ABB REF615 ANSI 5.0 FP1 Product Manual page 42

42 R E F 6 1 5 A N S I 5 . 0 F P 1 F E E D E R P R OT E C T I O N A N D C O N T R O L
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Table 32. Three-phase directional overcurrent protection (DPHxPDOC)
Characteristic
DPHLPDOC
Operation accuracy
DPHHPDOC
Start time
1) 2)
I = 2.0 x set Start value
Fault
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode and Pol quantity = default, current before fault = 0.0 × In, voltage before fault = 1.0 × U
from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I , Start value multiples in range of 1.5...20
n
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Table 33. Three-phase directional overcurrent protection (DPHxPDOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Directional mode
Characteristic angle
Operating curve type
1)
1) For further reference, see the Operation characteristics table
Value
Depending on the frequency of the measured current: fn ±2 Hz
±1.5% of the set value or ±0.002 x I
±1.5% of set value or ±0.002 x I
(at currents in the range of 0.1...10 x I
±5.0% of the set value
(at currents in the range of 10...40 x I
Minimum
39 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: -50dB at f = n x f
Function
DPHLPDOC
DPHHPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHLPDOC
DPHHPDOC
n
n
)
n
)
n
Typical
43 ms
3)
, where n = 2, 3, 4, 5,...
n
, f = 50 Hz, fault current in one phase with nominal frequency injected
n n
Value (range)
0.05...5.00 × I
n
0.10...40.00 × I
n
0.05...15.00
40...200000 ms
1 = Non-directional
2 = Forward
3 = Reverse
-179...180°
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
Maximum
47 ms
Step
0.01
0.01
0.01
10
-