GE D90 Plus Instruction Manual page 634

SELF-TESTS
624
FRONT PANEL TROUBLE
Description: An error has been encountered on the front panel.
Severity: Protection is available.
If this message appears, update the order code to clear the self-test error.
HIGH TEMPERATURE
Description: The ambient temperature is outside the specifications.
Severity: Relay remains operational.
If this message appears, ensure proper ventilation.
IR CH 1 FAIL
IR CH 2 FAIL
Description: These self-tests are caused by any one of the following: low Rx power (fiber
option only), loss of signal alarm for fiber and G.703 options or RS422 clock problem (no
clock or incorrect clock), yellow bit alarm (C37.94 option only), optical transceiver SPI
interface failure (fiber option only), or Tx Fault (transmitter failure, monitored by the
transceiver).
Severity: Protection is available. Timestamping of events can be inaccurate.
If either message appears, check the inter-relay communications wiring. If the failure
persists, contact GE Digital Energy.
IRIG-B FAILURE
Description: The IRIG-B input signal is not present.
Severity: Protection is available. Timestamping of events may not be accurate.
If this message appears, ensure that the IRIG-B receiver is operational and properly
configured. Ensure that the IRIG-B cable is connected. Check cable integrity (that is, look
for physical damage or perform a continuity test). Check the input signal level.
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 can occur. The 48 volt
supply can also be impacted.
If this message appears, check that the voltage at the power supply input is within limits.
If acceptable, check that the 48 volt supply is healthy. If not acceptable, contact GE
Digital Energy.
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 configured correctly.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 14: TESTING