Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc.

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Why high Voltages come in multiple of 11, like 11 KV, 33KV,
66 KV, 132 KV etc.

Question Posted / manoj gupta

11 Answers
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Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / bhanu prakash

ac voltage of the system is measure in rms voltages,
so rms voltage= avg. voltage * form factor.
form factor of sinusoidal voltage is 1.11
since every avg. voltage multiplied by factor 1.11, high
voltage come in multiple of 11 only

Is This Answer Correct ?

58 Yes

11 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / shibuss

I dis agree with all the answers above.
There is no mathematical/electrical reason.
If form factor (1.11) or multiple is the reason what about
400kv and 765kV (Highest transmission voltages in India)

Is This Answer Correct ?

9 Yes

0 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / raju ravula

rmsvoltage/averagevoltage=form factor,in
transmisson,distibution systems voltages are rms only,the
form factir of sinesoidal wave is 1.11

Is This Answer Correct ?

4 Yes

4 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sandeepraj

i agree with ans 9
it not like multiple factors, they are just standerd values

Is This Answer Correct ?

0 Yes

0 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / vinjam sasikumar

rms value = form factor * avg value
basically thee value of form factor is 1.11
so the ratings are in multiples of 11 kv
When the capacity increases, this is not true. It becomes 800kva, 1000kva

Is This Answer Correct ?

0 Yes

3 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sanju

yes i agree with the 1st answer. its almost the perfect answer

Is This Answer Correct ?

0 Yes

4 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / shanku

needed authenticated scientifically pl.

Is This Answer Correct ?

1 Yes

7 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / susai

i agree with answer no.4. it is absolutely correct.

Is This Answer Correct ?

1 Yes

12 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / guru

Its the british standard of making it in multiples of 11.

But as per US standard the HV voltages dont come in
multiples of 11

Is This Answer Correct ?

4 Yes

20 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sujeet kumar singh

i agreed with answer no 1 , but main reson is scientist Sir
G.V. volta invent 1.1 v battery so on behalf of sir volta
we multyply by 11 in volt.

Is This Answer Correct ?

2 Yes

28 No

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