Technical Specifications Multi‑channel isolated digital input and relay drive output. Auxiliary power supply from SUE3000 main frame. Typical power consumption 7.2 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Isolation voltage 2000 V AC between field secondary‑circuit and internal logic circuit. Conformal coated surface protection against moisture and dust.
Functional Features Conditions and isolates external status signal sent to main control unit. Drives relay output for breaker closing and tripping command. On‑board LED reflects channel input‑output status.
Application Scenarios Serves as internal spare‑part component of SUE3000 high‑speed bus transfer equipment. Applied for equipment maintenance, overhaul and spare‑part replacement in power plant and industrial substation.
Performance Parameters Signal response satisfies millisecond‑level transfer‑action timing requirement. Isolation circuit suppresses secondary‑circuit electromagnetic interference.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Signal conditioning chip, optocoupler isolation and relay drive components. Conformal protective coating layer. Multi‑pin plug‑in connectors. Screw‑type signal terminals.
Structural Characteristics Flat plug‑in circuit board structure matched with SUE3000 cabinet internal slot. Board edge equipped with plug‑in connectors and wiring terminals. Fixing holes for cabinet internal installation. Weight approximately 0.65 kilogram.
Working Principle Main‑control unit command passes through back‑board connector to this interface board. Signal passes isolation and drive circuit, then outputs relay control signal to external breaker secondary loop.
Installation Requirements Cut off SUE3000 main‑frame auxiliary power supply before replacement. Insert interface board into designated internal slot and fasten fixing screws. Ensure each connector is fully inserted and locked. Verify on‑board LED status after power‑recovery, then complete whole‑equipment function test.
Usage Notes Adopt anti‑static wrist strap during disassembly‑assembly. Do not scratch conformal coating surface. Confirm main‑frame power is fully cut off before operation. Periodically inspect connector contact condition during equipment overhaul.
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