IEC 60255-151:2009 specifies minimum requirements for over/under current relays. It includes a specification of the protection function, measurement characteristics and time delay characteristics. Defines the influencing factors that affect the accuracy under steady state conditions and performance characteristics during dynamic conditions.
WITHDRAWN
IEC 60255-3:1989 ED2
PUBLISHED
IEC 60255-151:2009 ED1
60.60
Standard published
Aug 28, 2009