Functions
2.11 Monitoring Functions
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
218
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.
Fuse Failure Monitor External
(voltage transformer)
Message „VT FuseFail>10s“
(169)
„VT FuseFail“ (170)
As allocated
Trip circuit monitoring External (trip circuit or
control voltage)
Message „74TC Trip cir.“ (6865) As allocated
Secondary voltage transform-
er circuit monitoring
External (voltage
transformer circuit in-
terruption)
Message „VT brk. wire“ (253) As allocated
Calibration data fault Internal (hardware) Message „Alarm NO calibr“ (193) As allocated
Monitoring Possible Cause Malfunction Re-
sponse
Message (No.) Output
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