Interface Meter ……………………………………. 0.2S
Consumer meters
Upto 650 Volts ………………………….……..………1.0S
Above 650 Volts & upto 33kV ……………. …………0.5S
Above 33kV …………………………………………… 0.2S
Energy accounting and audit meters …….……….... 0.2S
Accuracy of meters in Generation and Transmission system will be of 0.2S class.