Hope it is not too late....
Try to contact Eskom (South Africa) for some papers (www.eskom.co.za)
SCSASABB6, Distribution Standard, Part 4, Section 6
I also have a book by C.H.L. Sander, "An earthing design guide for
single-wire earth return (SWER) systems in the Northen Cape region"
This book was a tesis for his degree at the Technikon Free State, South
Some of his references:
Britten, A.C. Single-wire earth return systems in Eskom. Draft Version
1. Johannesburg: Eskom Technology Research and Investigation Group, July
Cass, J. Paper presented on SWER Earthing methods. Australian
visit: Rockhampton, 1997
Coulter, B Low cost Distribution for Rural Electrification in
Australia SWER systems. Paper presented at the World Bank Electric Power
design Workshop, Washington. Australia: Victoria, May 1993
Dowsett, A.D. Single-wire Transmission. Australia: Queensland, 29 April
Drew, N.P. Single-wire Earth Return Distribution Systems - Economical
Rural Electrification. Distribution Engineering Department. State
Electricity Commission of Victoria. Australia: Brisbane, October 1988
Eskom Transmission Engineering. Single-wire earth return. Johannesburg:
Geldenhuys, H.J. Paper presented on step and touch potentials around a
SWER Electrode and SWER Earthing in Villages. Bloemfontein: Eskom May 1997
Harvey, J.L.W. Single-wire Earth Return High Voltage Distribution for
Victorian Rural Areas. Electrical & Mechanical Engineering Transactions.
Australia, May 1959
High Voltage Earth Return Distribution for Rural Areas, Fourth Edition.
The Electricity Authority of New South Wales. Australia, June 1978
High Voltage Earth Return Distribution for Rural Areas, Third Edition. The
Electricity Authority of New South Wales. Australia, June 1968
There is 40 references. Australia, New Zealand and South-Africa seems to
be the countries with the most info regarding SWER-systems. Contact the
local suppliers of electricity in these countries.
Hope it helps