Question about power voltage in Scotland

Sergei Troizky

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• Apr 19, 2007

• #1

Our customer in Scotland specified the power for new project as 400VAC 3-phase + neutral, 50Hz.
I've never heard of such voltage. May it be a mistake?

 

Jon R

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• Apr 19, 2007

• #2

No mistake. We used to be on 230V 1Ph+N and 415V 3Ph+N but due to harmonisation with the rest of Europe, we now run on 230V 1Ph+N and 400V 3Ph+N.


Jon.

 

Jon R

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• Apr 19, 2007

• #3

Sorry meant used to be on 240V 1Ph+N. Doh!

 

Kidblue

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• Apr 19, 2007

• #4

Yep! And that applies to the whole of the UK....

 

Sergei Troizky

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• Apr 19, 2007

• #5

Thanks for replies!

 

Jim Dungar

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• Apr 19, 2007

• #6

In the spirit of harmonization, the old 415V systems have been lowered to and the 380V ones raised to 400V.

 

Kidblue

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• Apr 20, 2007

• #7

Directives are a wonderful thing!! The reality is that you can still put a DVM on any supply in the 4 corners of the UK and get anywhere between 400 and 440V(ish) - but, if it keeps the Eurocrats happy then we'll call it 'Harmonised'

 

504bloke

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• Apr 20, 2007

• #8

Most Factories i visit in the South are around 430/440.

 

Andybr

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• Apr 20, 2007

• #9

Jim.

In the real spirit of harmonisation nothing has changed but the nameplate. When the standard was set at 400V the old margins were also changed so that 415V systems in the UK are now at the top of the acceptable range and 380V systems in continental Europe are at the lower end of the range. The standard may be 400V but nobody actually uses a 400V system. Isn't politics wonderful.

Andybr