Failures detection methodic in primary winding voltage transformer type nkf-110

Abstract

This paper describes the methodic used for detecting failures in the primary winding voltage transformer type NKF-110 arising from ferroresonance effect. The technique is based on the combined usage of frequency response analysis method and resistance measurement method with direct current.

Keywords

• voltage measurement transformer
• winding failure
• ferroresonance effect
• frequency response analysis method
• amplitude-frequency characteristics