Table 3: 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.
2.4.1
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.
620 series overview
1MRS757644 H
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620 series
Technical Manual
