Siemens SIPROTEC 7SJ62 Manual page 218

Functions
2.11 Monitoring Functions
Monitoring
Fuse Failure Monitor
Trip circuit monitoring
Secondary voltage transform-
er circuit monitoring
Calibration data fault
1)
After three unsuccessful restart attempts, the device is shut down.
2)
DOK = "Device Okay" = Ready for service relay drops off, protection and control functions are blocked.
Group Alarms
Certain messages of the monitoring functions are already combined to group alarms. A listing of the group
alarms and their composition is given in the Appendix A.10. In this case, it must be noted that message 160
„Alarm Sum Event" is only issued when the measured value monitoring functions (8101 MEASURE.
SUPERV) are activated.
218
Possible Cause Malfunction Re-
External Message
(voltage transformer)
External (trip circuit or Message
control voltage)
External (voltage Message
transformer circuit in-
terruption)
Internal (hardware) Message
Message (No.)
sponse
„VT FuseFail>10s"
(169)
„VT FuseFail" (170)
„74TC Trip cir." (6865)
„VT brk. wire" (253)
„Alarm NO calibr" (193) As allocated
C53000-G1140-C207-2, Release date 01.2008
Output
As allocated
As allocated
As allocated
SIPROTEC, 7SJ62/64, Manual