Frequency Protection (Frpfrq) Main Settings; Three-Phase Voltage-Dependent Overcurrent Protection (Phpvoc) - ABB REX640 Product Manual

REX640
Product version: 1
Table 91. Frequency protection (FRPFRQ) main settings
Parameter
Operation mode
Start value Freq>
Start value Freq<
Start value df/dt
Operate Tm Freq
Operate Tm df/dt
Table 92. Three-phase voltage-dependent overcurrent protection (PHPVOC)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Measurement mode = default, current before fault = 0.0 × I
1)
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
Start value
Start value low
Voltage high limit
Voltage low limit
Start value Mult
Time multiplier
1)
Operating curve type
Operate delay time
1) For further reference, see the Operation characteristics table
58
Function
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
, f = 50 Hz, fault current in one phase with nominal frequency injected from random phase angle, results based on statistical
n n
Function
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
Value (Range)
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
0.9000...1.2000 × f
n
0.8000...1.1000 × f
n
-0.2000...0.2000 × f /s
n
80...200000 ms
120...200000 ms
Value
Depending on the frequency of the measured current and voltage:
f ±2 Hz
n
Current:
±1.5% of the set value or ± 0.002 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Typically 26 ms
Typically 40 ms
Typically 0.96
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
-50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.05...5.00 × I
n
0.05...1.00 × I
n
0.01...1.00 × U
n
0.01...1.00 × U
n
0.8...10.0
0.05...15.00
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
40...200000 ms
1MRS759144 A
Step
-
0.0001
0.0001
0.0001
10
10
n
n
Step
0.01
0.01
0.01
0.01
0.1
0.01
10
ABB