56 REF615 ANSI 5.0 FP1 FEEDER PROTECTION AND CONTROL
Interconnection functions
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Table 86. Directional reactive power undervoltage protection (DQPTUV )
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current and voltage:
f
n
Power:
n
Voltage:
n
Start time
Reset time
Reset ratio
Suppression of harmonics
n
n
2) Includes the delay of the signal output contact
—
Table 87. Directional reactive power undervoltage protection (DQPTUV) main settings
Parameter Function Value (range) Step
Voltage start value DQPTUV
n
Operate delay time DQPTUV
Min reactive power DQPTUV
n
Min Ps Seq current DQPTUV
n
Pwr sector reduction DQPTUV
—
Table 88. Low-voltage ride-through protection (LVRTPTUV)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured voltage:
f
n
n
Start time
Reset time Based on maximum value of Recovery time setting
Operate time accuracy
Suppression of harmonics
n
1) Tested for Number of Start phases = 1 out of 3, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
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