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RU2003113031A - DEVICE FOR CHECKING MEASURING CURRENT TRANSFORMERS - Google Patents

DEVICE FOR CHECKING MEASURING CURRENT TRANSFORMERS

Info

Publication number
RU2003113031A
RU2003113031A RU2003113031/28A RU2003113031A RU2003113031A RU 2003113031 A RU2003113031 A RU 2003113031A RU 2003113031/28 A RU2003113031/28 A RU 2003113031/28A RU 2003113031 A RU2003113031 A RU 2003113031A RU 2003113031 A RU2003113031 A RU 2003113031A
Authority
RU
Russia
Prior art keywords
current
measuring current
shunt
measuring
current transformer
Prior art date
Application number
RU2003113031/28A
Other languages
Russian (ru)
Other versions
RU2248003C2 (en
Inventor
Евгений Александрович Ломтев
Дмитрий Иванович Нефедьев
Original Assignee
Пензенский государственный университет
Filing date
Publication date
Application filed by Пензенский государственный университет filed Critical Пензенский государственный университет
Priority to RU2003113031/28A priority Critical patent/RU2248003C2/en
Priority claimed from RU2003113031/28A external-priority patent/RU2248003C2/en
Publication of RU2003113031A publication Critical patent/RU2003113031A/en
Application granted granted Critical
Publication of RU2248003C2 publication Critical patent/RU2248003C2/en

Links

Claims (1)

Устройство для поверки измерительных трансформаторов тока, содержащее источник переменного тока, шунт в цепи первичной обмотки измерительного трансформатора тока, выполненный в виде трех параллельно соединенных резисторов, шунт в цепи вторичной обмотки измерительного трансформатора тока, вспомогательный трансформатор тока, электромагнитный компаратор токов и нулевой индикатор, отличающееся тем, что шунт в цепи первичной обмотки измерительного трансформатора тока выполнен в виде параллельно соединенных двух имитаторов резисторов и резистора с ненормируемой погрешностью с возможностью их отключения из цепи первичной обмотки измерительного трансформатора тока и изменения коэффициента преобразования шунта, при этом их токовые и потенциальные зажимы соединены раздельно, и имитаторы резисторов представляют собой делители тока, первичные обмотки которых подключены последовательно с первичной обмоткой измерительного трансформатора тока, а вторичные обмотки подключены к токовым зажимам резисторов.A device for checking measuring current transformers containing an AC source, a shunt in the primary winding circuit of the measuring current transformer, made in the form of three parallel-connected resistors, a shunt in the secondary winding circuit of the measuring current transformer, an auxiliary current transformer, an electromagnetic current comparator and a zero indicator, different the fact that the shunt in the primary circuit of the measuring current transformer is made in the form of two resistor simulators connected in parallel resistors with non-standard error with the possibility of disconnecting them from the primary winding of the measuring current transformer and changing the shunt conversion coefficient, while their current and potential clamps are connected separately, and the resistor simulators are current dividers, the primary windings of which are connected in series with the primary winding of the current measuring transformer and the secondary windings are connected to the current terminals of the resistors.
RU2003113031/28A 2003-05-05 2003-05-05 Device for calibrating instrument current transformers RU2248003C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2003113031/28A RU2248003C2 (en) 2003-05-05 2003-05-05 Device for calibrating instrument current transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2003113031/28A RU2248003C2 (en) 2003-05-05 2003-05-05 Device for calibrating instrument current transformers

Publications (2)

Publication Number Publication Date
RU2003113031A true RU2003113031A (en) 2004-11-10
RU2248003C2 RU2248003C2 (en) 2005-03-10

Family

ID=35365014

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2003113031/28A RU2248003C2 (en) 2003-05-05 2003-05-05 Device for calibrating instrument current transformers

Country Status (1)

Country Link
RU (1) RU2248003C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103543428B (en) * 2012-07-13 2017-01-25 天门市电工仪器仪表研究所 Miniature current transformer ratio error self-calibration system
CN106324545A (en) * 2016-10-14 2017-01-11 哈尔滨理工大学 Fiber and grating current transformer with nonlinear correction treatment function
CN106990379A (en) * 2017-05-23 2017-07-28 国网天津市电力公司 Current transformer error check test system
CN111044963B (en) * 2019-12-31 2021-12-21 长沙天恒测控技术有限公司 High-frequency current sensor calibration method and device adopting coaxial shunt

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1334099A1 (en) * 1985-11-19 1987-08-30 Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Device for measuring error of high-voltage scale converter
RU2024890C1 (en) * 1990-09-14 1994-12-15 Уфимский государственный авиационный технический университет Device for measuring statistical error of measuring devices
RU2086996C1 (en) * 1994-04-11 1997-08-10 Дмитрий Иванович Нефедьев Device for testing high-voltage measuring voltage transformers
RU2192020C1 (en) * 2001-02-19 2002-10-27 Нефедьев Дмитрий Иванович Device for verifying current transformers
FR2827388B1 (en) * 2001-07-10 2003-11-14 Alstom CIRCUIT FOR MEASURING THE HOMOPOLAR CURRENT OF A THREE-PHASE ELECTRIC CURRENT LINE

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