ABB RELION 620 Series Technical Manual page 402

Section 4
Protection functions
396
80 160 320 480 640
GUID-44A67C51-E35D-4335-BDBD-5CD0D3F41EF1 V1 EN
Figure 181: Trip curves at prior load 1 x FLC and p=100 %, Overload factor = 1.05.
Tau [s]
3840
1920
960
1MAC504801-IB E
620 series ANSI
Technical Manual