PICKUP
PU_ST1_A
PU_ST1_B
PU_ST1_C
TRST1_A
TRST1_B
TRST1_C
PU_ST1
TRST1
PICKUP
PU_ST2_A
PU_ST2_B
PU_ST2_C
TRST2_A
TRST2_B
TRST2_C
PU_ST2
TRST2
TRIP
Comparator
VA < V1<
Comparator
VB < V1<
Comparator
VC < V1<
MinVoltSelector
Comparator
VA < V2<
Comparator
VB < V2<
Comparator
VC < V2<
MinVoltSelector
Pickup
&
Trip
Output
Logic
Step 1
Pickup
&
Trip
Output
Logic
Step 2
Phase 3
Phase 2
Phase 1
Phase 3
Phase 2
Phase 1
Time integrator
tIReset2
ResetTypeCrv2
Voltage Phase
Selector
OpMode2
1 out of 3
2 out of 3
3 out of 3
Time integrator
tIReset1
ResetTypeCrv1
Voltage Phase
Selector
OpMode1
1 out of 3
2 out of 3
3 out of 3
VA
VB
VC
TRIP
TRIP
OR
OR
OR
OR
OR
OR
PICKUP
IntBlkStVal1
t1
t1Reset
IntBlkStVal2
t2Reset
t2
ANSI05000012-3-en.vsd
ANSI05000012 V3 EN-US
Figure 95:
Schematic design of Two step undervoltage protection UV2PTUV (27)
Section 9
1MRK 511 408-UUS A
Voltage protection
284
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Summary of Contents for Relion RES670
Page 1: ...RELION 670 SERIES Phasor measurement unit RES670 Version 2 2 ANSI Technical manual ...
Page 2: ......
Page 276: ...270 ...
Page 306: ...300 ...
Page 360: ...354 ...
Page 406: ...400 ...
Page 614: ...608 ...
Page 732: ...726 ...
Page 748: ...742 ...
Page 884: ...878 ...
Page 932: ...926 ...
Page 933: ...927 ...