Intensive insulation bus duct

The utility model discloses an intensive insulation bus duct, which comprises a busbar protecting shell and a busbar unit arranged in the busbar protecting shell, wherein the busbar unit comprises a plurality of busbars, and each busbar comprises a busbar conductor and an insulating layer which coats the busbar conductor. The plurality of busbars are arranged in parallel side by side to form an integral whole. The intensive insulation bus duct is internally provided with a circulating pipeline, the circulating pipeline is filled with water or gas, and heat inside the intensive bus duct is transferred to the circulating pipeline and taken out of the intensive bus duct through the circulating pipeline, thereby playing a role of cooling. Therefore, fire resistance of the bus duct can be improved, the continuous power supply ability of the intensive insulation bus duct in a fire disaster is improved, and the continuous power supply time of the intensive insulation bus duct in the fire disaster is prolonged.