ABB RELION 620 Series Technical Manual page 860

Section 12
General function block features
854
t[s] Reset time (in seconds)
Time multiplier
k set
I Measured current
I> set Pickup value
Table 614: Coefficients for ANSI delayed inverse reset curves
Curve name
(1) ANSI Extremely Inverse
(2) ANSI Very Inverse
(3) ANSI Normal Inverse
(4) ANSI Moderately Inverse
(6) Long Time Extremely Inverse
(7) Long Time Very Inverse
(8) Long Time Inverse
1MAC504801-IB E
D
29.1
21.6
0.46
4.85
30
13.46
4.6
620 series ANSI
Technical Manual