Voltage
Time
HystAbs1
PICKUP
TRIP
PICKUP
PICKUP 1
PICKUP
TRIP
t
tIReset1
Time
Time
Integrator
t
Frozen Timer
Linearly
decreased
Instantaneous
Measured Voltage
tIReset1
ANSI05000011-2-en.vsd
ANSI05000011 V2 EN-US
Figure 90:
Voltage profile causing a reset of the pickup signal for step 1, and inverse time delay at different
reset types
Definite timer delay
Section 9
1MRK 511 408-UUS A
Voltage protection
280
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Summary of Contents for Relion RES670
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