Description : This system is applicable for evacuating large transformers or for maintaining large transformers on site. It can operate normally without cooling water due to perfect vacuum pump. So it is especially suitable for site working without cooling water source or for large transformer unmovable. All parts are mounted on a movable trolley, integrated controlling cabinet with 30 meter cables. Configured with top brand pump, stainless pipeline, manual ball valve and mini compressor, the whole system is compact and convenient for outside work.