PROBLEM TO BE SOLVED: To protect electrical equipment from birds and beasts. SOLUTION: A protective device mounted on an outer peripheral surface of a cable 100 has an inner circumference longer than the outer circumference of the cable 100, and has a tangential direction in contact with the outer circumference of its own portion with the cable 100 stored inside as a central axis. It is embedded in the inner peripheral surface of the tubular rotating portion 2 that rotates by the force of the above, and revolves around the cable 100 with the rotation of the tubular rotating portion 2, and the cable 100 A spherical rotating portion 3 that rotates along the outer circumference is provided. [Selection diagram] Fig. 1【課題】鳥獣類から電気設備を防護する。【解決手段】ケーブル１００の外周面上に装着する防護器具において、ケーブル１００の外周よりも長い内周を有し、内部に格納されるケーブル１００を中心軸として、自部の外周に接する接線方向の力で回転する筒状の回転部２と、筒状の回転部２の内周面に埋設され、筒状の回転部２の回転に伴い、ケーブル１００を中心軸として公転し、ケーブル１００の外周に沿って自転する球状の回転部３と、を備える。【選択図】図１
