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ABB Relion 670 series - Function block

ABB Relion 670 series
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V
N
PU
_
ST1
TRST1
PU
_
ST2
TRST2
PICKUP
TRIP
Comparator
Pickup 1
Pickup
&
Trip
Output
Logic
Step 2
Time integrator
tIReset2
ResetTypeCrv2
PICKUP
Pickup
&
Trip
Output
Logic
Step 1
Time integrator
tIReset1
ResetTypeCrv1
PICKUP
TRIP
OR
OR
Comparator
VN >
Pickup2
Phase 1
TRIP
Phase 1
t1
tReset1
t2
tReset2
VN >
ANSI05000748-2-en.vsd
ANSI05000748 V2 EN
Figure 270: Schematic design of Two step residual overvoltage protection
ROV2PTOV (59N)
8.3.3 Function block
ANSI06000278-2-en.vsd
ROV2PTOV (59N)
V3P*
BLOCK
BLKTR1
BLK1
BLKTR2
BLK2
TRIP
TRST1
TRST2
PICKUP
PU_ST1
PU_ST2
ANSI06000278 V2 EN
Figure 271: ROV2PTOV (59N) function block
1MRK505222-UUS C Section 8
Voltage protection
525
Technical reference manual

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