ABB RELION 620 Series Technical Manual page 408

Section 4
Protection functions
4.2.2.13
402
Technical data
Table 424: DEFxPDEF Technical data
Characteristic
Operation accuracy
DEFLPDEF
DEFHPDEF
1)2)
Start time
DEFHPDEF
I
Fault
value
DEFLPDEF
I
Fault
value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Measurement mode = default (depends on stage), current before fault = 0.0 × I
1)
current 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) Maximum Start value = 2.5 × I
Value
Depending on the frequency of the measured
current: 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
= 2 × set Start
42 ms
58 ms
Start
= 2 × set
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
, Start value multiples in range of 1.5...20
n
1MRS757644 F
±2 Hz
n
n
n
n
n
n
Typical Maximum
46 ms 49 ms
62 ms 66 ms
, where n = 2, 3, 4, 5,...
n
, f = 50 Hz, earth-fault
n n
Technical Manual
)
n
)
3)
620 series