ABB RED650, Technical Manual

Page: 259 / 926

START
ST1L1
ST1L2
ST1L3
TR1L1
TR1L2
TR1L3
ST1
TR1
START
ST2L1
ST2L2
ST2L3
TR2L1
TR2L2
TR2L3
ST2
TR2
START
TRIP
Comparator
UL1 > U1>
Comparator
UL2 > U1>
Comparator
UL3 > U1>
MaxVoltSelect
Comparator
UL1 > U2>
Comparator
UL2 > U2>
Comparator
UL3 > U2>
MaxVoltSelect
Start
t1
t1Reset
&
Trip
Output
Logic
Step 1
Start
t2
t2Reset
&
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
UL1
UL2
UL3
TRIP
TRIP
OR
OR
OR
OR
OR
OR
IEC05000013-2-en.vsd
IEC05000013-WMF V2 EN-US
Figure 118: Schematic design of Two step overvoltage protection OV2PTOV
9.2.8 Technical data
IP13013-1 v1
M13304-1 v14
Table 128: OV2PTOV technical data
Function Range or value Accuracy
Operate voltage, step 1 and 2 (1.0-200.0)% of
UBase
±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Absolute hysteresis (0.0–50.0)% of
UBase
±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Inverse time characteristics for steps 1
and 2, see table 674
- See table 674
Table continues on next page
1MRK 505 394-UEN A
Section 9
Voltage protection
Line differential protection RED650 2.2 IEC 253
Technical manual