You can access the standard IEC 61936-1:2021 through the IEC website or other authorized distributors.
Key terms were updated to eliminate ambiguity between international grid operators and industrial end-users. iec 6193612021 link
A robust earthing system is critical to safely dissipate fault currents into the ground. The standard aligns with and IEEE 80 principles to manage: You can access the standard IEC 61936-1:2021 through