Operating modes
Power THD
Amplitude THD
Pick-up setting for all comparators
0.10…200.00% , setting step 0.01%
Inaccuracy
±3% of set pick-up value > 0.5 x In setting. 5 mA < 0.5 x In setting
Time delay
De nite time function operating time setting for all
timers
0.00…1800.00 s, setting step 0.005 s
Inaccuracy
De nite time operating time
Instant operating time, when Im/Iset ratio > 3
Instant operating time, when Im/Iset ratio 1.05 <
Im/Iset < 3
±0.5 % or ±10 ms
Typically <20ms
Typically <25 ms
Reset
Reset time
Typically <10 ms
Reset ratio
97 %
9.2.3.6. Fault locator (21FL) X
→
km
Table. 9.2.3.6. - 310. Fault locator (21FL) technical data
Input signals
Input magnitudes
Phase current fundamental freq RMS
Pick-up
Trigger current >
0.00…40.00 x In, setting step 0.01 x In
Inaccuracy
-Triggering
±0.5 %I
SET
or ±15 mA (0.10…4.0 x I
SET
)
Reactance
Reactance per kilometer
0.000…5.000 s, setting step 0.001 ohm/km
Inaccuracy
-Reactance
±5.0 % (Typically)
Operation (Triggering)
Activation
From trip signal of any protection stage
Minimum operation time
Least 0.040 s stage operation time required
9.2.3.7. Voltage memory (integrated in 67,21G)
Table. 9.2.3.7. - 311. Voltage memory technical data
Input signals
Input magnitudes
P-P voltage fundamental frequency RMS
P-E voltage fundamental frequency RMS
Phase current fundamental freq RMS / (back-up frequency)
Pick-up
Pick-up voltage setting
Pick-up current setting (optional)
2.00…50.00 %Un, setting step 0.01 x %Un
0.01…50.00 x In, setting step 0.01 x In
Inaccuracy
Voltage
Current
±1.5 %U
SET
or ±30 mV
±0.5 %I
SET
or ±15 mA (0.10…4.0 x I
SET
)
Operation time
Angle memory activation delay
<20 ms (typically 5ms)
AQ-F255
Instruction manual
Version: 2.00
363
© Arcteq Relays Ltd
