This dialog box includes the following areas and tabs:
Figure 1: Relay Data Dialog Box
Device No. |
Description |
Suffix |
Description |
---|---|---|---|
46 |
Phase Balance Current Relay |
P |
Phase |
49 |
Thermal Relay |
G |
Ground |
50 |
Instantaneous Overcurrent Relay |
N |
Neutral |
51 |
Time Overcurrent Relay |
Q |
Negative Sequence |
51/50 |
Time and Instantaneous Overcurrent Relay |
IAC |
IAC Curves |
67 |
AC Directional Overcurrent Relay |
IEEE |
IEEE Curves |
79 |
AC Reclosing Relay |
IEC |
IEC Curves |
87 |
Differential Protective Relay |
DT |
Definite Time Curves |
Device No. |
Description |
Suffix |
Description |
46 |
Phase Balance Current Relay |
P |
Phase |
49 |
Thermal Relay |
G |
Ground |
50 |
Instantaneous Overcurrent Relay |
N |
Neutral |
51 |
Time Overcurrent Relay |
Q |
Negative Sequence |
51/50 |
Time and Instantaneous Overcurrent Relay |
IAC |
IAC Curves |
67 |
AC Directional Overcurrent Relay |
IEEE |
IEEE Curves |
79 |
AC Reclosing Relay |
IEC |
IEC Curves |
87 |
Differential Protective Relay |
DT |
Definite Time Curves |
Figure 4: Relay Data - Settings Dialog Box
Some relays have settings and time current curves just like the low voltage breaker solid state trip devices. The common type is direct action trip (DAT) units found in some medium voltage breakers. The settings tab for these relays has a slightly different layout as described below.
Figure 5: Relay Data – Settings Dialog Box for DAT
This tab is read-only and appears only if you have imported data from an SKM Data Format file. See Importing an SKM Format File for more information.
See Comments for information.
See Hyperlinks for information.
Database Technical Reference |