National power grid Ningxia maintenance company factory-like overhaul workshop maintenance laboratory

The project can meet the external insulation type test of electrical products 750kV, DC±800kV (insulator, lightning arrester, isolatingswitch, GIS, disconnector, current transformer, voltage transformer, etc.) and below grade. Main test items as below:

1.Wet power frequency withstand voltage test of AC 750kV and below grade;

2.External insulation test of electrified instruments and tools AC 750kV and below grade；

3.Characteristic test