Table 91. Frequency protection (FRPFRQ) main settings
Parameter Function Value (Range) Step
Operation mode FRPFRQ 1 = Freq<
2 = Freq>
3 = df/dt
4 = Freq< + df/dt
5 = Freq> + df/dt
6 = Freq< OR df/dt
7 = Freq> OR df/dt
-
Start value Freq> FRPFRQ 0.9000...1.2000 × f
n
0.0001
Start value Freq< FRPFRQ 0.8000...1.1000 × f
n
0.0001
Start value df/dt FRPFRQ -0.2000...0.2000 × f
n
/s 0.0001
Operate Tm Freq FRPFRQ 80...200000 ms 10
Operate Tm df/dt FRPFRQ 120...200000 ms 10
Table 92. 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 93. 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
1MRS759144 A
To Next Page
Loading...
Need help?
General
