Siemens 7SA511 manual Target Log Messages, LCD Text 2nd line Description, Distance Protection

7SA511 Line Protection RelayChapter 6

6.3.3 Target Log Messages

Table 6-3 lists all of the available fault messages. These messages fall into the following categories:

General faults

Distance protection faults

Emergency overcurrent protection faults

Fault location messages

￿High-resistance ground fault protection faults

Internal automatic reclose issue of the reclose command

Only messages consistent with your relay configuration and options will appear in the display. See Chapter 8, “Maintenance,” for information on how to erase the target log records.

Table 6-3.Possible Target Log Messages

LCD Text (2nd line)	Description
General
System Flt nn	System fault with consecutive number nn
Fault	Beginning of the fault
IL1/In=nnn.nn	Interrupted fault current ratio on phase 1
IL2/In=nnn.nn	Interrupted fault current ratio on phase 2
IL3/In=nnn.nn	Interrupted fault current ratio on phase 3
Dev. Drop-off	Return to no-fault conditions
Distance Protection
Flt.Dist.L1	Fault detection in phase 1
Flt.Dist.L1E	Fault detection in phase 1 and ground
Flt.Dist.L2	Fault detection in phase 2
Flt.Dist.L2E	Fault detection in phase 2 and ground
Flt.Dist.L12	Fault detection in phases 1 and 2
Flt.Dist.L12E	Fault detection in phases 1 and 2 and ground
Flt.Dist.L3	Fault detection in phase 3
Flt.Dist.L3E	Fault detection in phase 3 and ground
Flt.Dist.L13	Fault detection in phases 1 and 3
Flt.Dist.L13E	Fault detection in phases 1 and 3 and ground
Flt.Dist.L23	Fault detection in phases 2 and 3
Flt.Dist.L23E	Fault detection in phases 2 and 3 and ground
Flt.Dist.L123	Fault detection in phases 1, 2 and 3
Flt.DistL123E	Fault detection in phases 1, 2, and 3 and ground
Loop Lp-n	Line loop used for fault detection measurements/calculations - p = 1, 2, or 3. n =
	1, 2,,3, or E.
Reverse Direc	Fault detected in reverse direction
Dis.Trip Revs	Trip on fault in reverse direction has occurred
Dis.Trip L1	Single-pole trip on phase 1 by distance protection
Dis.Trip L2	Single-pole trip on phase 2 by distance protection
Dis.Trip L3	Single-pole trip on phase 3 by distance protection
Dis.Trip L123	Three-pole trip by distance protection
>Dist. Recept	Carrier reception for pilot protection with distance protection
Dist. Send	Carrier signal sent for pilot protection with distance protection

July 27, 1995 6-11