ABB 615 Series - Page 627

Table 521: Reset time functionality when IDMT operation time curve selected
Reset functionality Setting Type of reset
curve
Setting Type of time
reset
Setting Reset delay
time
Instantaneous
reset
Operation timer is
“Reset
instantaneously”
when drop-off
occurs
“Immediate”
Setting has no
effect
Setting has no
effect
Frozen timer Operation timer is
frozen during drop-
off
“Def time reset”
“Freeze Op timer” Operate timer is
reset after the set
Reset delay time
has elapsed
Linear decrease
Operation timer
value linearly
decreases during
the drop-off
situation
“Def time reset”
“Decrease Op
timer”
Operate timer is
reset after the set
Reset delay time
has elapsed
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 621
Technical Manual