Section 8
Voltage protection
Voltage
Pickup1
PICKUP
TRIP
Time
Integrator
t
Instantaneous
ANSI05000020 V2 EN
Figure 259:
Voltage profile causing a reset of the PICKUP signal for step 1, and inverse time delay
510
tIReset1
PICKUP
PICKUP
Frozen Timer
Linearly decreased
Definite time delay
When definite time delay is selected the function will operate as shown in figure 260.
Detailed information about individual stage reset/operation behavior is shown in figure
252
and figure
253
receptively. Note that by setting tResetn = 0.0s instantaneous reset
of the definite time delayed stage is ensured
TRIP
HystAbs1
t
ANSI05000020-2-en.vsd
1MRK505222-UUS C
tIReset1
Measured Voltage
Time
Time
Technical reference manual