IRON CORE FASTENER AND TRANSFORMER FOR INSTRUMENT

摘要

PROBLEM TO BE SOLVED: To obtain an iron core fastener with a fastener having a function of low-voltage shield. SOLUTION: The iron core fastener is provided with a pair of fasteners 4 which are opposed across a multilayer iron core 1, and bolts 5 and nuts 6 which pass through the fasteners 4 and the multilayer iron core 1 and fasten the pair of fasteners in the direction of their approach to each other. The fasteners 4 are thick enough for embedding the ends of the bolts 5 and have a round shape on their surface for relaxing the electric field at least at the points where the bolts 5 pass through. The fasteners 4 are also provided with concave portions 9 in which the ends of the bolts 5 are housed at the points where the bolts 5 pass through.