ABB Relion 670 Series Technical Reference Manual page 527
Line differential protection ansi
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Applications manual (944 pages) ,
- Technical reference manual (752 pages)
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1MRK505222-UUS C
ANSI05000019 V3 EN
Figure 265:
Voltage profile not causing a reset of the PICKUP signal for step 1, and inverse time delay
Technical reference manual
Voltage
PICKUP
PU_Overvolt1
PICKUP
TRIP
Time
Integrator
t
Instantaneous
tIReset1
TRIP
HystAbs1
t
Frozen Timer
Section 8
Voltage protection
tIReset1
Measured
Voltage
Time
Linearly
decreased
Time
ANSI05000019-3-en.vsd
521
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