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Current transformer verification system

A technology of current transformer and transformer calibrator, which is applied in the field of transformer calibration and achieves the effect of high degree of automation and no need for manual intervention

Inactive Publication Date: 2021-05-28
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] This application provides a current transformer calibration system to solve the problem that the existing calibration system cannot work stably for a long time at 150% of the rated primary current

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  • Current transformer verification system

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Embodiment Construction

[0021] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0022] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...

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Abstract

The invention provides a current transformer verification system, and relates to the technical field of transformer verification. The standard current transformer and the tested current transformer are connected in series, the secondary current of the standard current transformer and the secondary current of the tested current transformer are connected to the transformer calibrator through wires, and the control unit controls the switching of the transformer load box according to an input load switching instruction. A load required by the test is provided for the tested current transformer. Meanwhile, heat dissipation devices are additionally arranged in the standard current transformer, the transformer calibrator and the transformer load box, so that the calibration system can continuously carry out transformer error test and overload capacity test work in 150% In for a long time, the calibration requirement of the 150% In continuous working current transformer is met, the automation degree is high, manual intervention is not needed, and safety and efficiency are realized.

Description

technical field [0001] The present application relates to the technical field of transformer calibration, in particular to a current transformer calibration system. Background technique [0002] Q / CSG1209011-2016 "Technical Specifications for Current Transformers for Metering at 35kV and Below" stipulates that the error test of current transformers requires measuring the errors when the current transformers work at 1% to 120% of the rated current; the overload of current transformers The capability test requires the current transformer to work for a long time at 150% of the rated primary current, and measure its error. The error requirement meets the requirements of the regulation limit. [0003] It can be seen that in the error test and overload capacity test, it is necessary for the current transformer to work for a long time at a maximum of 150% of the rated primary current, and the existing transformer calibration system often cannot meet the requirements of long-term wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 魏龄程富勇蒋婷婷廖耀华陈叶
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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