A.2
SEL-787 Relay Instruction Manual Date Code 20150130
Firmware and Manual Versions
Firmware
➤ Resolved an issue where the front panel showed a blank page after
resetting a TRIP message.
➤ Modified the firmware to make the MATHERR Relay Word bit
visible.
➤ Improved the frequency measurement and frequency element
accuracy to ±0.01 Hz resolution.
➤ Implemented a firmware enhancement to preserve an existing IEC
61850 CID file while upgrading from a previous firmware version.
➤ Revised the REF element logic to improve the sensitivity for
applications with different neutral and phase CT ratings.
➤ Added Flash File System support to make settings and other
miscellaneous nonvolatile data storage more robust.
➤ For relays configured with delta-connected CTs, resolved an issue in
R207 and R208 firmware versions where power calculations in the
MET report were incorrectly scaled down by . Protection
elements were not affected by this issue.
➤ For relays configured with delta-connected CTs, resolved an issue
where synchrophasor current magnitude calculations in the MET PM
report were incorrectly scaled up by . Protection elements were
not affected by this issue.
➤ For relays configured with delta-connected CTs, resolved an issue in
R207 and R208 firmware versions where current harmonic
calculations in the MET H report were incorrectly scaled down by
. Protection elements were not affected by this issue.
➤ For relays configured with delta-connected CTs, resolved an issue
where Through Fault (TFE) accumulated current calculations in the
TFE report were incorrectly scaled up by .
➤ Resolved an issue that was causing small jumps in the angle
calculations for analog quantities.
➤ Addressed an issue with setting the IP address of more than one DNP
session to 0.0.0.0. The relay now allows only one DNP session at IP
address 0.0.0.0.
➤ Revised the firmware to support front-panel HMI part replacement.
The function of the HMI has not changed.
➤ Resolved an issue with the settings change STSET being reported as
OFFLINE via DNP.
➤ Resolved an issue with the data type “Units_0” in the IEC 61850 ICD
file by changing the unit data type name to SIUnit.
➤ Resolved an initialization issue with the V/Hz (24) element after
changing DELTA_Y and 24WDG settings. The element was always
initialized and functioned correctly if the settings were changed from
the default (DELTA_Y := DELTA and 24WDG := WYE) to any other
setting combination. The element was not initialized correctly if the
user started with settings DELTA_Y := WYE and 24WDG := WYE
and changed to other combinations. The element was initialized
correctly for any setting combination if the relay was restarted after a
settings change.
➤ Resolved an issue with the V/Hz element for the settings combination
DELTA_Y:= DELTA and SINGLEV := Y. With this settings
combination, the V/Hz did not function and the MET report showed
zero for V/Hz.
Firmware version R209 is for upgrading relays with R200–R208.
Table A.1 200 Series Firmware Revision History (Sheet 2 of 4)
Firmware Identification (FID) Number
Summary of Revisions
Manual
Date Code
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