Gas-insulated electric apparatus and manufacturing method of gas-insulated electric apparatus

A gas-insulated electric apparatus, comprising:

• a sealed container made of metal;
• a high-voltage conductor, housed within the sealed container, to receive voltage;
• an insulating support member to insulate the high-voltage conductor from the sealed container and support the high-voltage conductor to the sealed container;
• and
• a nonlinear-resistance film covering at least a portion of an inner surface of the sealed container, the portion being on a lower side of the inner surface with respect to the high-voltage conductor,
• wherein the nonlinear-resistance film is formed by particles of a nonlinear-resistance material and an insulating material, the particles of the nonlinear-resistance material being dispersed in the insulating material, and
• the particles of the nonlinear-resistance material are placed in the insulating material such that a spacing between neighboring particles of the nonlinear-resistance material is smaller than a size of a conductive foreign object so that one or more of the particles of the nonlinear-resistance material is in constant contact with the conductive foreign object trapped inside the sealed container.