en
Expired 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
    • G01R15/183—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
    • 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
    • G01R15/08—Circuits for altering the measuring range
    • 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
    • H01F27/42—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils
    • H01F27/422—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers
    • H01F27/427—Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils for instrument transformers for current transformers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

1419023 Measuring current SIEMENS AG 15 Feb 1973 [18 Feb 1972] 7595/73 Heading G1U A current transformer 1, compensated for ratio errors by a feedback arrangement incorporating an amplifier 2, has its measurement range extended by the provision of a shunt resistor 8.
GB759573A 1972-02-18 1973-02-15 Electronically-compensated current transformers Expired GB1419023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722207610 DE2207610A1 (en) 1972-02-18 1972-02-18 ARRANGEMENT FOR INCREASING THE MEASURING RANGE OF ELECTRONICALLY COMPENSATED CURRENT CONVERTERS

Publications (1)

Publication Number Publication Date
GB1419023A true GB1419023A (en) 1975-12-24

Family

ID=5836319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB759573A Expired GB1419023A (en) 1972-02-18 1973-02-15 Electronically-compensated current transformers

Country Status (9)

Country Link
JP (1) JPS4894828A (en)
CH (1) CH553414A (en)
DE (1) DE2207610A1 (en)
ES (1) ES411725A1 (en)
FR (1) FR2172323A1 (en)
GB (1) GB1419023A (en)
IT (1) IT979055B (en)
NL (1) NL7301232A (en)
SE (1) SE376803B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199149A (en) * 1986-12-22 1988-06-29 Gen Electric Electric current sensor
GB2538816A (en) * 2015-05-26 2016-11-30 Secure Int Holdings Pte Ltd Electricity meter with isolated shunt

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2045952B (en) * 1979-03-15 1983-01-12 Tokyo Shibaura Electric Co Current transforming circuits
CH661814A5 (en) * 1983-06-01 1987-08-14 Landis & Gyr Ag MEASURING VOLTAGE CONVERTER HIGH ACCURACY.
DE3634221A1 (en) * 1986-10-08 1988-04-14 Bbc Brown Boveri & Cie ELECTRIC CONVERTER
FR2690993A1 (en) * 1992-05-06 1993-11-12 Europ Agence Spatiale Galvanically-isolated DC current pulse intensity measurement appts. e.g. for DC=DC converter or radar - has transformer with first sec. in parallel with resistor across which voltage is measured by amplifier, and second transformer sec. which is in series with further resistor and fed by amplifier output.
FR2704652B1 (en) * 1993-04-30 1995-06-23 Zellweger Sauter En Sa CURRENT SENSOR FOR ALTERNATING CURRENTS.
CN103000361A (en) * 2012-11-22 2013-03-27 南京江北自动化技术有限公司 Current transformer
CN113241245B (en) * 2021-05-10 2022-03-11 大连北方互感器集团有限公司 Current transformer with constant-value resistor and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199149A (en) * 1986-12-22 1988-06-29 Gen Electric Electric current sensor
GB2538816A (en) * 2015-05-26 2016-11-30 Secure Int Holdings Pte Ltd Electricity meter with isolated shunt
GB2538816B (en) * 2015-05-26 2017-08-16 Secure Int Holdings Pte Ltd Electricity meter with isolated shunt

Also Published As

Publication number Publication date
NL7301232A (en) 1973-08-21
FR2172323A1 (en) 1973-09-28
CH553414A (en) 1974-08-30
JPS4894828A (en) 1973-12-06
SE376803B (en) 1975-06-09
DE2207610A1 (en) 1973-08-30
ES411725A1 (en) 1976-01-01
IT979055B (en) 1974-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
CSNS Application of which complete specification have been accepted and published, but patent is not sealed