Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations The Obturator on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Three phase supply using one wire.

Status
Not open for further replies.

ruggedscot

Electrical
Feb 17, 2003
416
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
 
Replies continue below

Recommended for you

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

 
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
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor