Technical Data - ABB REL650 Technical Manual

Section 8
Voltage protection
8.3.8
296
UN Comparator
UN > U1>
Time integrator
tIReset1
ResetTypeCrv1
Comparator
UN > U2>
Time integrator
tIReset2
ResetTypeCrv2
IEC05000748 V2 EN-US
Figure 149: Schematic design of Two step residual overvoltage protection
ROV2PTOV

Technical data

Table 160: ROV2PTOV technical data
Function
Operate voltage, step 1 - step 2
Absolute hysteresis
Inverse time characteristics for low and
high step, see table 684
Definite time delay low step (step 1) at 0
to 1.2 x U
set
Definite time delay high step (step 2) at 0
to 1.2 x U
set
Table continues on next page
Phase 1
Start
t1
START
tReset1
&
Trip
Output
TRIP
Logic
Step 1
Phase 1
Start
t2
START
tReset2
&
Trip
Output
TRIP
Logic
Step 2
Range or value
(1.0-200.0)% of
(0.0–50.0)% of
-
(0.00–6000.00) s
(0.000–60.000) s
1MRK 506 382-UEN A
OR
OR
IEC05000748_2_en.vsd
Accuracy
UBase ± 0.5% of U
U
r
± 0.5% of U at U > U
UBase
± 0.5% of U
U
r
± 0.5% of U at U > U
See table
± 0.2% or ± 45 ms
whichever is greater
± 0.2% or ± 45 ms
whichever is greater
Line distance protection REL650 2.2 IEC
Technical manual
ST1
TR1
ST2
TR2
START
TRIP
M13317-2 v14
at U ≤
r
r
at U ≤
r
r
684