The invention relates to a high pressure, high voltage penetrator assembly for subsea, topside or land based use, wherein the assembly is upright attachable to a wet gas and/or liquid handling compressor or pump or to/from a transformer, and wherein the assembly includes a penetrator unit for feed-through of electric power to a motor of the compressor or pump or to/from the transformer; a funnel shaped housing with a housing chamber, the penetrator unit being located at an upper end of the chamber; a grid located inside the chamber transversely of a longitudinal axis of the chamber, the penetrator unit being located above the grid, a filter located in the chamber below the grid and above an inlet to a housing of the motor or to/from a housing of the transformer, and a sensor unit extending into the chamber from the penetrator unit and towards, but spaced from the grid.