Control and monitoring functions
Several predefined functions are
implemented:
- activation of multiple set point profiles
- remote reset
- CT and VT monitoring
- logic selectivity
- cold load pickup (CLP)
- automatic reclosing (79)
- circuit breaker failure (BF)
- trip circuit supervision (74TCS)
- stabilization during tranformer energization (INRUSH)
- synchronisation
- CB control and monitoring.
Self test diagnostic
The run-time testing feature ensures
that the relay will provide proper and reliable protection.
Main checks concern:
- power supply
- output relays coils
- CT and VT secondary
- blocking circuit (breaks or short circuits on the pilot
wires)
