Siemens SIPROTEC 4 User Manual page 199

Monitoring
Secondary voltage transformer
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
message 160 Alarm Sum Event is only issued when the measured value monitoring functions (8101
MEASURE. SUPERV) are activated.
SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016
Possible Causes Malfunction
Response
External (voltage Message
transformer circuit
interruption)
Internal (hardware) Message
Message (No.)
VT brk. wire (253) As allocated
Alarm NO calibr
(193)
F.4 Group Alarms. In this case, it must be noted that
Functions
2.12 Monitoring Functions
Output
As allocated
199