until the set
Reset delay time
value is exceeded. If the drop-off situation exceeds the set
Reset delay time
, the Timer is reset and the
PICKUP
output is deactivated.
When the IDMT trip time curve is selected, the functionality of the Timer in the drop-off
state depends on the combination of the
Type of reset curve
and
Reset delay time
settings.
Table 179:
The reset time functionality when the IDMT trip time curve is selected
Type of reset curve
Description of operation
“Immediate”
The trip timer is reset instantaneously when drop-off
occurs
“Def time reset”
The trip timer is frozen during drop-off. The trip timer
is reset after the set
Reset delay time is exceeded
“DT Lin decr rst”
The trip timer value linearly decreases during the
drop-off situation. The trip timer is reset after the set
Reset delay time is exceeded
Section 4
1MRS240050-IB C
Protection functions
232
REF615R
Technical Manual
Summary of Contents for RELION REF615R
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