ABB REL650 Technical Manual page 287
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- Technical manual (856 pages) ,
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1MRK 506 382-UEN A
Voltage
START
U1>
START
TRIP
Time
Integrator
t
Instantaneous
IEC09000055 V2 EN-US
Figure 137:
Voltage profile not causing a reset of the START signal for step 1, and inverse time delay at
different reset types
Line distance protection REL650 2.2 IEC
Technical manual
tIReset1
TRIP
HystAbs1
t
Frozen Timer
tIReset1
Measured
Voltage
Time
Linearly decreased
Time
IEC09000055-2-en.vsd
Section 8
Voltage protection
281
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