scope:

Specifies a calculation method for - the Required Insulation Level For Working (RILL) and for the following air distances, related to the RILL; - The required minimum working distances between parts at different potential. - The required minimum working distances between the worker and parts at different potential. This prestandard is not applicable to live washing. This prestandard is applicable to all other activities of live working and working in the vicinity of live partsm provided that - the nominal system voltage lies between 1 kV and 800 kV a.c., and - lightning is not heard or seen in the work location.