Directional Earth-Fault Protection Defxpdef (Ansi 67G/N-1 51G/N-1, 67G/N-1 51G/N-2) - ABB RELION REX640 Technical Manual

1MRS759142 F
Characteristic
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
5
Operate time accuracy in inverse time mode
Suppression of harmonics
4.2.1.13 Technical revision history
Table 527: EFLPTOC Technical revision history
Product
connectivi
ty level
PCL4
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
Directional earth-fault protection,
low stage
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 Start value = 2.5 × I
Maximum
REX640
Technical Manual
I = 2 × set
Fault
value
I = 10 × set
Fault
value
EFHPTOC and EFLP-
3
TOC :
I = 2 × set
Fault
value
Technical Change
revision
Start value maximum value extended to 10.000xIn.
I Setting
Start value multiples in range of 1.5...20.
,
n
Value
Start 8 ms
8 ms
Start
23 ms
Start
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
IEC 61850 IEC 60617
identification identification
DEFLPDEF Io> ->
Protection functions
11 ms 14 ms
9 ms 11 ms
26 ms 29 ms
, where n = 2, 3, 4, 5,...
n
ANSI/IEEE C37.2
device number
67G/N-1
4
451