Development and application of insulated shading mask for cable testing

Cables in distribution network had to carry on withstand voltage to check the insulation of the cable itself and its accessories during put into operation or during the preventing testing. But most of the cable pothead and its leads are keep in the switchgear cabinet where the clearances between phases or to ground are limited due to the compact design of the cabinets. The clearances cannot meet the safety requirements during high voltage testing. So an insulated shading mask was developed and had proven it meets all the safety requirements.