(57) A high voltage insulator (5) is designed to give an even electric field distribution
over the insulator. To this end there are arranged high resistive paths (7, 25) within
the insulating body (6, 22). These resistive paths are connected to the conductors
which are to be insulated. To remove heat generated in the high-resistive paths from
the insulator, the insulating body (6, 22) and/or the resistive path (7, 25) material
is a fluid (liquid or gas). Preferably both the insulating body and the high resistive
paths consist of liquids, and the liquid in the resistive path is preferably pure,
de-ionized water which circulates, through an external pumping-, cooling-, and de-ionizing
unit (50). The insulator according to this invention is particularly applicable for
test terminations when testing high voltage cables (20) with DC.
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