TS Liew
Electrical
- Apr 27, 2020
- 25
Dear friends,
For calculation of max fault current of 3 phase transformer. The usual method of using the % positive seq Z & the rated MVA is common. How should I calculate the max single phase to ground fault current? Say I have a 220KV/6.9KV, 70MVA, 12% zero seq Z assume +,-,0 seq Z to be the same.
Shuen Liew
TS Liew (Electrical testing, Commissioning, Power system studies)
For calculation of max fault current of 3 phase transformer. The usual method of using the % positive seq Z & the rated MVA is common. How should I calculate the max single phase to ground fault current? Say I have a 220KV/6.9KV, 70MVA, 12% zero seq Z assume +,-,0 seq Z to be the same.
Shuen Liew
TS Liew (Electrical testing, Commissioning, Power system studies)