Phase Discontinuity Protection (Pdnsptoc) - ABB REF615 Product Manual

ABB
Feeder Protection and Control
REF615
Product version: 2.0
Table 45. Negative phase-sequence current protection (NSPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Operating curve type
1)
1) For further reference please refer to the Operating characteristics table at the end of the Technical data chapter
Table 46. Phase discontinuity protection (PDNSPTOC)
Operation accuracy
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite
time mode
Suppression of harmonics
Table 47. Phase discontinuity protection (PDNSPTOC) main settings
Parameter
Start value
(Current ratio setting I
2
Operate delay time
Min phase current
Function
NSPTOC
NSPTOC
NSPTOC
NSPTOC
Depending on the frequency of the current
measured: fn ±2Hz
±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 fn, where n = 2, 3, 4, 5,...
Function
PDNSPTOC
/I )
1
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 (Range)
10...100 %
100...30000 ms
0.05...0.30 x In
1MRS756379 D
Step
0.01
0.05
10
Step
1
1
0.01
33