US Patent: 455,683
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| Transmission of alternating currents of different phase
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Patentee:
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| Michael von Dolivo-Dobrowolsky (exact or similar names) - Berlin, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 28, 1891 |
| Granted: |
Jul. 07, 1891 |
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Jeff Joslin
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Description: |
| This patent describes how three-phase systems can be connected in either delta or wye configurations so that three wires instead of six are required to transmit the three-phase voltages. The result is a very substantial savings in copper, which is a major expense in building electric power distribution systems, especially over longer distances. This is a key factor in the subsequent near-universal adoption of three-phase electric distribution systems. |
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