ABB Relion 670 Series Technical Reference Manual page 501
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
ANSI05000010 V3 EN
Figure 249:
Voltage profile not causing a reset of the pickup signal for step 1, and inverse time delay at different
reset types
Technical reference manual
Voltage
PICKUP
HystAbs1
PICKUP1
PICKUP
TRIP
Time
Integrator
t
Instantaneous
tIReset1
TRIP
t
Frozen Timer
Linearly
decreased
Section 8
Voltage protection
tIReset1
Measured
Voltage
Time
Time
ANSI05000010-3-en.vsd
495
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