ABB RED615 Technical Manual page 310

Section 4
Protection functions
4.2.3
4.2.3.1
4.2.3.2
4.2.3.3
304
Table 308: DEFLPDEF Technical revision history
Technical revision
B
C
D
Transient/intermittent earth-fault protection INTRPTEF
Identification
Function description
Transient/intermittent earth-fault
protection
Function block
A070663 V2 EN
Figure 151: Function block
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.
Change
Maximum value changed to 180 deg for the
forward angle setting.
Start value step changed to 0.005
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.
Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
IEC 61850 IEC 60617
identification identification
INTRPTEF Io> ->IEF
1YHT530004D05 D
Max
ANSI/IEEE C37.2
device number
67NIEF
615 series
Technical Manual