Technical Data; Loss Of Voltage Check Lovptuv; Identification; Functionality - ABB REC650 Technical Manual

1MRK 511 287-UEN A
7.3.8
7.4
7.4.1
7.4.2
Technical manual

Technical data

Table 128: ROV2PTOV technical data
Function Range or value
Operate voltage, (1-200)% of
step 1
Operate voltage, (1–100)% of
step 2
Reset ratio > 98%
Inverse time -
characteristics for
low and high step,
see table 578
Definite time setting, (0.00–6000.00) s
step 1
Definite time setting, (0.000–60.000) s
step 2
Minimum operate (0.000-60.000) s
time for step 1
inverse characteristic
Operate time, start 30 ms typically at 0 to 2 x U
function
Reset time, start 40 ms typically at 2 to 0 x U
function
Critical impulse time 10 ms typically at 0 to 1.2 xU
Impulse margin time 15 ms typically

Loss of voltage check LOVPTUV

Identification

Function description
Loss of voltage check

Functionality

Loss of voltage check LOVPTUV is suitable for use in networks with an automatic
system restoration function. LOVPTUV issues a three-pole trip command to the
circuit breaker, if all three phase voltages fall below the set value for a time longer than
the set time and the circuit breaker remains closed.
The operation of LOVPTUV is supervised by the fuse failure supervision SDDRFUF.
UBase
UBase
set
set
set
IEC 61850 IEC 60617
identification identification
LOVPTUV -
Section 7
Voltage protection
Accuracy
± 0.5% of U at U < U
r r
± 0.5% of U at U > U
r
± 0.5% of U at U < U
r r
± 0.5% of U at U > U
r
-
See table 578
± 0.5% ± 25 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
-
-
-
-
ANSI/IEEE C37.2
device number
27
175