The earth fault, caused by an insulation loss between a live conductor and an exposed conductive part, represents a plant engineering problem, which may cause damage to the electrical installations and above all may jeopardise people. This ABB technical paper provides readers with the necessary information about protection against earth fault and indirect contact:
This document is divided into three main parts:
- Normative aspects (definitions, classification of the distribution systems, prescriptions regarding protection, etc.).
- ABB SACE solutions for protection against earth fault and indirect contact.
- Discrimination of the protections against earth fault.
In addition, to complete this document, there are annexes analysing thoroughly further aspects of the protection against electric shock, in particular protection against indirect contact, combined protection against both direct and indirect contact, plus considerations on the neutral and protective conductor, etc.
To see the full and extensive PDF document, which is highly detailed and very comprehensive, please click on the download button below (1.43MB file size). Alternatively, go to http://search.abb.com/library/Download.aspx?DocumentID=1SDC007102G0202&LanguageCode=en&DocumentPartId=&Action=Launch