Relay type: P341 …
Software
Version
Major Minor
Hardware
Suffix
Original Date
of Issue
S1
Compatibility
Technical
Documentation
Description of Changes
30 B J Nov 2004
Modification to prevent reboot when large number of control
and settings are sent to relay in quick succession over DNP
3.0.
Correction to 2nd rear comms port channel failure for
P34xxxxxxxxxxxJ relays only.
V2.11 or later P341/EN M/E33
31 A J Apr 2005
Independent derived/measured neutral voltage protection
(59N). P341 has 2 stages of measured and 2 stages of
derived neutral voltage protection.
Previous software versions included 2 stages of measured or
derived neutral voltage protection.
1 definite time stage of negative phase sequence overvoltage
protection (47). Same as P14x (47) function.
4 definite time stages of negative phase sequence
overcurrent protection (46OC). Same as P14x (46OC)
function.
P341 minimum three phase power settings reduced to 2%Pn,
previously 7%Pn.
Correction to DNP 3.0 software where settings download
from MiCOM S1 can fail for relays that have model
dependent I/O configurations.
Minor bug fixes
V2.11 or later P341/EN M/E33
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