P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-38 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
52
A K
Addition of flexible settings for distance quadrilateral top line
Reduced minimum setting for IN> I2pol Set
Addition of propagation delay times to Fault Record
Default setting for 450B 'I< Current Set' reduced to 50mA.
Enhancement to self checking of output relays
Change tunnelled courier address to follow the 1st Rear Port’s
KBUS or CS103 address.
52
B K July 2007
Release of P543, P544, P545 & P546 with distance protection
based on 52A.
Phase comparison protection P547 added to range
Improvements to VTS
Improvements to slow power swing detection
Corrected power swing detecting when both distance and
current differential enabled
Corrections to enable/disable of Autoreclose
Resolved a problem relating to CT Ratio’s not being restored
when restoring default settings
Resolved a problem with the Disturbance Recorder which
saturates for High current levels into 5A CT.
P54x_EN_AD_J84
52
C K July 2007
Release of P543, P544, P545 & P546 with distance protection
based on 52B.
Tilt angle of ground quadrilateral Characteristic corrected
Minor correction to fault record
Corrections to over voltage stage 2 inhibit
Patch for V2.14
P54x_EN_MJ74
+ addendum
P54x_EN_AD_J84
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