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Home > Archive > Electrical Engineering > April 2006 > Siemens Load Center
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Siemens Load Center
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| Kissi Asiedu 2006-04-23, 4:21 am |
| I would like to know if a Siemens Load Center in the USA rated at
120/240Volts work in Africa, where the voltage is 240 volts to ground at
50Hz.
Thanks.
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| John McLean 2006-04-23, 7:21 am |
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"Kissi Asiedu" <kissi5559@aol.com> wrote in message
news:AvF2g.135438$Lk3.95841@fe67.usenetserver.com...
> I would like to know if a Siemens Load Center in the USA rated at
> 120/240Volts work in Africa, where the voltage is 240 volts to ground at
> 50Hz.
> Thanks.
>
>
>
If you are asking this basic question, you've got problems. This is probably
a 3 phase load centre, the insulation should be ok for 415/240 volts,
likewise the frequency per se. However, the control supply may be taken from
the busbars, in which case the voltage on these will be approximately
doubled; which is not acceptable, if it is a separate control voltage from
an external source, then it is probably acceptable for the difference in
frequency. Seimens can give you a more definitive answer.
Have you considered the requirements for the IP classification wrt
temperature, humidity and elevation etc.
Jaymack
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| Kissi Asiedu 2006-04-23, 11:21 am |
| You are right, it is a 3 phase load center. However I am not familiar with
the control supply etc, but I know the voltage coming from the utility pole
is 240 volts per leg. What do you mean by seperate control voltage and IP
classification wrt?
Thanks
"John McLean" <jaymack12@btopenworld.com> wrote in message
news:btqdnSDfBNFV09bZRVnysw@bt.com...
>
> "Kissi Asiedu" <kissi5559@aol.com> wrote in message
> news:AvF2g.135438$Lk3.95841@fe67.usenetserver.com...
>
> If you are asking this basic question, you've got problems. This is
> probably
> a 3 phase load centre, the insulation should be ok for 415/240 volts,
> likewise the frequency per se. However, the control supply may be taken
> from
> the busbars, in which case the voltage on these will be approximately
> doubled; which is not acceptable, if it is a separate control voltage from
> an external source, then it is probably acceptable for the difference in
> frequency. Seimens can give you a more definitive answer.
> Have you considered the requirements for the IP classification wrt
> temperature, humidity and elevation etc.
> Jaymack
>
>
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"Kissi Asiedu" <kissi5559@aol.com> wrote in message
news:AvF2g.135438$Lk3.95841@fe67.usenetserver.com...
> I would like to know if a Siemens Load Center in the USA rated at
> 120/240Volts work in Africa, where the voltage is 240 volts to ground at
> 50Hz.
> Thanks.
>
READ the specs from the manufacture. Most manufactures that make equipment
for the US keep the ratings below 300V for residential stuff. Ratings are
typically phase to phase. NOT phase to ground.
You probably need a 600 V rated panel board.
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