Revidiran
IEC 62561-7:2011 specifies the requirements and tests for earthing enhancing compounds producing low resistance of an earth termination system.
POVUČEN
IEC 62561-7:2011 ED1
99.60
Povlačenje stupilo na snagu
25. 1. 2018.
POVUČEN
IEC 62561-7:2018 ED2