This refers to a 60 Hz HV system based on IEC standard which has been specified with the following voltage and insulation ratings :-
- Nominal or Operating system voltage = 34.5 kV rms (L-L)
- Highest or Rated System Voltage = 36.0 kV rms (L-L)
- 1 Minute PF voltage withstand = 70 kV rms
- Basic...