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Time
Integrator
Voltage
Time
START
TRIP
START
U1>
START
TRIP
t
tIReset1
Time
t
Frozen Timer
Linearly
decreased
Instantaneous
Measured
Voltage
tIReset1
IEC05000020-3-en.vsd
HystAbs1
IEC05000020 V3 EN-US
Figure 76:
Voltage profile causing a reset of the START signal for step 1, and inverse time delay at
different reset types
Definite time delay
When definite time delay is selected, the function will operate as shown in figure
. Detailed information about individual stage reset/operation behavior is shown
in figure
and figure
respectively. Note that by setting
tResetn
=
0.0s
(where
n
means either 1 or 2 respectively), instantaneous reset of the definite time delayed
stage is ensured.
Section 7
1MRK 505 384-UEN A
Voltage protection
186
Breaker protection REQ650 2.2 IEC
Technical manual
Summary of Contents for impreza 2017
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