P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-14 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
C B Dec 2001
All builds released to production. Based on 11B software
Fixed a problem in P541 & P542 CS103 builds where the
voltage and power measurements were not being marked as
invalid
Fixed a problem in P544 & P546 where the SEF current
measurement was incorrect when set to 1A & 60Hz
Recommended upgrading to 11G or later
V2.03 or Later P54x/EN T/D11
D B Jan 2002
All builds released to production. Based on 11C software
Resolved possible reboot caused by disturbance recorder
Resolved possible reboot caused by invalid MODBUS
requests
Resolved problem when internal loopback was selected with
external clocks
Resolved a problem which caused the loss of
IEC 60870-5-103 class 1 messages
Recommended upgrading to 11G or later
V2.03 or Later P54x/EN T/D11
11
Cont.
E B Oct 2002
All builds released to production. Based on 11D software
Resolved incorrect operation of C diff failure alarm in 3
terminal schemes
Correct operation of capacitive charging current compensation
in 3 terminal schemes
Resolved problem which caused short duration GPS failure
alarms
Recommended upgrading to 11G or later
V2.03 or Later P54x/EN T/D11
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