Why Are India's Transmission Voltages in Multiples of 11?

AI Thread Summary
India's transmission voltages are set in multiples of 11, such as 11kV, 33kV, and 220kV, which may reflect historical practices rather than a standardized global approach. The choice of these values is not directly linked to resistance values, as resistance varies with transmission line lengths. Some participants speculate that the selection could relate to transformer output equations, but this connection is not definitive. There is no clear rationale provided for these specific voltage levels, and they may simply be a product of regional historical development. Overall, the discussion highlights the lack of a universal standard for transmission voltages across different regions.
cutiermn
Messages
7
Reaction score
0
In India why the transmission level voltages are in multiiples of 11 ?

Ex:
440 V, 1.1kV, 6.6kV, 11kV, 33kV, 66kV, 110kV, 220kV, 440kV
 
Engineering news on Phys.org
it's look like that they used the same matricial patern of the resistances
 
Truthlover said:
it's look like that they used the same matricial patern of the resistances

how u r saying... what do u mean by matricial patern, ? can u explain please
 
what i mean is that it's seem like they used the same valors of those used on the resistance. Like 110 ohms or 44kohms
 
Truthlover said:
what i mean is that it's seem like they used the same valors of those used on the resistance. Like 110 ohms or 44kohms

No, that wouldn't be the reason. To cutiermn, I don't know why they use those values. Certainly 110, 220, 440Vrms are pretty standard values used in other parts of the world. I don't know the rationale for the higher voltage choices, though.
 
berkeman said:
No, that wouldn't be the reason. To cutiermn, I don't know why they use those values. Certainly 110, 220, 440Vrms are pretty standard values used in other parts of the world. I don't know the rationale for the higher voltage choices, though.

whether it has any relation with transformer output voltage... because generally transformer output equation deals with 3.33 . So it may be the reason. Am i correct
 
Truthlover said:
what i mean is that it's seem like they used the same valors of those used on the resistance. Like 110 ohms or 44kohms

That may not be reason. because resistance is not a constant one because the transmission line lenghts are varying. so u can't say like that
 
cutiermn said:
In India why the transmission level voltages are in multiiples of 11 ?

Ex:
440 V, 1.1kV, 6.6kV, 11kV, 33kV, 66kV, 110kV, 220kV, 440kV
That's a good question. I did some searching on how transmission line voltages are chosen. The only thing I could find was a little history on http://en.wikipedia.org/wiki/Electric_power_transmission#History". I guess there are no world standards and depends on the history of the region.
 
Last edited by a moderator:

Similar threads

Why are Transmission Voltages in India Multiples of 11kV?
Replies
2
Views
4K
Is Powerline Voltage Always an Integral Multiple of 11?
Replies
1
Views
1K
Engineering Voltage pulse sketches for reflection on a lossless transmission line
Replies
18
Views
2K
High voltage power transmission?
Replies
5
Views
23K
Why does more bandwidth means higher bit rate in digital transmission?
Replies
4
Views
7K
Engineering Why is the voltage source high potential into node 1 at -12 V in this op amp problem?
Replies
15
Views
2K
Why does high voltage transmission reduce Joule losses?
Replies
2
Views
9K
Why would high-voltage transmission cables disturb a car's radio reception?
Replies
2
Views
5K
Why is the resonance condition satisfied in a transverse resonance method?
Replies
5
Views
5K
Maximizing Wired Power Transmission: Resistance, Voltage and Color
Replies
6
Views
3K

Hot Threads

Recent Insights

Back
Top