Table 31. Three-phase voltage-dependent overcurrent protection (PHPVOC)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current and voltage:
f
n
±2 Hz
Current:
±1.5% of the set value or ± 0.002 × I
n
Voltage:
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
Typically 26 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode ±5.0% of the set value or ±20 ms
Suppression of harmonics -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1)
Measurement mode
= default, current before fault = 0.0 × I
n
, f
n
= 50 Hz, fault current in one phase with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 32. Three-phase voltage-dependent overcurrent protection (PHPVOC) main settings
Parameter
Function Value (Range) Step
Start value PHPVOC 0.05...5.00 × I
n
0.01
Start value low PHPVOC 0.05...1.00 × I
n
0.01
Voltage high limit PHPVOC 0.01...1.00 × U
n
0.01
Voltage low limit PHPVOC 0.01...1.00 × U
n
0.01
Start value Mult PHPVOC 0.8...10.0 0.1
Time multiplier PHPVOC 0.05...15.00 0.01
Operating curve type
1)
PHPVOC Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
Operate delay time PHPVOC 40...200000 ms 10
1) For further reference, see the Operation characteristics table
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