ABB RED615 Product Manual page 37

ABB
Line Differential Protection and Control
RED615
Product version: 2.0
Table 36. Negative phase-sequence overcurrent protection (NSPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Operating curve
1)
type
1) For further reference please refer to the Operating characteristics table at the end of the Technical data chapter
Table 37. Phase discontinuity protection (PDNSPTOC)
Characteristic
Operation accuracy
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
Table 38. Phase discontinuity protection (PDNSPTOC) main settings
Parameter
Start value (Current
ratio setting I /I )
2 1
Operate delay time
Min phase current
Function
NSPTOC
NSPTOC
NSPTOC
NSPTOC
Function
PDNSPTOC
PDNSPTOC
PDNSPTOC
Value (Range)
0.01...5.00 x I
n
0.05...15.00
40...200000 ms
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
13, 14, 15, 17, 18, 19
Value
Depending on the frequency of the current
measured: f ±2Hz
n
±2% of the set value
< 70 ms
< 40 ms
Typical 0.96
< 35 ms
±1.0% of the set value or ±20 ms
DFT: -50dB at f = n x f
n
...
Value (Range)
10...100 %
100...30000 ms
0.05...0.30 x I
n
1MRS756500 B
Issued: 03.07.2009
Step
0.01
0.05
10
, where n = 2, 3, 4, 5,
Step
1
1
0.01
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