P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-2 MiCOM P543, P544, P545 & P546
H
Relay type: P54x …
Software
Version
Major Minor
Hardware
Suffix
Original
Date of Issue
Description of Changes
S1
Compatibility
Technical
Documentation
03
Cont.
B A Feb 2002
All builds released for maintenance upgrades
Resolved possible reboot caused by disturbance recorder
Resolved possible reboot caused by invalid MODBUS
requests
Resolved a loss of measurements (column 3 & 4) problem that
can occur in 3 terminal applications
Problem whereby MiCOM S1 could only set group 1 line
length corrected
Fixed capacitive charging current compensation in P544
Corrected P544 display of phase C current phase angle
IDMT curves improvements
Removed rounding error in calculation of tp
Menu dependence using ripple bit corrected
Directional/non-direction earth fault fixed
Battery fail alarm improvements
Power measurements read over MODBUS may be incorrect
Resolved problem caused by rapid changing self resetting
alarm resetting the relay when read key pressed
Prevented software errors from clearing event log
V1.09 or Later TG8613B
A A Aug 2000
Trip conversion logic moved from internal fixed logic to PSL
V1.10 or Later TG8613B
04
B A Mar 2001
Only P543 CS103 builds released
Improvements to the CS103 time synchronization
V1.10 or Later TG8613B
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