Positive-Sequence Undervoltage Protection - ABB REG615 Product Manual

Generator and Interconnection Protection
REG615
Product version: 5.0 FP1
Table 48. Three-phase overvoltage protection (PHPTOV) main settings
Parameter
Start value
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
Table 49. Positive-sequence undervoltage protection (PSPTUV)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
Start value = 1.0 × U
1) , positive-sequence voltage before fault = 1.1 × U
n
on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 50. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter
Start value
Operate delay time
Voltage block value
ABB
Function
PHPTOV
PHPTOV
PHPTOV
PHPTOV
Start value
U = 0.99 × set
Fault
Start value
U = 0.9 × set
Fault
, f = 50 Hz, positive sequence undervoltage with nominal frequency injected from random phase angle, results based
n n
Function
PSPTUV
PSPTUV
PSPTUV
Value (Range)
0.05...1.60 × U
n
0.05...15.00
40...300000 ms
Definite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
Value
Depending on the frequency of the measured voltage: f
±1.5% of the set value or ±0.002 × U
Minimum Typical
52 ms 55 ms
44 ms 47 ms
Typically 40 ms
Relative hysteresis
Depends on the set
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.010...1.200 × U
n
40...120000 ms
0.01...1.00 × U
n
1MRS758279 B
Step
0.01
0.01
10
±2 Hz
n
n
Maximum
58 ms
50 ms
Step
0.001
10
0.01
41