Air-cooled air-to-air bushing

A method of providing an air flow through a ventilation channel within an air-to-air through-wall bushing, the bushing being arranged through a wall and comprising:

• a conductor;
• insulation surrounding the conductor;
• a ventilation inlet at a first end of the bushing;
• and
• a ventilation outlet at a second end of the bushing;
• the method comprising:
• providing a pressure difference between a first pressure on a first side of the wall and a second pressure on a second side of the wall;
• and
• allowing ambient air to pass through the ventilation channel within the bushing, from the ventilation inlet to the ventilation outlet, driven by the provided pressure difference.

A hall arrangement comprising:

• a hall including a wall having a first side with a first pressure and a second side with a second pressure different from the first pressure to provide a pressure difference;
• and
• an air-to-air through-wall bushing arranged through the wall, the bushing comprising:
• a conductor;
• insulation surrounding the conductor;
• a ventilation inlet at a first end of the bushing;
• and
• a ventilation outlet at a second end of the bushing;
• said inlet and outlet configured to allow cooling air to pass through a ventilation channel within the bushing driven by the pressure difference.