F50N/51N, F51BF, F68
Appropriate for protection of programmable time curvy, earth leakage relay, MV&;HV energy transmission and distribution systems.
Phase and neutral current inputs can be selected as 1 A or 5 A.
Neutral current input circuit has active filter percolated 3.harmonic.
Two pieces of program selected by digital input and serial port can be set.
- 3 pieces of protection of earth leakage short-circuit
- Selectional double sets program
- Time-labelled failure registration
- Programmable output relays
- Program blockage output and input for selectivity of pilot line
- Protection of pilot circuit breaker failure
- Modbus communication protocol
- UL/CSA listing
