APPLICATION
PROGRAM
FIRMWARE
VERSION
Change
BE1-951
Introduction
v
1.02.01/1-31-00
1.02.00/11-10-99
1.01.00/8-26-99
Revised the following reporting and alarm functions:
Revised power fail recovery logic and self diagnostics function to reduce
the possibility of inadvertent resets of the microprocessor when operated
on marginal AC power supply source.
Added or revised the following protection and control functions:
Revised the ASCII command interface to use SG-CTG as the command to
set the CT ratio for the Optional Independent Ground input. Originally, the
command was SG-CTN. The change was made to make it consistent with
the conventions used. IN, the neutral current, is the residual of the three-
phase current input. IG, the ground current, is the current measured at the
independent ground current input.
Note
The above change makes all previous versions of firmware incompatible with
BESTCOMS, Graphical User Interface Software.
Revised the 60FL, VT fuse Loss logic function to allow automatic blocking
logic to be individually set for current and voltage functions.
Corrected bug in 51/27R voltage control phase time Over current function
that blocked Over current tripping for a 60FL condition when voltage
control was set to Mode C but disabled by setting (S#-27R=0,C)
Added or revised the following reporting and alarm functions:
Revised oscillographic recording function to increase memory allocation to
240 cycles of sample data.
Revised the target reporting function to allow various functions to adapt the
targets that they post based upon user setup parameters.
Revised the TCM, Trip Circuit Monitor function to allow its application with
AC tripping voltages.
Revised Watt/VAR metering and demand functions for full four quadrant
metering.
Revised the V2, negative sequence volgate measurement function to
properly scale to V phase to neutral base regardless of the three phase VT
connection parameter setting.
1.00.01/5-12-99
Initial Release
Hardware Version
Change
10-5-01
05-30-99
Added battery backup to H1 case only. Change overlay to incorporate new
adhesive label.
Initial Release.
