Table 308: DEFLPDEF Technical revision history
Technical revision Change
B Maximum value changed to 180 deg for the
Max
forward angle
setting.
Start value
step changed to 0.005
C Added a setting parameter for the "Measured Io"
or "Calculated Io" selection and setting
parameter for the "Measured Uo", "Calculated
Uo" or "Neg. seq. volt." selection for polarization.
The sector default setting values are changed
from 88 degrees to 80 degrees.
D Step value changed from 0.05 to 0.01 for the
Time multiplier
setting.
4.2.3 Transient/intermittent earth-fault protection INTRPTEF
4.2.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Transient/intermittent earth-fault
protection
INTRPTEF Io> ->IEF 67NIEF
4.2.3.2 Function block
A070663 V2 EN
Figure 151: Function block
4.2.3.3 Functionality
The transient/intermittent measuring earth-fault protection INTRPTEF is a function
designed for the protection and clearance of permanent and intermittent earth faults
in distribution and sub-transmission networks. Fault detection is done from the
residual current and residual voltage signals by monitoring the transients.
The operating time characteristics are according to definite time (DT).
The function contains a blocking functionality. It is possible to block function
outputs, timers or the function itself, if desired.
Section 4 1YHT530004D05 D
Protection functions
304 615 series
Technical Manual
To Next Page
Loading...
