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SEL-421
SEL-421 SV Merging Unit
421#CB4N
- IEC 61850-9-2 Sampled Values merging unit (publisher) for a digital secondary system solution
- Distance protection plus subcycle elements and series compensation logic
- Power supply: 125–250 Vdc or 110–240 Vac
- 4U chassis and horizontal rack mount
- 5 A secondary current inputs
- 300 V phase neutral secondary voltage inputs with conformally coated circuit boards
- 24 optoisolated level-sensitive inputs, 2 standard Form A outputs, and 6 high-speed high-current interrupting Form A outputs
- Ethernet card with four 10/100BASE-FX connectors
- Protocols: FTP, Telnet, Synchrophasors, DNP3, and IEC 61850 with Sampled Values subscription