SF6 insulated test transformers are  designed for testing metal-clad switchgear (GIS) and substation equipment. The  conventional transformer can be flanged directly to the GIS. This makes testing  of such installations possible without feeding them trough an air-SF6 bushing.

Therefore the merits of the encapsulation  remains effective also during the test which is essential for PD tests. It is  also a portable and easy maintenance solution to instead of the Oil Filled  cylinder type transformer system and AC resonant test system.

Up to 800kV
            Up to 4A
        PD<2pC