As far as distribution systems are concerned, if the declared voltage is 230 V, then the highest voltage of the consumer should NOT exceed _________ while the lowest voltage of the consumer should NOT be less than ________.

Concept:

As per IE Rule 1956, the voltage at the distribution level must be ± 6% of the rated or declared voltage, and the frequency must be ± 3% of the supply frequency.

Calculation:

Given, Rated voltage = 230 V

V_max = 6% of 230 = 230 + 13.8 = 243.8 V

Vmin = 6% of 230 = 230 - 13.8 = 216.2 V

Additional Information Supply frequency in India = 50 Hz

f_max = 3% of 50 = 50 + 1.5 = 51.5 Hz

f_min = 3% of 50 = 50 - 1.5 = 48.5 Hz