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UR Family Firmware 5.84 - Release Notes
U
Fixed DSP self-test error to record events during DSP failure and allow user pushbuttons to operate
Products: All except C30
Impacted firmware: 5.40 to 6.05, 7.00 to 7.25, 7.30, 7.31
Corrected firmware: 5.84, 6.06, 7.26, 7.32, 7.12K, 7.40
Workaround: None
Description: No events are recorded when the relay experiences DSP self-test error, for example Module
Failure 08. After powering up the relay, depending on the firmware version, the timestamps are the same
as the Module Failure 08 timestamp or no events are recorded at all.
The new releases fix the issue.
GE tracking number: 726-21
F
Improved security in IOC elements
Products: All except B90, C30, T35
Impacted firmware: All to 6.06, 7.00 to 7.27, 7.30 to 8.20
Corrected firmware: 5.84, 6.07, 7.28, 8.21
Workaround: None
Description: In previous releases, in a very rare case of bit flip in the DSP memory or current drop, Phase,
Neutral, and Negative-sequence IOC can inadvertently misoperate before a self-test error is detected.
In the new releases, a new trip security element is added to supervise IOC operation to confirm
independently from IOC itself that the operate quantity follows the “system fault” signature. This element
monitors phasors and raw samples in each phase and, based on the changes of these quantities,
validates the fault presence. The element does not have any settings and can be disabled during testing if
needed, using the Test Mode Function.
GE tracking number: 728-10
F
Improved security in differential elements
Products: B30, B90, G30, G60, M60, T35, T60
Impacted firmware: All to 6.06, 7.00 to 7.27, 7.30 to 8.20
Corrected firmware: 5.84, 6.07, 7.28, 8.21
Workaround: None
Description: In previous releases, in a very rare case of bit flip in the DSP memory or current drop, the
differential element can inadvertently misoperate before a self-test error is detected. In the new releases,
a new trip security element is added to supervise differential element operation to confirm independently
from the differential element itself that the operate quantity follows the “system fault” signature. This
element monitors phasors in each phase and each source and, based on the changes of these quantities,
validates the fault presence. The element does not have any settings and can be disabled during testing if
needed, using the Test Mode Function.
GE tracking number: 728-11
E
Increased range of “Voltage Cut-Off Level” setting to 0.1 to 2.0 V
Products: All except C30
Impacted firmware: All to 6.06, 7.00 to 8.03
Corrected firmware: 5.84, 6.07, 8.10 and up
Workaround: None
Description: In previous versions, the range of the “Voltage Cut-Off Level” setting is 0.1 to 1.0 V.
In the new releases, the range of the setting increases to 0.1 to 2.0 V. Settings conversion in the EnerVista
software preserves the Voltage Cut-Off Level value from the original settings. The software for the current
release allows usage of the new extended range for those firmware versions that have been corrected.
GE tracking number: 810-43