11Substation Earthing
This chapter explains the requirements for the design, construction, testing, and maintenance of earthing of power installations exceeding 1 kV AC in order to ensure that they are effective under all conditions and that the safety of persons is ensured in any place of the installation.
Earthing systems serve to protect people, animals, and property in the event of short‐circuits, lightning, and switching operations. They must be dimensioned in such a way that the permissible step and touch voltages and certain earthing resistances are not exceeded. The earthing of neutral star point or conductor to earth is for the purpose of controlling the voltage to earth within the required limits that must be in compliance with ...
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