Hitachi, Ltd.

Tatsuo Honda

Shigeo Amagi

Mitsuru Onoda

Tomoya Tsunoda

Keiichi Morikawa

In order to provide an electric machine winding having an insulating layer excellent in electric characteristics and an insulating layer of an electric machine winding excellent in electric characteristics, a high-thermal-conductivity insulating layer is formed around the peripheral portion of a winding conductor by the use of a high-thermal-conductivity insulating tape having a mica layer , a reinforcing material layer , and a high-thermal-conductivity filler layer , wherein the amount of resin of the mica layer makes up 10 wt % to 25 wt % of the total weight of the insulating material and wherein the amount of resin of the high-thermal-conductivity filler layer makes up 10 wt % to 25 wt % of the total weight of the insulating material.

Insulating material and electric machine winding and method for manufacturing the same

In order to provide windings for electrical rotating machines having an insulating film superior in electrical characteristics, a high heat conductive insulating film is formed at outer periphery of wound conductor using a high heat conductive insulating tape, which includes a mica layer a reinforcement layer and a high heat conductive filler layer wherein the resin content in each layer of the mica layer and the high heat conductive filler layer is specified in the range of 10-25% by weight based on the whole weight of the material. 1-80% by weight of said filler is spherical.

Insulating material, windings using same, and a manufacturing method thereof

In order to provide windings for electrical rotating machines having an insulating film superior in electrical characteristics, a high heat conductive insulating film,is formed at outer periphery of wound conductor,using a high heat conductive insulating tape, which includes a mica layer,, a reinforcement layer,, and a high heat conductive filler layer,, wherein the resin content in each layer of the mica layer,and the high heat conductive filler layer,is specified in the range of 10-25% by weight based on the whole weight of the material. 1-80% by weight of said filler is spherical.

Insulating material windings using same and a manufacturing method thereof

The high thermoconductive insulating film 11 was formed around the outer periphery of the wound conductors 10, using the high thermoconductive insulating tape 1 comprising the mica layer 3, the reinforcement layer 5, and the high thermoconductive filler layer 7, wherein the resin content in each layer of the mica layer 3 and the high thermoconductive filler layer 7 is specified to the range of 10-25% by weight of the total weight of the material.

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Hitachinaka, Japan

Tatsuo Honda