Test method for measuring partial discharges on a single-core cable splice

摘要

The invention relates to a test method for measuring partial discharges on a splice of single-core mid and high voltage submarine cables. Prior to making the cable splice 20, a conductive field control hopper 23 for potential control at the cable end is brought to a parked position 23P on the cable end. The field control funnel 23 is not formed in a field control element. Also, before the cable splice is made, the splice end field controller 25 is placed in park position 25P. Next, an insulation 21 is made on the cable splice and the insulation 21 is provided with a conductive layer 22. Between the cable splice 20 and the cable end, a breakdown-proof, conductive layer-free insulating section 13 is then to be produced. In the next step, the field control element 25 is pushed from its parking position 25 P in its end position on the transition from cable splice 20 to cable end 6. The field control hopper 23 is brought from its parking position 23P in the end position at the cable end. Further, the conductive layer 22 of the cable splice 20 is provided with a measuring contact 40 and the single conductor 7 of the cable 4 and the field control funnel 23 connected to ground potential 36. Subsequently, the partial discharge measurement is performed.