b6 
 
Hardware / Software-
-4 
MiCOM P40 Agile P442, P444 
 
 
Relay type: P441, P442, P444 
Software 
version  
version 
Model 
number 
Date of 
issue 
Full Description of changes  S1 Compatibility 
 P444 model with 24 optos/32 outputs (Omron) – Universal optos – Italian Language – DNP3  
A3.0 
A or B  
for P441/442
 
 
A 
for P444
 
05 
05/2001 
P444/DNP3/NCIT/universal input/5 languages  
Italian model 4050A for P444  
P441/P442 models 050A (48Vcc) or 050B (Universal optos) 
DDB with 1022 cells/Discrimination timer in AR/New DDB distance 
cells/DEFlogic/SOTF timer/Broken Conductor/Com. 
V2.02 + patch 
A3.1  06 
12/2001 
SOTF-TOR/Z4 block Pswing/CB Fail/IEC103 disturbance/U-I Prim-sec / kms-
Miles / 3P fault in Power Swing/Z1-Z2 measurement for a small characteristic / 
Ext Trip+5msec/New settings 
V2.02 + patch 
A3.2  06 
05/2002 
EEPROM correction/New general distance Trip equation (Block scheme)/RCA 
angle/IEC 103 correction/Fault Loc/DEF P selec 
V2.02 + patch 
A3.3 
06 
09/2003 
Retrip CB/Ffailure/31
st
 December for Drec/Disturbance (compressed or not 
compressed) and communication correction / Voltage memory / DEF/ Ext 
Chksync/P.Phase ref Chksync / Sync live-live / I broken Cond./ Px4X with Px3x 
in IEC103/2UN Vref Sync/Z1 & Ang<55° 
V2.02 + patch 
A3.4 
06 
10/2003 
Last A3.x branch version: 
Time sync cell in ModBus/ Optos tagging in event/ CB 
close DNP3/ Status opto with setting group/ Im displayed in Measurement 
mode/ IEC 103 
V2.02 + patch 
Note: The software version / hardware version / model number can be found through the setting in “system data” viaMiCOM S1 or LCD front panel. 
Note 2: Version A3.0, A3.1 and A3.3 not distributed (mandatory upgrade). Version A3.3: Recommanded upgrade.