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
Generator and Interconnection Protection
1MRS758279 B
REG615
Product version: 5.0 FP1
34
ABB