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Old January 7th, 2014, 01:54 AM   #1
Obelixx
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Substations in large skyscrapers

Large skyscrapers have an extensive power consumption and in large buildings several substations may be required, although substations in high-rise buildings are not without problems, as transformers are very heavy and one has to choose oil-free transformers for safety reasons.
I believe, that even for large skyscrapers the highest voltage for power supply may be 30 kV, as the installation of a substation for higher voltages may occur too much space. Or do some non-industrial highrise buildings contain electrical substations for voltages above 30 kV?
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Old January 7th, 2014, 04:59 AM   #2
ThatOneGuy
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7WTC is built over a substation.
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Old January 7th, 2014, 02:51 PM   #3
Obelixx
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For which voltage level is this substation designed?
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