9328900990 Rev L BE1-951 Introduction v
Application Firmware
Version and Date
Change
2.52.02, 04/02
• Added Reset capability of the BKR OPCNTR when HMI is on Screen
4.3.1.
• Enhanced reporting of the firmware version and increased number of
relay ID characters.
2.52.01, 10/01
• Added real-time clock with 8 hour capacitor backup on all BE1-951
version 2 relays.
• Added support for 4,000 point load profile demand log.
1.51.00, 03/01
• Added the 32 overpower element.
• Added the 159X auxiliary overvoltage element.
• Added the 86 and 186 virtual lockout switches.
• Updated the 25 Sync Check so that when operating in FG>BF mode,
a minimum slip frequency is required for a sync output.
• Updated the 67 function to be user selectable for reference and
tripping elements.
• The relay now performs a 2-cycle pre-dropout fault recording for use
when the BE1-951 does not trip.
• Removed the 79F logic bit (bit 29 in the logic variable status report)
and replaced it with 79RST.
1.50.02, 08/00
• Corrected bug in 25VM, Sync Check Voltage Monitor function logic.
• Revised the 60FL, VT Fuse Loss function logic. The old algorithm
required breaker status to be TRUE (“closed”) to enable the function.
• Corrected the bug in automatic setting group selection associated
with changing groups based upon recloser shot counter.
• Revised target display function for the front panel HMI to include
Distance to Fault.
1.50.01, 06/00
• Revised 60FL function. Reduced fixed time delay from 100 ms to 50
ms and coordinated order of processing of this function with voltage
tripping functions that it supervises.
• Revised the 81, Over/Underfrequency function logic. (The old
algorithm allowed a trip on two consecutive cycles beyond the
threshold setting.)
• Revised DNP protocol to pass level 2 compliance testing.
1.02.02, 04/00
• This version was released after release of version 1.50.00, which was
a major upgrade in functionality for the relay. This version was
released to correct bugs in the original functionality and was mailed to
all purchasers of the BE1-951.
• Revised power fail recovery logic and self-diagnostics function to
prevent inadvertent resets of the microprocessor when operated on
marginal AC power supply source.
• Corrected bugs in Modbus protocol.
• Revised the COMTRADE oscillographic download function to prevent
an invalid COMTRADE file from being created if the oldest record is
being overwritten by a trigger in the middle of the process of
transferring the file.
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