Directional Earth-Fault Protection Defxpdef - ABB RELION 620 Series Technical Manual

1MRS757644 H
Technical revision
E
F
Table 399: EFHPTOC Technical revision history
Technical revision
B
C
D
E
F
Table 400: EFLPTOC Technical revision history
Technical revision
B
C
D
E
F
G
4.2.2

Directional earth-fault protection DEFxPDEF

4.2.2.1 Identification
Function description
Directional earth-fault protection,
low stage
Directional earth-fault protection,
high stage
620 series
Technical Manual
Change
Internal improvement
Internal improvement
Change
Minimum and default values changed to 40
Operate delay time setting
ms for the
Added a setting parameter for the "Meas-
ured Io" or "Calculated Io" selection
Step value changed from 0.05 to 0.01 for the
Time multiplier setting
Internal improvement
Internal improvement
Change
The minimum and default values changed to
Operate delay time setting
40 ms for the
Start value step changed to 0.005
Added a setting parameter for the "Meas-
ured Io" or "Calculated Io" selection
Step value changed from 0.05 to 0.01 for the
Time multiplier setting
Internal improvement
Internal improvement
IEC 61850 IEC 60617
identification identification
DEFLPDEF Io> ->
DEFHPDEF Io>> ->
Protection functions
ANSI/IEEE C37.2
device number
67N-1
67N-2
387