ABB RELION REX640 - 4.2.1.13 Technical revision history; 4.2.2 Directional earth-fault protection DEFxPDEF (ANSI 67 G;N-1 51 G;N-1, 67 G;N-1 51 G;N-2); 4.2.2.1 Identification

Characteristic Value
I
Fault
= 2 × set Start
value
I
Fault
= 10 × set Start
value
8 ms
8 ms
11 ms
9 ms
14 ms
11 ms
EFHPTOC and EFLP-
TOC
3
:
I
Fault
= 2 × set Start
value
23 ms 26 ms 29 ms
Reset time Typically <40 ms
Reset ratio Typically 0.96
Retardation time <30 ms
Operate time accuracy in definite time mode
5
±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
4
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
4.2.1.13 Technical revision history
Table 527: EFLPTOC Technical revision history
Product
connectivi
ty level
Technical
revision
Change
PCL4 I Setting Start value maximum value extended to 10.000xIn.
4.2.2 Directional earth-fault protection DEFxPDEF (ANSI
67G/N-1 51G/N-1, 67G/N-1 51G/N-2)
4.2.2.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional earth-fault protection,
low stage
DEFLPDEF Io> ->
67G/N-1
Table continues on the next page
2
Measured with static signal output (SSO).
3
Includes the delay of the signal output contact (SO).
5
Start time of the function also included.
4
Maximum
Start value = 2.5 × I
n
, Start value multiples in range of 1.5...20.
1MRS759142 F Protection functions
REX640
Technical Manual
451