ABB Relion REC615 - Harmonics-Based Earth-Fault Protection HAEFPTOC

EFPADM Monitored data
Table 385: EFPADM Monitored data
Name Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start
time / operate
time
FAULT_DIR Enum
0=unknown
1=forward
2=backward
3=both
Detected fault
direction
COND_RES FLOAT32 -1000.00...1000.0
0
mS Real part of cal-
culated neutral
admittance
SUS_RES FLOAT32 -1000.00...1000.0
0
mS Imaginary part
of calculated
neutral admit-
tance
EFPADM Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.2.4.10 Technical data
Table 386: EFPADM Technical data
Characteristic
Value
Operation accuracy
1
At the frequency f = f
n
±1.0% or ±0.01 mS
(In range of 0.5...100 mS)
Start time
2
Minimum Typical Maximum
56 ms 60 ms 64 ms
Reset time 40 ms
Operate time accuracy ±1.0% of the set value of ±20 ms
Suppression of harmonics -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
4.2.5 Harmonics-based earth-fault protection HAEFPTOC
1
Uo = 1.0 × Un
2
Includes the delay of the signal output contact, results based on statistical distribution of 1000
measurements
1MRS758755 C Protection functions
REC615 & RER615
Technical Manual
367