ABB RELION 620 Series Technical Manual page 663

1MRS757644 F
4.5.4.10
4.5.5
4.5.5.1
4.5.5.2
4.5.5.3
620 series
Technical Manual
Technical data
Table 612: PHAPTUV Technical data
Characteristic
Operation accuracy
1)2)
Start time
U
value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Start value = 1.0 × U
1) , voltage before fault = 1.1 × U
n
with nominal frequency injected from random phase angle, results based on statistical distribution of
1000 measurements
2) Includes the delay of the signal output contact
Start value = 0.50 × U
3) Maximum
Residual overvoltage protection ROVPTOV
Identification
Function description
Residual overvoltage protection
Function block
A070766 V3 EN
Figure 333: Function block
Functionality
The residual overvoltage protection function ROVPTOV is used in distribution
networks where the residual overvoltage can reach non-acceptable levels in, for
example, high impedance earthing.
Value
Depending on the frequency of the measured
voltage: f
±1.5% of the set value or ±0.002 × U
Minimum
Start
= 0.9 × set
64 ms
Fault
Typically 40 ms
Depends on the set
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
, f
n n
Start value multiples in range of 0.90...0.20
,
n
IEC 61850
identification
ROVPTOV
Section 4
Protection functions
±2 Hz
n
Typical
68 ms
Relative hysteresis
, where n = 2, 3, 4, 5,...
n
= 50 Hz, undervoltage in one phase-to-phase
IEC 60617 ANSI/IEEE C37.2
identification device number
Uo> 59G
n
Maximum
71 ms
3)
657