ABB Relion 670 Series Technical Reference Manual page 222
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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Section 7
1MRK 505 208-UEN B
Voltage protection
tReset1
tReset1
Voltage
Measured
START
Voltage
Hysteresis
TRIP
U1<
Time
START
t1
TRIP
Time
Integrator
Frozen Timer
t1
Time
Instantaneous
Linear Decrease
Reset
IEC05000010-3-en.vsd
IEC05000010 V3 EN
Figure 104:
Voltage profile not causing a reset of the start signal for step 1, and inverse time delay
216
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