Three-Phase Directional Overcurrent Protection (Dphxpdoc) - ABB REX640 Product Manual

REX640
Product version: 1
Table 54. Three-phase directional overcurrent protection (DPHxPDOC)
Characteristic
Operation accuracy
1)2)
Start time
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 × I
random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Start value = 2.5 × I
3) Maximum ,
n
Table 55. Three-phase directional overcurrent protection (DPHxPDOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Directional mode
Characteristic angle
1)
Operating curve type
1) For further reference, see the Operating characteristics table
ABB
DPHLPDOC
DPHHPDOC
Start value
I = 2.0 × set
Fault
Start value multiples in range of 1.5...20
Function
DPHLPDOC
DPHHPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHxPDOC
DPHLPDOC
DPHHPDOC
Value
Depending on the frequency of the current/voltage measured: f
Current:
±1.5% of the set value or ±0.002 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Phase angle: ±2°
Current:
±1.5% of the set value or ±0.002 × I
(at currents in the range of 0.1...10 × I
±5.0% of the set value
(at currents in the range of 10...40 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Phase angle: ±2°
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: -50 dB at f = n × f
, voltage before fault = 1.0 × U , f = 50 Hz, fault current in one phase with nominal frequency injected from
n n n
Value (Range)
0.05...5.00 × I
n
0.10...40.00 × I
n
0.025...15.000
40...300000 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
1MRS759144 A
n
n
n
)
n
)
n
n
Typical Maximum
43 ms 47 ms
3)
, where n = 2, 3, 4, 5,...
n
Step
0.01
0.01
0.005
10
-
1
±2 Hz
n
45