The recorded information can be accessed locally via the user interface on the relay front
panel and can be uploaded for subsequent fault analysis.
Self-supervision and test function
The relay’s built-in self-supervision system continuously monitors the state of the relay hardware and the operation of the relay software.
Any fault or malfunction detected will signal an alert for the operator.
A permanent relay fault will block the protection functions of the relay to prevent incorrect relay operation.
The relays support a built-in test mode which enables the user to test the relay HMI and binary outputs.
Trip-circuit monitoring
The trip-circuit monitoring continuously monitors the availability and operability of the trip circuit.
It provides open-circuit monitoring both when the circuit breaker is in its closed and in its open position.
It also detects loss of circuit-breaker control voltage.
Access control
To protect from unauthorized access and to maintain the integrity of information, the relays are armed with a three level,
role-based user authentication system with individual passwords for operator, engineer and administrator levels.
There are two alternative password protection options.
The default is a combination of different navigation keys.
The alternative is an alpha-numeric password.
The user can select the password option based on their requirement.
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