Micom P631, Technical Manual, Page: 616 / 638

Version Changes
MAIN Phase reversal logic is now available. This feature
allows that the phase reversal switch in motor/
generator applications can be located inside the
protection zone of the transformer differential relay.
The vector group numbers of the power transformer
are now settable per parameter subset. This feature
can be used in protection of phase angle regulating
transformers.
DIFF
Bug fixing:
●
The trip signals of the 3 measuring systems (e.g.
(041 002) DIFF: Trip signal 1 were falsely
instantaneously raised, regardless of the set trip
delay time. Note that the (041 075) DIFF: Trip
signal was correctly timed.
IDMTx Accuracy of tripping time is improved, particularly in
case of the characteristic “IEC extremely inverse”.
P631
‑ 305
‑ 403/404
‑ 610
Release: 2006-06-23
Hardware
No changes at this time.
During the release proceedings of software version –
610, a new option with the order extension number
-937 for the Ethernet module was released and
therefore the hardware version changes from -304 to
-305.
Diagram
No changes.
Software
No changes.
P631
‑ 305
‑ 403/404
‑ 610-710
Release: 2006-06-23
Hardware
No changes.
Diagram
No changes.
Software
Note:
This version is not released for applications with IEC
61850 systems! Version -610-714 may be used as an
alternative.
P631 A5 P631 Version History
A5-8 P631/EN M/R-11-C // P631-310-650