Published
In addition to the general requirements of IEC 60077-2, it gives the rules for circuit-breakers, the main contacts of which are to be connected to d.c. power and/or auxiliary circuits. The nominal voltage of these circuits does not exceed 3 000 V d.c. according to IEC 60850.
PUBLISHED
SSH IEC 60077-3:2001
60.60
Standard published
Nov 7, 2013