ABB REF615 ANSI 5.0 FP1 Product Manual page 41

Protection functions
—
Table 30. Three-phase non-directional overcurrent protection (PHxPTOC)
Characteristic
PHLPTOC
Operation accuracy
PHHPTOC
and
PHIPTOC
PHIPTOC:
I = 2 x set Start value
Start time
1) 2)
Fault
I = 10 x set Start value
Fault
PHHPTOC and PHLPTOC:
I = 2 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) Set Operate delay time = 0,02 s, Operate curve type = IEC definite time, Measurement mode = default (dpends on stage), current before fault = 0.0 × I
one phase
with nominal frequency injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Includes the delay of the heavy-duty output contact
—
Table 31. Three-phase non-directional overcurrent protection (PHxPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
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
16 ms
11 ms
23 ms
Typically 40 ms
Typically 0.96
< 30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
RMS: No suppression
DFT: -50dB at f =
n x f , where n = 2, 3, 4, 5,...
n
Peak-to-Peak: No suppression
P-to-P+backup: No suppression
Function
PHLPTOC
PHHPTOC
PHIPTOC
PHIPTOC
PHLPTOC and PHHPTOC
PHIPTOC
PHLPTOC
PHHPTOC
PHIPTOC
n
n
)
n
)
n
Typical
19 ms
12 ms
26 ms
3)
Value (range)
0.05...5.00 × I
n
0.10...40.00 × I
n
1.00...40.00 × I
n
0.05...15.00
40...200000 ms
20...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
Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
Definite time
Maximum
23 ms
14 ms
29 ms
, f = 50 Hz, fault current in
n n
Step
0.01
0.01
0.01
0.01
10
10
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