MAGNETICALLY SHIELDED CURRENT TRANSFORMER

To provide a magnetically shielded current transformer that can shield a magnetic field applied from an outside and can be reduced in size.SOLUTION: A magnetically shielded current transformer 100 includes a magnetic core module including a ring-shaped core 110 in which a plate-shaped ribbon is wound many times, a bobbin 120 that houses a core, and a coil 130 wound along an outer peripheral surface of the bobbin, a shielding member 150 made of iron that surrounds an outer peripheral surface and both side surfaces of the magnetic core module but has a through hole in a center of both side surfaces, and an exterior case 160 that protects the magnetic core module and the shielding member.EFFECT: Since a magnetic field applied from the outside forms a magnetic path through the shielding member, an external magnetic field is not transmitted to the magnetic core module, and influence of the external magnetic field can be stably blocked.SELECTED DRAWING: Figure 4 【課題】外部から印加される磁界を遮蔽させると共に小型化できる磁気遮蔽型変流器を提供する。【解決手段】磁気遮蔽型変流器１００は、板状のリボンが多数回巻き取られたリング状のコア１１０、コアを収容するボビン１２０、ボビンの外周面に沿って巻線されるコイル１３０を含むマグネチックコアモジュール、マグネチックコアモジュールの外周面および両側面を取り囲むものの、両側面の中央に貫通口を具備した鉄からなる遮蔽部材１５０と、マグネチックコアモジュール及び遮蔽部材を保護するための外装ケース１６０を含む。【効果】外部から印加される磁界が遮蔽部材を通じて磁気経路を形成するので外部磁界がマグネチックコアモジュールに伝達されず、安定して外部磁界の影響を遮断させることができる。【選択図】図４