Voltage
Time
HystAbs1
PICKUP
TRIP
PICKUP
Pickup1
PICKUP
TRIP
t
tIReset1
Time
Time
Integrator
t
Frozen Timer
Linearly decreased
Instantaneous
Measured Voltage
tIReset1
ANSI05000020-2-en.vsd
ANSI05000020 V2 EN
Figure 96:
Voltage profile causing a reset of the PICKUP signal for step 1, and inverse time delay at different reset
types
Definite time delay
When definite time delay is selected, the function will trip 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 9
1MRK 511 365-UUS A
Voltage protection
292
Phasor measurement unit RES670 2.1 ANSI
Technical manual
Summary of Contents for Relion 670 Series RES670
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