Meidensha Corporation

Japan Ae Power Systems Corporation

Technical Consulting Tanimizu Ltd.

Yoshiyuki Tanimizu

Toru Tanimizu

Toshimasa Fukai

Akira Nishijima

Yuichi Nishikiori

Toshinori Tatsumi

Takuya Shimokawa

Hiroshi Fujimaki

Osamu Takeya

Toyohisa Tsuruta

A vacuum capacitor is provided with a vacuum container accommodating a fixed electrode and movable electrode to ensure capacitance, and a vacuum expansion container communicating with the vacuum container in series. The vacuum container is provided with a movable support part supporting the movable electrode, a movable conductor supporting the movable support part to enable reciprocation in the axial direction of the vacuum container, a fixed conductor supporting the fixed electrode, and a main bellows interposed between the movable support part and the movable conductor. The vacuum expansion container is provided with a movable part arranged coaxially with the movable support part, and an adjustment bellows interposed between the movable part and the inner end surface of the vacuum expansion container. The movable support part and movable part are connected by an insulating connection rod arranged coaxially with the fixed electrode and movable electrode.

Vacuum capacitor

A vacuum-capacitor-type instrument voltage transformer () is equipped with a main capacitor () and an insulating tube () that accommodates the main capacitor (). A voltage dividing capacitor () is connected to the main capacitor () in series. The main capacitor () is equipped with a plurality of vacuum capacitors () to () that are connected in series. A high-voltage-side electrode () is provided on a high-voltage side of the insulating tube (), and a ground-side electrode () is provided on its low-voltage side. The high-voltage-side electrode () is equipped with a high-voltage shield (). Electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor ()) disposed on the high-voltage side is set to be greater than electrostatic capacity of the vacuum capacitor (for example, the vacuum capacitor ()) disposed on the low-voltage side.

Transformer for vacuum capacitor type instrument

An attraction coil, a repulsion coil and a plunger are disposed in a magnetic path of an electromagnetic device. An starting flux generating section is disposed between the attraction coil and the repulsion coil in the magnetic path. A magnetic flux of the starting flux generating section is repulsed magnetically by a magnetic flux of the repulsion coil at a part of the magnetic path to start the plunger. The plunger is attracted to one of first and second magnetic path parts by electromagnetic forces generated from magnetic fluxes of the attraction coil and the repulsion coil.

Electromagnetic device

Growing community of inventors

Numadu, Japan

Yoshiyuki Tanimizu