GB522276A - Improvements in and relating to electrical measuring instruments - Google Patents

Improvements in and relating to electrical measuring instruments

Info

Publication number
GB522276A
GB522276A GB3538738A GB3538738A GB522276A GB 522276 A GB522276 A GB 522276A GB 3538738 A GB3538738 A GB 3538738A GB 3538738 A GB3538738 A GB 3538738A GB 522276 A GB522276 A GB 522276A
Authority
GB
United Kingdom
Prior art keywords
instrument
coils
rectifiers
frequency
transformer
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
GB3538738A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3538738A priority Critical patent/GB522276A/en
Publication of GB522276A publication Critical patent/GB522276A/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
    • G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc
    • 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

Landscapes

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

Abstract

522,276. Current and voltage measurements ; compensating instruments for temperature errors. GENERAL ELECTRIC CO.. Ltd., TURNER, H. C., and TOMLIN, G. M. Dec. 5, 1938, No. 35387. [Class 37] An instrument for measuring current of high frequency over a considerable range of frequency has the secondary winding of the current transformer formed as an even number of separate substantially similar coils arranged to be connected in opposition to a D.C. instrument through rectifiers. The transformer core is formed in two parts 1, 2 carrying similar coils 3, 4. The parts 1, 2 abut against each other and surround an insulating bush through which passes the conductor 5 forming the primary winding. The windings 3, 4 are connected through dry plate rectifiers 6, 7 to a D.C. measuring instrument 8 so as to oppose each other. A variable resistance 9 is included in the circuit of the winding 4. Damping resistances 10, 11 are connected across the coils 3, 4 and condensers 12, 13 are connected across the instrument 8 to by-pass high-frequency currents. The coils 3, 4 are arranged to give their maximum response at the middle of the frequency range over which the instrument is to operate, tuning condensers being connected across the coils if necessary. The core of the transformer may be laminated or may be a dust iron core. Temperature compensation is effected owing to the rectifiers 6, 7 being in opposition.
GB3538738A 1938-12-05 1938-12-05 Improvements in and relating to electrical measuring instruments Expired GB522276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3538738A GB522276A (en) 1938-12-05 1938-12-05 Improvements in and relating to electrical measuring instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3538738A GB522276A (en) 1938-12-05 1938-12-05 Improvements in and relating to electrical measuring instruments

Publications (1)

Publication Number Publication Date
GB522276A true GB522276A (en) 1940-06-13

Family

ID=10377162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3538738A Expired GB522276A (en) 1938-12-05 1938-12-05 Improvements in and relating to electrical measuring instruments

Country Status (1)

Country Link
GB (1) GB522276A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511562A (en) * 1947-03-25 1950-06-13 Sylvania Electric Prod Linearity correction for diodes
US2546093A (en) * 1946-10-30 1951-03-20 Weston Electrical Instr Corp Field strength meter
WO2009026945A1 (en) * 2007-08-27 2009-03-05 Siemens Aktiengesellschaft Power sensor
WO2019030781A1 (en) * 2017-08-11 2019-02-14 Laki Power EHF. System for generating a power output and corresponding use
CN112034397A (en) * 2020-07-21 2020-12-04 华北电力大学 Transformer frequency response signal detection method based on power frequency zero crossing point
EP4306969A1 (en) * 2022-07-11 2024-01-17 Yokogawa Electric Corporation Current detection apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546093A (en) * 1946-10-30 1951-03-20 Weston Electrical Instr Corp Field strength meter
US2511562A (en) * 1947-03-25 1950-06-13 Sylvania Electric Prod Linearity correction for diodes
WO2009026945A1 (en) * 2007-08-27 2009-03-05 Siemens Aktiengesellschaft Power sensor
CN101784902B (en) * 2007-08-27 2013-03-06 西门子公司 Power sensor
US8405381B2 (en) 2007-08-27 2013-03-26 Siemens Aktiengesellschaft Power sensor for a current carrying conductor
WO2019030781A1 (en) * 2017-08-11 2019-02-14 Laki Power EHF. System for generating a power output and corresponding use
CN111033275A (en) * 2017-08-11 2020-04-17 莱基动力公司 System for generating a power output and corresponding use
US11336198B2 (en) 2017-08-11 2022-05-17 Laki Power EHF. System for generating a power output and corresponding use
CN111033275B (en) * 2017-08-11 2022-10-18 莱基动力公司 System for generating a power output and corresponding use
CN112034397A (en) * 2020-07-21 2020-12-04 华北电力大学 Transformer frequency response signal detection method based on power frequency zero crossing point
EP4306969A1 (en) * 2022-07-11 2024-01-17 Yokogawa Electric Corporation Current detection apparatus

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