why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?
Answer Posted / ami wald
This Asia standard taken from previous British Commenwealth Countries.
In Continent Europe which has strong industry and different view on everything including Electricity, because the Electricity was born here we have another standard and over voltage levels. We forgot all not industrial time electricity for standardization and we use first 50 Hz (cycles) and voltages as 1100 kV, 750 kV, 500 kV, 400 kV, 220kV, 110 kV, 30 kV for cast iron furnaces only, 20 kV, 15 kV, 10kV for big motors above 250 kWatts only, 6kV for compressors and big motors only, and 0,660 kV , 400 Volts and 230 Volts at homes. US using for lighting in high rise buildings 277 Volts;
These voltages have been standardized in all United Europe. Another voltages are outside of Europe used in non-industriialised countries. So if the India want to take grow in industry it shall follow the European Union rules. and stop to use 33kV 22kV, 11kV, becasue these voltages are not typical and they are manufactured on individual request. It means they are more costly.
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