ABB RELION 620 Series Technical Manual page 667

1MRS757644 F
4.5.5.8
4.5.5.9
4.5.5.10
620 series
Technical Manual
Monitored data
Table 618: ROVPTOV Monitored data
Name Type
START_DUR FLOAT32
ROVPTOV Enum
Technical data
Table 619: ROVPTOV Technical data
Characteristic
Operation accuracy
1)2)
Start time
U
value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Residual voltage before fault = 0.0 × U
from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Technical revision history
Table 620: ROVPTOV Technical revision history
Technical revision
B
C
D
Values (Range)
0.00...100.00
1=on
2=blocked
3=test
4=test/blocked
5=off
Value
Depending on the frequency of the measured
voltage: f
±1.5% of the set value or ±0.002 × U
Minimum
Start
= 2 × set 48 ms
Fault
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f
, f = 50 Hz, residual voltage with nominal frequency injected
n n
Change
Added a setting parameter for the "Measured Uo"
or "Calculated Uo" selection
Internal improvement
Internal improvement
Section 4
Protection functions
Unit Description
% Ratio of start time /
operate time
Status
±2 Hz
n
Typical Maximum
51 ms 54 ms
, where n = 2, 3, 4, 5,...
n
n
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