ABB REM615 ANSI 5.0 FP1 Product Manual page 33

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Table 40. Negative-sequence overvoltage protection (NSPTOV)
Characteristic
Operation accuracy
Start time
(1), (2)
U = 1.1 x set Start value
Fault
U = 2.0 x set Start value
Fault
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1 Negative-sequence voltage before fault = 0.0 × U
distribution of 1000 measurements
2 Includes the delay of the signal output contact
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Table 41. Negative-sequence overvoltage protection (NSPTOV) main settings
Parameter
Start value
Operate delay time
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Table 42. Frequency protection (FRPFRQ)
Characteristic
f>/f<
Operation accuracy
df/dt
f>/f<
Start time 1) 2)
df/dt
Reset time
Operate time accuracy
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Table 43. 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
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 × U
Minimum
33 ms
24 ms
Typically 40 ms
Typically 0.96
< 35 ms
±1.0% of the set value or ±20 ms
DFT: -50dB at f = n x f
, f = 50 Hz, negative-sequence overvoltage with nominal frequency injected from random phase angle, results based on statistical
n n
Function
NSPTOV
NSPTOV
Value
±5 mHz
±50 mHz/s (in range |df/dt| <5 Hz/s)
±2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)
<80 ms
<120 ms
<150 ms
±1.0% of the set value or ±30 ms
Function
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
FRPFRQ
n
Typical
35 ms
26 ms
, where n = 2, 3, 4, 5,...
n
Value (range)
0.010...1.000 × U
n
40...120000 ms
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
n
Maximum
37 ms
28 ms
Step
0.001
1
Step
-
0.0001
0.0001
0.005
10
10
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