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

REX640
Product version: 1
Table 52. Three-phase non-directional overcurrent protection (PHxPTOC)
Characteristic
Operation accuracy
Start time 1)
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Operate curve type = IEC definite time, Measurement mode = default (depends on stage), current before fault = 0.0 × In, fn = 50 Hz, fault current in one phase with nominal frequency
1) Set
injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Measured with static signal output (SSO)
3) Includes the delay of the signal output contact (SO)
Table 53. Three-phase non-directional overcurrent protection (PHxPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
44
PHLPTOC
PHHPTOC
and
PHIPTOC
2)
PHIPTOC :
Start value
I = 2 × set
Fault
Start value
I = 10 × set
Fault
PHHPTOC and PHLPTOC 3) :
Start value
I = 2 × set
Fault
Function
PHLPTOC
PHHPTOC and PHIPTOC
PHLPTOC and PHHPTOC
PHLPTOC and PHHPTOC
PHIPTOC
PHLPTOC
PHHPTOC
PHIPTOC
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 × I
±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
Minimum Typical
8 ms 12 ms
7 ms 9 ms
23 ms 26 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: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Peak-to-Peak: No suppression
P-to-P+backup: No suppression
Value (Range)
0.05...5.00 × I
n
0.10...40.00 × I
n
0.025...15.000
40...300000 ms
20...300000 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, 20
Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
Definite time
1MRS759144 A
±2 Hz
n
n
n
)
n
)
n
Maximum
15 ms
12 ms
29 ms
Step
0.01
0.01
0.005
10
10
ABB