2，Transformer partial discharge test and ac withstand voltage test.
Withstand voltage test on GIS \ instrument transformer \ Switch \ other device with voltage up to 500kV grade.
A ultra-large capacity test can be performed
4，Projects include measurement of transmission line parameter、Laying of Power Cable、 fault diagnosis、the handover debugging、on-line monitoring and others, with voltage up to 500kV grade
With ability AC withstand voltage test on Long distance cable