Gas-insulated equipment

A gas-insulated equipment, comprising:

• voltage-stressed areas to which predetermined voltage is applied, relatively high electric field including the maximum electric field being generated at first voltage-receiving portions of the voltage-stressed areas, and relatively lower electric field than that generated at the first voltage-receiving portions being generated at second voltage-receiving portions at least as a part of the voltage-stressed areas other than the first voltage receiving portions;
• a conductive container for accommodating the voltage-stressed areas;
• and
• insulating gas for electrically insulating the voltage-stressed areas,
• wherein the first voltage-receiving portions include an electrode with at least a portion coated with relatively thick dielectric coatings and at least a portion coated with relatively thin dielectric coatings;
• the second voltage-receiving portions are coated with relatively thin dielectric coatings;
• and
• the relatively thin dielectric coatings are thinner than the relatively thick dielectric coatings.