Technical Data - ABB REG650 Technical Manual

Section 8
Voltage protection
8.1.8
222
UL1 or UL12
Comparator
U < U1<
UL2 or UL23
Comparator
U < U1<
UL3 or Ul31
Comparator
U < U1<
MinVoltSelect
Comparator
U < U2<
Comparator
U < U2<
Comparator
U < U2<
IEC08000016 V2 EN
Figure 115: Schematic design of Two step undervoltage protection UV2PTUV

Technical data

Table 131: UV2PTUV technical data
Function Range or value
Operate voltage, low (1–100)% of
and high step
Reset ratio <105%
Inverse time -
characteristics for
low and high step,
see table 485
Table continues on next page
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
Step1
Time integrator
TRIP
t1
Phase 1
Voltage Phase
Selector
OpMode2
Phase 2
1 out of 3
2 out of 3
Start
Phase 3
3 out of 3
&
Trip
Output
Logic
START
Step2
Timer
TRIP
t2
UBase
1MRK 502 034-UEN -
ST1L1
ST1L2
ST1L3
OR
OR
OR
OR
START
OR
OR
IEC08000016-2-en.vsd
Accuracy
± 0.5% of U
r
-
See table 485
Technical Manual
TRIP