Technical Specifications Configurable analog current‑voltage input channels, binary input ports, relay output contacts. Multiple communication interfaces according to ordering variant. Auxiliary DC operating power supply. Operating temperature ‑25 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. On‑board fault event and disturbance recording storage.
Functional Features Samples feeder secondary current and voltage signals continuously. Executes configurable over‑current, earth‑fault and voltage‑related protection functions. Drives relay contacts for circuit‑breaker trip and close operation. Supports local human‑machine parameter setting and status browsing. Transmits measurement data, alarm events and fault records to upper SCADA system. Front‑panel LED indicators show device operation, protection trigger and fault status. Built‑in hardware self‑diagnosis monitors sampling channels, I/O contacts and internal circuit condition.
Application Scenarios Spare compact feeder protection relay for medium‑voltage substation feeder bay. Used for power distribution cabinet maintenance and equipment replacement.
Performance Parameters Reliable protection action response performance. Accurate electrical measurement capability. Stable local event log storage function.
Material Composition Metal substation‑grade housing. Internal processing unit, analog sampling module, binary input‑output assembly and front‑panel HMI unit. Rear‑side screw terminals for secondary signals, power and communication wiring.
Structural Characteristics Cabinet panel embedded installation structure. Front side includes display, operation keys and status LED indicators. Rear side equipped with multi‑group field wiring terminals.
Working Principle After power‑on initialization, REF615C‑C HCFFAEAGANB2BAN1XC acquires secondary analog and binary signals. Protection logic cycles continuously. When fault condition meets setting values, output relays execute trip action.
Installation Requirements Complete CT‑VT wiring, binary I/O wiring, power and communication wiring following engineering drawings. Restore power supply, download protection setting files, verify measurement value, protection logic and remote data transmission function.
Usage Notes Strictly avoid CT secondary open‑circuit during installation. Hot‑plug under powered state is prohibited. Validate protection setting parameters after commissioning.
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