Abstract
The work presented in this paper is a summary of the technical brochure being prepared by CIGRE
Working Group Bl.23 that focuses on single conductor, high voltage, ac, land cable systems,
excluding pipe type and GIL cables. It considers extruded dielectric insulation, laminar dielectric
insulation, single-point bonding or balanced cross-bonding, so that there is minimum ground return
current. Magnetic field management techniques are discussed that are currently used for
underground transmission cable systems and the shielding effectiveness of practical methods is
quantified. The cable current de-rating aspects of the various field management methods are
presented.
This paper does not cover any environmental or biological effects of EMF and does not discuss any
specific levels of EMF.
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