ABB Relion 620 Series - Arc Protection ARCSARC; Identification; Function Block; Functionality

4.8.3.9 Technical data
Table 713: DQPTUV Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured current and
voltage:
f
n
±2 Hz
Reactive power range |PF| <0.71
Power:
±3.0 % or ±0.002 × Q
n
Voltage:
±1.5 % of the set value or ±0.002 × U
n
Start time , Typically 46 ms
Reset time <50 ms
Reset ratio Typically 0.96
Operate time accuracy ±1.0 % of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
4.9 Arc protection ARCSARC
4.9.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
C37.2 device
number
Arc protection ARCSARC ARC 50L/50NL
4.9.2 Function block
Figure 390: Function block
1
Start value = 0.05 × S
n
, reactive power before fault = 0.8 × Start value , reactive power overshoot
2 times, results based on statistical distribution of 1000 measurements
2
Includes the delay of the signal output contact
1MRS757644 H Protection functions
620 series
Technical Manual
749