STATIONARY INDUCTION ELECTRICAL APPARATUS

• Main Authors: KOYAMA HIROSHI, MATSUO TAKAHIDE, KAWAMURA KENICHI, YAMAGISHI AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 14.01.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

PROBLEM TO BE SOLVED: To provide a stationary induction electrical apparatus which improves a core vibration attenuation property and is capable of reducing core excitation noise.SOLUTION: The stationary induction electrical apparatus includes: a core which includes a plurality of core legs formed by laminating electromagnetic steel plates and a core yoke formed by laminating electromagnetic steel plates for joining the plurality of core legs; a core fastening fitting for fixing a junction of the core yoke and the core legs while fastening it in a direction of lamination of the electromagnetic steel plates; a coil; a tank; and an insulation plate installed between the core fastening fitting and the core yoke. The insulation plate positioned in the junction of the core legs and the core yoke includes a dug-out part or notched part in a recessed shape, and a vibration-proof material is disposed in the dug-out part or notched part in the recessed shape. 【課題】鉄心振動減衰性に優れ鉄心励磁騒音低減が可能な静止誘導電器を提供すること。【解決手段】本発明の静止誘導電器は、上記課題を解決するために、電磁鋼板を積層して形成される複数の鉄心脚及び電磁鋼板を積層して形成され、前記複数の鉄心脚を接合する鉄心ヨークから成る鉄心と、前記鉄心ヨークと前記鉄心脚の接合部を、前記電磁鋼板の積層方向に締め付け固定する鉄心締付金具と、巻線と、タンクと、前記鉄心締付金具と前記鉄心ヨークの間に設置される絶縁板とを備え、前記鉄心脚と前記鉄心ヨークとの接合部に位置する前記絶縁板に凹状のくり抜き部或いは切り欠き部を設け、該凹状のくり抜き部或いは切り欠き部に防振材が配置されていることを特徴とする。【選択図】図１