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1993•IEEE Transactions on Instrumentation and MeasurementRequires access

High-current high-precision openable-core AC and AC/DC current transformers

E. So, S. Ren, D.A. Bennett

Open publisher page 44 citations

Abstract

The application of an electronic technique, which greatly increases the apparent permeability of the magnetic core of a current transformer, to high-current high-precision openable-core AC and AC/DC current transformers is described. The openable-core AC/DC current transformer can be used to measure accurately alternating current only or direct current only, or both alternating and direct currents simultaneously. Test results of two prototypes, 5000 A/5 A openable-core AC and 2000 A/1 A openable-core AC/DC current transformers, indicate an AC current measurement accuracy of both types of transformers on the order of 10 p.p.m. and a DC current transformer of better than 100 p.p.m.>

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What this paper is about

The application of an electronic technique, which greatly increases the apparent permeability of the magnetic core of a current transformer, to high-current high-precision openable-core AC and AC/DC current transformers is described. The openable-core AC/DC current transformer can be used to measure accurately alternating current only or direct current only, or both alternating and direct currents simultaneously. Test results of two prototypes, 5000 A/5 A openable-core AC and 2000 A/1 A openable-core AC/DC current transformers, indicate an AC current measurement accuracy of both types of transformers on the order of 10 p.p.m. and a DC current transformer of better than 100 p.p.m.>

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OpenAlex reports 44 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The application of an electronic technique, which greatly increases the apparent permeability of the magnetic core of a current transformer, to high-current high-precision openable-core AC and AC/DC current transformers is described. The openable-core AC/DC current transformer can be used to measure accurately alternating current only or direct current only, or both alternating and direct currents simultaneously. Test results of two prototypes, 5000 A/5 A openable-core AC and 2000 A/1 A openable-core AC/DC current transformers, indicate an AC current measurement accuracy of both types of transformers on the order of 10 p.p.m. and a DC current transformer of better than 100 p.p.m.>

Key concepts: Current transformer, Direct current, Alternating current, Electrical engineering, Transformer, Magnetic core, Electronic engineering, Physics

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