Access control and cybersecurity

Cybersecurity measures are implemented to secure safe

operation of the protection and control functions. The relay

supports these measures with configuration hardening

capabilities, encrypted communication, Ethernet filter and rate

limiter, security event logging and user access control.

The relay supports role-based user authentication and

authorization with individual user accounts as defined in IEC

62351-8. All user activity is logged as security events to an

audit trail in a nonvolatile memory and sent as messages to the

SysLog server. The nonvolatile memory does not need battery

backup or regular component exchange to maintain the

memory storage. File transfer and Web HMI use communication

encryption protecting the data in transit.