ABB Relion 670 series - Page 613

Voltage
Time
HystAbs1
PICKUP
TRIP
PICKUP
PICKUP 1
PICKUP
TRIP
t
tIReset1
Time
Time
Integrator
t
Frozen Timer
Linearly
decreased
Instantaneous
Measured Voltage
ANSI05000011-3-en.vsdx
ANSI05000011 V3 EN-US
Figure 325: Voltage profile causing a reset of the pickup signal for step 1, and inverse time delay at different
reset types
Definite timer delay
When definite time delay is selected the function will trip as shown in figure 326. Detailed
information about individual stage reset/operation behavior is shown in figure
327 and figure 328
1MRK 502 066-UUS B Section 9
Voltage protection
607
Technical manual