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High-Precision Self-Calibrating Current Transformer With Stray Capacitances Control.

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Title: High-Precision Self-Calibrating Current Transformer With Stray Capacitances Control.
Authors: Slomovitz, Daniel1 dslomovitz@ute.com.uy, Santos, Alejandro1, Sandler, Rogelio1 rogelio@sandler.com.uy, Barreto, Gabriela1
Source: IEEE Transactions on Instrumentation & Measurement. 2021, Vol. 70, p1-9. 9p.
Subjects: Stray currents, Current transformers (Instrument transformer), Electric capacity, Electronic equipment, Magnetic cores
Abstract: This article shows the design of a simple construction two-stage current transformer with ratios from 5 A:5 A to 2000 A:5 A. It can be self-calibrated. Primary windings are separated into sectors to allow series–parallel configurations. Beginning with 5 A:5 A-ratio self-calibration, the higher ranges relate their errors to this first one, considering parasitic effects. Stray capacitances are considered as the major source of error when changing the configuration of the primary winding. New methods to calculate and compensate them are proposed, and electronic devices are used to reduce ratio error and phase displacement to few $\mu \text{A}$ /A and $\mu $ rad. The participation of this transformer as the UTE standard in an international comparison confirmed the calculated performance. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 170415034
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  Data: <searchLink fieldCode="DE" term="%22Stray+currents%22">Stray currents</searchLink><br /><searchLink fieldCode="DE" term="%22Current+transformers+%28Instrument+transformer%29%22">Current transformers (Instrument transformer)</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+capacity%22">Electric capacity</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+equipment%22">Electronic equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+cores%22">Magnetic cores</searchLink>
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  Label: Abstract
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  Data: This article shows the design of a simple construction two-stage current transformer with ratios from 5 A:5 A to 2000 A:5 A. It can be self-calibrated. Primary windings are separated into sectors to allow series–parallel configurations. Beginning with 5 A:5 A-ratio self-calibration, the higher ranges relate their errors to this first one, considering parasitic effects. Stray capacitances are considered as the major source of error when changing the configuration of the primary winding. New methods to calculate and compensate them are proposed, and electronic devices are used to reduce ratio error and phase displacement to few $\mu \text{A}$ /A and $\mu $ rad. The participation of this transformer as the UTE standard in an international comparison confirmed the calculated performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Instrumentation & Measurement is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1109/TIM.2020.3045840
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Stray currents
        Type: general
      – SubjectFull: Current transformers (Instrument transformer)
        Type: general
      – SubjectFull: Electric capacity
        Type: general
      – SubjectFull: Electronic equipment
        Type: general
      – SubjectFull: Magnetic cores
        Type: general
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      – TitleFull: High-Precision Self-Calibrating Current Transformer With Stray Capacitances Control.
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            NameFull: Santos, Alejandro
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            NameFull: Sandler, Rogelio
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            – D: 01
              M: 07
              Text: 2021
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              Y: 2021
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              Value: 70
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