A GIS (Gas Insulated Switchgear) Hall Ventilation Duct is a crucial component of the ventilation system designed specifically for a GIS hall. These halls house sensitive high-voltage electrical equipment insulated by SF6 gas. The ventilation system, including the ductwork, plays a vital role in maintaining a controlled environment by:

• Removing heat generated by the equipment: Ensuring optimal operating temperatures.
• Maintaining air quality: Filtering out dust and other contaminants that could affect the equipment.
• Preventing the buildup of SF6 gas: In case of minor leaks, the ventilation system helps to keep the concentration of the insulating gas within safe limits.
• Providing fresh air: Ensuring a suitable environment for personnel who may need to enter the hall for maintenance or inspections.
• Maintaining positive pressure: Often, these systems are designed to keep the GIS hall at a slightly higher pressure than the surroundings to prevent the ingress of dust and humidity.

The ductwork is a network of conduits that distributes conditioned air into the hall and extracts air to be filtered or expelled. The design and materials of these ducts are carefully considered to meet the specific requirements of a GIS environment.