Question

Which of the following is INCORRECT regarding the classification of substations on the basis of operating voltage?
1. Ultra - low voltage substation
2. Ultra - high voltage substation
3. High voltage substation
4. Extra - high voltage substation

Answer 1

Correct Answer - Option 1 : Ultra - low voltage substation

Classification of substations based on the voltages:

High voltage (HV) AC - 69 kV, 115 kV, 138 kV, 161 kV, 230 kV

Extra-high voltage (EHV) AC - 345 kV, 500 kV, 765 kV

Ultra-high voltage (UHV) AC - 1100 kV, 1500 kV

Direct-current high voltage (DC) - ±250 kV, ±400 kV, ±500 kV

There is no substation named 'Ultra-low-voltage substation', So it will be the incorrect statement.