GE D90 Plus Instruction Manual page 545

CHAPTER 14: TESTING
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
NON-VOLATILE DATA LOST
Description: Non-volatile data was lost.
Severity: Protection is available; however, some data loss may be encountered.
If this message appears, check all logs for lost or corrupt data. This includes the event
recorder, transient recorder, fault reports, disturbance recorder, data logger, and phasor
measurement unit recorder.
OVERFLOW RESULT
Description: An overflow error has occurred during automation logic execution.
Severity: Automation logic execution is not suspended, and protection is still available.
Automation logic implements saturated arithmetic operations. An operation resulted in
a saturated result while running automation logic. Execution continues with the
saturated result. Analyze and correct the automation logic equations.
POWER SUPPLY TROUBLE
Description: The power supply module has a problem.
Severity: Protection is available; however, power supply failure may occur. The 48 volt
supply may also be impacted.
If this message appears, check that the voltage at the power supply input is within limits.
If OK, check that the 48 volt supply is healthy. If not OK, replace the power supply
module.
PROTECTION LOGIC ERROR
Description: There is an error within a protection FlexLogic™ equation.
Severity: Protection is not available, and relay is not operational.
If this message appears, modify the protection FlexLogic™ to make it valid and reload.
REMOTE DEVICES OFF
Description: A remote device is specified in the configuration for GOOSE messaging but is
not connected to the network.
Severity: Protection is available. GOOSE messaging with the offline device is not available.
If this message appears, check that all devices that are specified for GOOSE messaging
are connected to the network, are functioning properly, and are correctly configured.
SETTINGS ERROR
Description: The device contains invalid setting values.
Severity: Protection is not available.
If this message appears after an order code update or firmware upgrade, clear the
message and load settings into the D90
SNTP ERROR FAILURE
Description: The SNTP server is not responding.
Severity: Protection is available. Timestamping of events may not be accurate.
If this message appears, check that the SNTP server is operational and correctly
configured. Check for Ethernet LAN problems.
UNDEFINED RESULT
Description: An error has occurred during automation logic execution.
Severity: Automation logic execution is not suspended, and protection is still available.
Analyze and correct the automation logic equations.
Plus
. In all other cases, contact GE Grid Solutions.
SELF-TESTS
537