APPARATUS OF ANALYSIS ON CHARACTERISTICS OF CORE IN CAST RESIN TRANSFORMER

摘要

PURPOSE: A device for analyzing vibration characteristics of a steel core of a molded transformer is provided to analyze vibration characteristics generated by the steel core and wires of the molded transformer and a correlation of the intensity of vibration due to the causes. CONSTITUTION: A device for analyzing vibration characteristics of a steel core of a molded transformer (120) includes an inductive voltage regulator (110), a switch (130), a vibration measuring device (140), and a vibration frequency analyzing device (150). The inductive voltage regulator supplies power to the molded transformer. The switch opens a secondary terminal of the molded transformer, thereby cutting off a load current. The vibration measuring device measures the vibration signals of an outer wall of the high pressure side of the molded transformer generated by the voltages applied to the molded transformer in which the secondary terminal is opened. The vibration frequency analyzing device analyzes the frequencies of the vibration signals and outputs a change in the intensity of the vibration of the core due to a change in the level of the applied voltages per each harmonic wave component of the vibration. [Reference numerals] (110) Inductive voltage controller; (120) Mold transformer; (130) Switch; (140) Vibration measuring unit; (150) Vibration frequency analyzer