"Dr.-Ing. HARTMUT KIANK, born in 1952, is a principal expert for Power Distribution Solutions of the Siemens Energy Sector. In this professional management position, he deals with planning and project management of public and industrial power supply systems. He is a member of the VDE and author of numerous technical articles and reports (CIRED, ICEE). His ""etz"" essay ""EMC and personal safety in multiply-fed industrial networks"" was integrated the ""VDE annual report 2007 of electrical engineering"". Dipl.-Ing. WOLFGANG FRUTH, born in 1966, is a project planning engineer and consultant support for Totally Integrated Power of the Siemens Industry Sector. He is co-developer of the network calculation and design software ""SIMARIS design"" and author of various technical publications. ((kurz)) HARTMUT KIANK is a principal expert for Power Distribution Solutions of the Siemens Energy Sector. WOLFGANG FRUTH is a project planning engineer and consultant support for Totally Integrated Power of the Siemens Industry Sector."