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WITHDRAWN
SSH EN 60255-3:1998
PUBLISHED
SSH EN 60255-151:2009
60.60
Standard published
Jan 1, 2009