why we calculate only 11kv 33kv and 132kv ... why not 10kv 20kv 45kv?

why we calculate only 11kv 33kv and 132kv ... why not 10kv
20kv 45kv?

Question Posted / ramu

3 Answers
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why we calculate only 11kv 33kv and 132kv ... why not 10kv 20kv 45kv?..

Answer / jwalith

hi,
the voltages here all are multiples of 11 because of the form factor(1.11).that is the reason we find 11,33,66...132,440,765..etc

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why we calculate only 11kv 33kv and 132kv ... why not 10kv 20kv 45kv?..

Answer / guest

its indian standard

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why we calculate only 11kv 33kv and 132kv ... why not 10kv 20kv 45kv?..

Answer / jatin patel

Alternator output voltages are typically restricted to around
25 kV to limit their physical size and the centrifugal forces
to which they are subjected. In the UK, this voltage is then
typically raised to 400 kV for transmission.

The voltages to which you are referring to are typical of the
voltages used in the UK's high-voltage distribution system.
'Grid' substations typically transform transmission voltages
of 132 kV down to 33 kV (or, less commonly, 66 kV), and
'primary' substations then transform distribution voltages of
33 kV down to 11 kV.

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