ABB Relion 670 series - Page 626

ANSI05000019-3-en.vsd
Voltage
Time
HystAbs1
PICKUP
TRIP
PU_Overvolt1
PICKUP
TRIP
t
tIReset1
Time
Time
Integrator
t
Frozen Timer
Linearly
decreased
Instantaneous
Measured
Voltage
tIReset1
ANSI05000019 V3 EN-US
Figure 333: Voltage profile not causing a reset of the PICKUP signal for step 1, and inverse time delay at
different reset types
Section 9 1MRK 502 066-UUS B
Voltage protection
620
Technical manual