CrazyEngineers Archive
Old, but evergreen and popular discussions on CrazyEngineers, presented to you in read-only mode.
@KARAD123 • 21 Jul, 2012
WHY ARE ALL THE VALUES OF VOLTAGES OF TRANSMISSIONS ARE IN MULTIPLES OF 11, MEANS 11KV, 33KV, 110KV, 220KV.? MY TEACHER ASKED US THIS QUESTION. PLZ HELP.
@sree_23 • 30 Dec, 2012 why the transformers in transmission step up/down at the voltages which are multiples of 11..,like 33kv,66kv,121kv,etc?
@Kaustubh Katdare • 30 Dec, 2012 Take a look at these threads: https://www.crazyengineers.com/commu...ge-transmissions-are-in-multiple-of-11.56865/
@pinank • 30 Dec, 2012 its been a convention from olden days... there is no specific reason to it...
@Sparker • 10 Jan, 2013 • 1 like its not that it must be multiple of 11. Actually in olden day the used the multiple 1.1 i.e. formfactor for sine wave ,so that computation will be easier on design.its not 11 ,its 1.1 and its not compulsory.Infact not UHV,HVDC are not multiples of 1.1 .
@sree_23 • 12 Jan, 2013 certainly thanks a lot frnds who have replied me with the apt answers😀😀..............
@Jeffrey Arulraj • 12 Jan, 2013
sree_23
certainly thanks a lot frnds who have replied me with the apt answers😀😀..............
Nice to see your active involvement here. But a little of topic It will be even more better If you can avoid SMS language here in the forums
@ani the legend • 13 Jan, 2013
KARAD123
WHY ARE ALL THE VALUES OF VOLTAGES OF TRANSMISSIONS ARE IN MULTIPLES OF 11, MEANS 11KV, 33KV, 110KV, 220KV.? MY TEACHER ASKED US THIS QUESTION. PLZ HELP.
depends on the form factor .... for a.c its 1.11
@sree_23 • 13 Jan, 2013 oh yeah i accept what you say....., i'll do so😀.....
@sree_23 • 13 Jan, 2013 oh yeah i accept what you say to avoid message language ....., i'll do so😀.....
@Akhilesh Garud • 15 Jan, 2013
ani the legend
depends on the form factor .... for a.c its 1.11
is there any exact relation of its dependency on form factor?
@eris • 15 Jan, 2013 I hope it s dependent on RMS value n form factor. . Both r directly proportional to each other
@m.b • 02 Mar, 2013 please frnds try to answer it as I have been lukng for it for a long ago
@mallumatmari • 11 Mar, 2013 Only extra high voltage systems(super grids) have voltages in multiples of 11. I think because those transformers have 1:11 or 11:1 ratio. Simply guessed, don't know anything about that.
@Kaustubh Katdare • 11 Mar, 2013 This is one of the most favorite questions asked by electrical engineers on CrazyEngineers 😀 . Check the following discussion thread -

https://www.crazyengineers.com/threads/why-transmission-voltages-are-multiples-of-11.61487/

I'm merging the discussion threads.
@Jeffrey Arulraj • 12 Mar, 2013 Hey Big guy Why not pinning this thread here That would solve the extra load you guys already have Do so man
The_Big_K
This is one of the most favorite questions asked by electrical engineers on CrazyEngineers 😀 . Check the following discussion thread -

https://www.crazyengineers.com/threads/why-transmission-voltages-are-multiples-of-11.61487/

I'm merging the discussion threads.
@shiv786 • 21 Mar, 2013 form facto is rms value upon avg. value
and value of form factor is 1.11 for transmission
so in my opinion that's the reason.....
@n.rajeev sharma • 27 Mar, 2013 it is due to form factor
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