Table 72. Third harmonic-based stator earth-fault protection (H3EFPSEF) main settings
Parameter Function Value (Range) Step
Beta H3EFPSEF 0.50...10.00 0.01
Voltage N 3.H Lim H3EFPSEF 0.005...0.200 × U
n
0.001
Operate delay time H3EFPSEF 20...300000 ms 10
Voltage selection H3EFPSEF 1 = No voltage
2 = Measured Uo
3 = Calculated Uo
4 = Phase A
5 = Phase B
6 = Phase C
-
CB open factor H3EFPSEF 1.00...10.00 0.01
Table 73. Underpower protection (DUPPDPR)
Characteristic
Value
Operation accuracy
1)
Depending on the frequency of the measured current and voltage:
f
n
±2 Hz
Power measurement accuracy ±3% of the set value or ±0.002 × S
n
Phase angle: ±2°
Start time
2)3)
Typically 45 ms
Reset time Typically 30 ms
Reset ratio Typically 1.04
Operate time accuracy ±1.0% of the set value of ±20 ms
Suppression of harmonics -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1)
Measurement mode
= “Pos Seq” (default)
2) U = U
n
, f
n
= 50 Hz, results based on statistical distribution of 1000 measurements
3) Includes the delay of the signal output contact
Table 74. Underpower protection (DUPPDPR) main settings
Parameter
Function Value (Range) Step
Start value DUPPDPR 0.01...2.00 × S
n
0.01
Operate delay time DUPPDPR 40...300000 ms 10
Pol reversal DUPPDPR 0 = False
1 = True
-
Disable time DUPPDPR 0...60000 ms 1000
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