Maintenance release of 670 series version 1.1 (1.1r25)


Dear Reader,

A new revision of the 670 series version 1.1 has been released. The new revision designation of the 670 series is 1.1r25.

The following issues have been addressed in the new revision:

  • Open CT detection for line differential protection
  • Line differential protection performance at external faults
  • Line differential protection charging current compensation
  • Transformer differential protection performance at external faults
More information can be found in the release note.

Recommendation to update
We recommend updating RED670 to version 1.1r25 in multi-breaker applications where one LDCM channel is used.

IED Connect support
Updating to the new firmware does not require any changes in the installed IED Connectivity Packages for RelionĀ® 670 series. The connectivity packages are available in the PCM600 Update manager.

Ordering and delivery
All orders for 670 series version 1.1 ordered from today will be delivered including the improvements made in this maintenance release.

Procedures for ordering the firmware update
Please contact your local ABB.

Kind regards,

Lars Frisk
Global Product Manager
Substation Automation Products