Ревидиран
Gives rules for AC circuit-breakers, the main contacts of which are to be connected to AC overhead contact lines; the nominal voltage of these circuits is in accordance with IEC 60850. Complements the general requirements given in IEC 60077-2.
ПОВУЧЕН
IEC 60077-4:2003 ED1
99.60
Повлачење ступило на снагу
25. 10. 2019.
ОБЈАВЉЕН
IEC 60077-4:2019 ED2