What is a ref620?
Description The REF620 is a dedicated feeder IED perfectly aligned for the protection, control, measurement and supervision of utility sub- stations and industrial power systems. REF620 is a member of ABB’s Relion®family and a part of its 620 protection and control product series.
Why ABABB 620 series protection relays?
ABB’s 620 series protection and control relays to- gether with the COM600 Station Automation de- vice constitute a genuine IEC 61850 solution for re- liable power distribution in utility and industrial power systems.
What is a rer620 relay?
Description The RER620 is a dedicated recloser protection and control relay perfectly aligned for the protection, control, measurement and supervision of utility substations and industrial power systems includ – ing radial, looped and meshed distribution net – works with or without distributed power genera- tion.
How accurate is the pickup and reset time on the ref620?
Pickup time Typical < 55 ms Reset time < 40 ms Reset ratio Typical 1.04 Retardation time < 35 ms Trip time accuracy in definite time mode ±1.0% of the set value or ±20 ms Product guide | Feeder protection and control REF620 37 Table 66. Autoreclose (79) Characteristic Value Reclose accuracy ±1.0% of the set value or ±20 ms Table 67.