Purpose

DC Hi-Pot Testing is used for proof testing shielded cables (5kV to 46kV) in the field.  The test can be done at various times such as acceptance of new cable installation, maintenance testing to track insulation degradation and as a pre and post test for splicing existing cables to new ones.  The test will expose gross imperfections that are caused by improper handling, installation techniques or termination workmanship.  A DC Hi-Pot test is not capable of locating the point of failure, rather it gives you an assessment of the whole system.