BCC: JMC - Any of these in Vanuatu?

1st reference is useful in spelling out the basic factors of concern
when designing an earth return power system.
Thee is a little more magic to it than may meet the eye.
Not something most people are liable to do very often. But ...

SWER =3D Single Wire Earth Return power transmission is essentially just
that. A single high voltage (say 10 kV to 30 kV) phase wire is used to
distribute power and the return circuit  uses ground. While this at
first and second blances may sound like very old technology (and it
is) it is also still of great use in niche applications. Medium length
rural distributions of moderate power requirement may still be most
cost effectively served by SWER.

I'm posting this mainly because of the excellent material in the first
link below.

http://www.stonepower.se/Images/SWER.pdf


Distribution of Electrical Power to Rural Areas-
Australian Experience and Implementation
Possibility in Developing Countries
http://www.iranenergy.org.ir/library/articles/5%20articles%20national%20ene=
rgy%20congress/pdf/1406.pdf


Wikipedia
http://en.wikipedia.org/wiki/Single_wire_earth_return


Sci,Eng
http://groups.google.com/group/sci.engr.electrical.sys-protection/browse_th=
read/thread/5013cb01d9526811/3539d5ffb9062da4%3Fq%3D%2522High%2BVoltage%252=
2%233539d5ffb9062da4&ei=3DiGwTS6eaOpW8Qpmqic0O&sa=3Dt&ct=3Dres&cd=3D2&sourc=
e=3Dgroups&usg=3DAFQjCNFy3KmggWtXV7X5hmiPPWIADmQw1g?pli=3D1


________________________________

This amused me, as an example test for the TECH / EE boundary is
things you cannot/can build at home and a power station is mentioned
as something that you (notionally) can't. . This is connected to a
power station and is on the large side of DIY but the expressions
given may indeed assist some DIY endeavours.




             Russell McMahon

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.