ABB REV615 User Manual

Table 31. Directional earth-fault protection (DEFxPDEF)
Characteristic Value
Operation accuracy Depending on the frequency of the measured current: f
n
±2 Hz
DEFLPDEF
Current:
±1.5% of the set value or ±0.002 × I
n
Voltage
±1.5% of the set value or ±0.002 × U
n
Phase angle:
±2°
DEFHPDEF Current:
±1.5% of the set value or ±0.002 × I
n
(at currents in the range of 0.1…10 × I
n
)
±5.0% of the set value
(at currents in the range of 10…40 × I
n
)
Voltage:
±1.5% of the set value or ±0.002 × U
n
Phase angle:
±2°
Start time
1)2)
Minimum Typical Maximum
DEFHPDEF
I
Fault
= 2 × set Start value
42 ms 46 ms 49 ms
DEFLPDEF
I
Fault
= 2 × set Start value
58 ms 62 ms 66 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Retardation time <30 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics RMS: No suppression
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
1) Set Operate delay time = 0.06 s, Operate curve type = IEC definite time, Measurement mode = default (depends on stage), current before fault = 0.0 × I
n
, f
n
= 50 Hz, earth-fault 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
n
, Start value multiples in range of 1.5...20
Capacitor Bank Protection and Control
1MRS757952 D
REV615
Product version: 5.0 FP1
ABB 29

ABB REV615 Specifications

General

Brand	ABB
Model	REV615
Category	Power distribution unit
Language	English