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Why we choose 400kv,220kv,132kv,66kv,33kv transmission
voltages for transmitting power. Why not other voltage
levels.
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Answer Posted / abubakar siddiq
normally generation voltage is 11kv . if we have to transmit
this power to large distance we must increase voltage and
decrease current to reduce I^2R losses so we increase the
voltage to 33kv if distance is not large and if distance is
very large 400kv , 500kv .. These are only standards by IEC ..
any other cab be used. but we use this bcoz standard
transformer , cables , insulators , arrestors for these
nominal voltages are available
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