Siemens manual Example Sys em Fault Messages, 7SA511 Line Protection Re ay Chapter

7SA511 Line Protection Re ay Chapter 6

The second mess ge, 002, displays the time the fault event began including milliseconds. The second line containsFau0021lthet:0message:C23:3“Fault3.2.”23

Sequence Number

Event Message

Time fault began (24 hour format)

Subsequent display messages will indicate all relay events that occur after initial detection of the fault until drop-out. Each message includes the elapsed time from initial detection (message 002) in milliseconds. Some messages may be followed by a Ctag, which indicates the event is logged at pickup (see above example). The next section in this chapter gives a complete example of messages displayed following a system fault.

If your relay is equipp d with the automatic reclose function and an automatic reclose occurs, then the system fault is finished when the last reset time expires whether or not the automatic reclose is successful. Thus, the otal fault clearance procedure inclusive of automatic reclose cycles occupies only one fault record

6.3.2 Example Sys em Fault Messages

In the following di p ay examples, the fault is identified as a distance protection fault detection in phase 1 and neutral, resulting in a three-pole trip command being issued 6 milliseconds after the fault was detected. Messages 001 and 002 are repeated, from the previous section, for your convenience.

Date the fault wasSystem0011de ected1/0Flt65and2/he94fault number:

Time of fault detection:Fault:C00210:23:33.223

July 27, 1995 6-9