What is the transmission voltage of Indian power grid?

The single-phase voltage is 230 volts, the three-phase voltage is 400 volts, and the frequency is 50 hertz.

The voltage levels of India's high voltage power grid are 66KV and below, 132kV, 220kV, 400kV, 500kV (DC) and 765kV.

132kV and above lines are defined as transmission networks, and 132kV and below lines are defined as distribution networks.