ABB RET670 Handbuch Seite 376

Abschnitt 7
Spannungsschutz
372
UL1 Comparator
UL1 < U1<
UL2 Comparator
UL2 < U1<
UL3 Comparator
UL3 < U1<
MinVoltSelect
or
Comparator
UL1 < U2<
Comparator
UL2 < U2<
Comparator
UL3 < U2<
MinVoltSelect
or
IEC05000834 V1 DE
Abb. 184: Schematisches Design der TUV-Funktion
Phase 1
Voltage Phase
Selector
OpMode1
Phase 2
1 out of 3
2 out of 3
Start
Phase 3
3 out of 3
&
Trip
Output
Logic
START
Step 1
Time integrator
t1
TRIP
tReset1
ResetTypeCrv1
Phase 1
Voltage Phase
Selector
OpMode2
Phase 2
1 out of 3
2 outof 3
Start
Phase 3
3 out of 3
&
Trip
Output
Logic
START
Step 2
Time integrator
t2
TRIP
tReset2
ResetTypeCrv2
1MRK 504 086-UDE B
ST1L1
ST1L2
ST1L3
ST1
OR
TR1L1
TR1L2
TR1L3
TR1
OR
ST2L1
ST2L2
ST2L3
ST2
OR
TR2L1
TR2L2
TR2
OR
START
OR
TRIP
OR
en05000012.vsd
Technisches Referenzhandbuch