7.3.8 Technical data
Table 128: ROV2PTOV (59N) technical data
Function
Range or value Accuracy
Operate voltage, step 1 (1-200)% of
VBase
± 0.5% of V
n
at V < V
n
± 0.5% of V at V > V
n
Operate voltage, step 2 (1–100)% of
VBase
± 0.5% of V
n
at V < V
n
± 0.5% of V at V > V
n
Reset ratio > 98% -
Inverse time
characteristics for low and
high step, see table 578
-
See table 578
Definite time setting, step
1
(0.00–6000.00) s ± 0.5% ± 25 ms
Definite time setting, step
2
(0.000–60.000) s ± 0.5% ± 25 ms
Minimum operate time for
step 1 inverse
characteristic
(0.000-60.000) s
± 0.5% ± 25 ms
Operate time, pickup
function
30 ms typically at 0 to 2 x V
set
-
Reset time, pickup
function
40 ms typically at 2 to 0 x V
set
-
Critical impulse time 10 ms typically at 0 to 1.2 xV
set
-
Impulse margin time 15 ms typically -
7.4 Loss of voltage check LOVPTUV (27)
7.4.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Loss of voltage check LOVPTUV - 27
7.4.2 Functionality
Loss of voltage check LOVPTUV (27) is suitable for use in networks with an automatic
system restoration function. LOVPTUV (27) 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.
Section 7 1MRK 511 287-UUS A
Voltage protection
186
Technical manual
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