ABB Relion 670 Series Technical Reference Manual page 502
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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Section 8
Voltage protection
Voltage
PICKUP
PICKUP 1
PICKUP
TRIP
Time
Integrator
t
Instantaneous
ANSI05000011 V2 EN
Figure 250:
Voltage profile causing a reset of the pickup signal for step 1, and inverse time delay at different
reset types
496
tIReset1
PICKUP
Frozen Timer
Linearly
decreased
Definite timer delay
HystAbs1
TRIP
t
1MRK505222-UUS C
tIReset1
Measured Voltage
Time
Time
ANSI05000011-2-en.vsd
Technical reference manual
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