ABB RELION REX640, Техническое руководство, Страница: 866 / 1960

4.5.2.11 Technical data
Table 801: PHPTUV Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the voltage measured:
f
n
±2 Hz
±1.5% of the set value or ±0.002 × U
n
Start time Minimum Typical Maximum
U
Fault
= 0.85 × set
Start value 1, 2
17 ms 20 ms 23 ms
U
Fault
= 0.85 × set
Start value 1, 3
51 ms 55 ms 58 ms
Reset time Typically 40 ms
Reset ratio Depends on the set
Relative hysteresis
Retardation time <35 ms
Operate time accuracy in definite
time mode
±1.0% of the set value or ±20 ms
Operate time accuracy in inverse
time mode
±5.0% of the theoretical value or ±20 ms
4
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
4.5.2.12 Technical revision history
Table 802: PHPTUV Technical revision history
Product connectivity
level
Technical revision Change
PCL4 F New minimum value 20 ms for
Operate delay
time
and
Minimum operate time
settings
4.5.3 Residual overvoltage protection ROVPTOV (ANSI 59G/
59N)
4.5.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Residual overvoltage protection ROVPTOV Uo> 59G/59N
1 Start value = 0.97 × U
n
, voltage level before fault = 1 × U
n
, f
n
= 50 Hz, undervoltage in one phase-
to-phase voltage injected from random phase angle, results based on statistical distribution of
1000 measurements, includes the delay (≈0ms) of the static signal output (SSO) contact
2
Start time is accelerated when set
Operate delay time < 60ms. The shorter the set delay, the
shorter the start time. Here measurements done for
Operate delay time = 20ms
3
Valid when set
Operate delay time ≥ 60ms or inverse time curve selected
4
Minimum
Start value = 0.50, Start value multiples in range of 0.90...0.20
Protection functions 1MRS759142 F
866 REX640
Technical Manual