Corona Ring and Grading Ring Performance Test Jig

Corona Ring and Grading Ring Performance Test Jig

Test setup for evaluating corona extinction voltage and RIV performance of corona rings and grading rings for HV insulators.

Published: 2026-04-16 | Category: Power Fitting Testers

Technical Specifications

ParameterSpecification
Applied VoltageUp to 400 kV AC
RIV MeasurementPer NEMA 107 and CISPR 18
DetectionUV camera and RIV meter

Key Features

Corona Rings as Critical Insulator Accessories

Corona rings and grading rings distribute the electric field gradient and suppress corona discharge that causes audible noise, radio interference, and long-term insulator degradation.

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