ABB ABILITY SSC600 Product Manual page 15

Product Guide
SSC600
Product version: 1.0
Table 24. Transient/intermittent earth-fault protection (INTRPTEF)
Characteristic
Operation accuracy (Uo criteria with transient protection)
Operate time accuracy
Suppression of harmonics
Table 25. Transient/intermittent earth-fault protection (INTRPTEF) main settings
Parameter
Directional mode
Operate delay time
Voltage start value
Operation mode
Peak counter limit
Min operate current
Table 26. Negative-sequence overcurrent protection (NSPTOC)
Characteristic
Operation accuracy
Start time IFault = 2 × set Start value
22, 23
IFault = 10 × set Start value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Table 27. Negative-sequence overcurrent protection (NSPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Operating curve type
25
Table 28. 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
22 Negative sequence current before fault = 0.0, fn = 50 Hz, results based on statistical distribution of 1000 measurements
23 Includes the delay of the signal output contact
24 Maximum Start value = 2.5 × In, Start value multiples in range of 1.5...20
25 For further reference, see the Operation characteristics table
ABB
Function
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
Value
Depending on the frequency of the measured current: fn
±1.5% of the set value or ±0.002 × In
Minimum
24 ms
15 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,...
Function
NSPTOC
NSPTOC
NSPTOC
NSPTOC
Value
Depending on the frequency of the measured current: fn ±2 Hz
±1.5% of the set value or ±0.002 × Uo
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5
Value (Range)
1 = Non-directional
2 = Forward
3 = Reverse
40...1200000 ms
0.05...0.50 × Un
1 = Intermittent EF
2 = Transient EF
2...20
0.01...1.00 × In
Typical
27 ms
18 ms
24
Value (Range)
0.01...5.00 × In
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 measured current: fn ±2 Hz
<70 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,...
1MRS758725
Step
-
10
0.01
-
1
0.01
Maximum
29 ms
20 ms
Step
0.01
0.01
10
15