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Three phase supply using one wire.

Three phase supply using one wire.

Three phase supply using one wire.

(OP)
Going through this I found that there is a system out there that uses one wire and gives a three phase service. Been used in rural areas and the like. It involves SWER network to provide the primary feeder - feeding into a substation. This then produces a single phase line voltage of around 480v via a stepdown transformer. This single phase is then converted to produce three phase power through an invertor or a motorgen set.

Rugged

RE: Three phase supply using one wire.

So, in reality, you don't have three-phase supply from one wire, you have three-phase from an inverter or motor-gen set which is supplied by a single-phase source.

RE: Three phase supply using one wire.

Single-phase to three-phase converters are readily available. They are common in rural applications for remote farms, well pumps and the like.

RE: Three phase supply using one wire.

Yes, DanDel is right. Your "single wire supply" is just a source of raw material for your new power source, the inverter or MG set. Technically that is a new service.

"Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more."   
Nikola Tesla

RE: Three phase supply using one wire.

An HVDC link is just such a thing. Sometimes a return wire is used, but the original ones (Ygne, Gotland and English Channel) used just one wire And water for the return path.

Gunnar Englund
www.gke.org

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