In order to fulfill the increasing requirements on the insulation test on the 1 100 kV ultra-high voltage（UHV） gas insulated switchgear（GIS）

and to solve the problems of low efficiency

low automaticity and complicate cooperative work of the traditional bulk test equipment

an integrated UHV insulation test platform is proposed.The function and realization of the mechanical

hydraumatic and electrical part of the platform are introduced

and the design scheme using a SF6 test reactor with an internal integrated capacitor voltage divider is proposed.Suggestions on the components where the electric field is concentrated and the design of the voltage divider are put forward by electric field simulation.The design and simulation results show that the test platform meets the requirements of insulation test and voltage measurement on 1 100 kV UHV GIS devices.Besides

the platform takes small floor space

is convenient and quick to use

and reduces the manpower and the amount of cooperative work

which provides a new design for the UHV insulation test device in the future.