Table 6: Predefined user categories
Username User rights
VIEWER Read only access
OPERATOR •
Selecting remote or local state with (only locally)
• Changing setting groups
• Controlling
• Clearing indications
ENGINEER
• Changing settings
• Clearing event list
• Clearing disturbance records
• Changing system settings such as IP address, serial baud rate or
disturbance recorder settings
• Setting the protection relay to test mode
• Selecting language
ADMINISTRATOR
• All listed above
• Changing password
• Factory default activation
For user authorization for PCM600, see PCM600 documentation.
2.6.1 Audit trail
The protection relay offers a large set of event-logging functions. Critical system and
protection relay security-related events are logged to a separate nonvolatile audit trail
for the administrator.
Audit trail is a chronological record of system activities that allows the reconstruction
and examination of the sequence of system and security-related events and changes in
the protection relay. Both audit trail events and process related events can be
examined and analyzed in a consistent method with the help of Event List in LHMI
and WHMI and Event Viewer in PCM600.
The protection relay stores 2048 audit trail events to the nonvolatile audit trail.
Additionally, 1024 process events are stored in a nonvolatile event list. Both the audit
trail and event list work according to the FIFO principle. Nonvolatile memory is based
on a memory type which does not need battery backup nor regular component change
to maintain the memory storage.
Audit trail events related to user authorization (login, logout, violation remote and
violation local) are defined according to the selected set of requirements from IEEE
1686. The logging is based on predefined user names or user categories. The user audit
trail events are accessible with IEC 61850-8-1, PCM600, LHMI and WHMI.
Section 2 1MRS757456 D
REF611 overview
20 REF611
Application Manual
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