ABB Relion 620 Series - Page 1152

Figure 617: ANSI long-time inverse reset time characteristics
The delayed inverse-time reset is not available for IEC-type inverse time
curves.
User-programmable delayed inverse reset
The user can define the delayed inverse reset time characteristics with the following
formula using the set Curve parameter D .
General function block features
1MRS757644 H
1152 620 series
Technical Manual