FIELD TEST ON CASCADE CURRENT TRANSFORMER – EXPERIENCES AND DEVELOPMENT OF GUIDELINES

This month’s Featured Technical Paper is from the Proceedings of the 2022 International Conference of Doble Clients. The paper is titled: Field Test on Cascade Current Transformer – Experiences and Development of Guidelines.

Abstract

Cascade current transformers (CTs) are typically used in high and extra high voltage systems and are made by stacking two or more CTs in series adding complexity for testing and condition assessment. Test standards have been developed based on non-cascade CT’s; therefore, the manufacturers typically test the cascade CT only as one combined device. This paper examines the CT component systems including the magnetic and the insulation systems. It studies the use of tests on the individual CT stacks delivered to the site before assembly and further tests after final assembly. This paper proposes a field test guide for this type of CT.

Doble Service Agreement Clients

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