Technical Data - ABB 615 series Technical Manual

Section 4
Protection functions
4.1.1.11
230

Technical data

Table 231: 51P, 50P, 50P-3 Technical data
Characteristic
Operation accuracy
51P
50P
and
50P-3
1)2)
Pickup time
50P-3:
I
Fault
value
I
Fault
value
50P and 51P:
I
Fault
value
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Trip time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode = default (depends 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
Pickup value = 2.5 × I
3) Maximum
Value
Depending on the frequency of the measured
current: f
±1.5% of the set value or ±0.002 × I
±1.5% of 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
Pickup
= 2 × set
16 ms
11 ms
= 10 × set Pickup
= 2 × set Pickup
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: -50 dB at f = n × f
Peak-to-Peak: No suppression
P-to-P+backup: No suppression
Pickup value multiples in range of 1.5...20
,
n
1MAC059074-MB A
±2 Hz
n
n
n
n
)
n
Typical Maximum
19 ms 23 ms
12 ms 14 ms
26 ms 29 ms
, where n = 2, 3, 4, 5,...
n
, f = 50 Hz, fault current in
n n
615 series ANSI
Technical Manual
)
3)