A070420-ANSI V1 EN
Figure 546:
Drop-off period is shorter than the set Reset delay time
When the drop-off period is shorter than the set
Reset delay time
, the input signal for the definite timer (here: timer input) is active, provided that the
current is above the set
Pickup value
. The input signal is inactive when the current is below
the set
Pickup value
and the set hysteresis region. The timer input rises when a fault current
is detected. The definite timer activates the
PICKUP
output and the operation timer starts
elapsing. The reset (drop-off) timer starts when the timer input falls, that is, the fault
disappears. Another fault situation occurs before the reset (drop-off) timer has elapsed.
This causes the activation of the
TRIP
output, since the operation timer already has
elapsed.
Section 11
1MAC059074-MB A
General function block features
1076
615 series ANSI
Technical Manual
Summary of Contents for Relion 615 series
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