HV TEST FOR 230 KV GIS 

High Voltage level of injection is below 

Highest voltage level 380 kv is calculated from 80% of factory Hi Voltage injection Level 

304 kV is 80% of 380kv 

170 kv is 1.2X Un/ rot 3

132 kv is  Un/ rot 3 

PD measurement curve at 132kv & 170 voltage level