ABB RED615 Product Manual page 19

ABB
Line Differential Protection and Control
RED615
Product version: 1.1
Three-phase non-directional overcurrent protection (PHxPTOC)
Operation Depending on the frequency of the current measured: f
accuracy
PHLPTOC
PHHPTOC
and
PHIPTOC
Start time
1) 2)
PHIPTOC:
I
Fault
I
Fault
PHHPTOC and PHLPTOC:
I
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 (depends on
stage), current before fault = 0.0 x In, fn = 50 Hz, fault current in 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
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 please refer to the Operating characteristics table at the end of the Technical data chapter
= 2 x set Start value
= 10 x set Start value
= 2 x set Start value
Function
PHLPTOC
PHHPTOC
PHIPTOC
PHLPTOC
PHHPTOC
PHLPTOC
PHHPTOC
PHIPTOC
PHLPTOC
PHHPTOC
PHIPTOC
n
±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 Typical
16 ms 19 ms
11 ms 12 ms
22 ms 24 ms
< 40 ms
Typical 0.96
< 30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20
ms
3)
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
Value (Range)
0.05...5.00 x I
n
0.10...40.00 x I
n
0.10...40.00 x I
n
0.8...10.0
0.05...15.00
40...200000 ms
40...200000 ms
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
Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
Definite time
1MRS756500 A
±2Hz
n
n
)
n
)
n
Maximum
23 ms
14 ms
25 ms
Step
0.01
0.01
0.01
0.05
0.05
10
10
10
1