Figure 11.
Two electric field maps compare horizontal and vertical configurations at 2 per cent relative humidity.The horizontal configuration records a maximum electric field of 2.89 kilovolts per millimetre. The vertical configuration records a maximum electric field of 2.34 kilovolts per millimetre. Both maps depict the conductor passing through the conical spacer inside the cylindrical enclosure. Electric field intensity concentrates along the conductor and near the junction between the conductor and spacer. The electric field scale ranges from 0 to 2.5 kilovolts per millimetre at intervals of 0.5 kilovolts per millimetre.

Electric field distribution for SF6 gas with a 2% relative humidity content, including heat convection and thermal radiation in a horizontally and vertically arranged HVDC GIL

Source: Authors’ own work

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