8.2.8 Technical data
Table 76: OV2PTOV (59) technical data
Function Range or value Accuracy
Operate voltage, low and
high step
(1-200)% of
VBase
± 0.5% of V
n
at V < V
n
± 0.5% of V at V > V
n
Reset ratio >95% -
Inverse time
characteristics for low
and high step, see
table
407
- See table 407
Definite time delay, step 1 (0.00 - 6000.00) s ± 0.5% ± 25 ms
Definite time delays, step
2
(0.000-60.000) s ± 0.5% ± 25 ms
Minimum operate time,
Inverse characteristics
(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 2 x V
set
-
Impulse margin time 15 ms typically -
8.3 Two step residual overvoltage protection ROV2PTOV
(59N)
8.3.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Two step residual overvoltage
protection
ROV2PTOV
IEC10000168 V1 EN
59N
8.3.2 Functionality
Residual voltages may occur in the power system during ground faults.
1MRK 505 277-UUS C Section 8
Voltage protection
137
Technical Manual
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