Technical Specifications Back‑plane bus interface, multi‑channel analog measuring input and pulse trigger output. Auxiliary working power 24 V DC. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Signal channel galvanic isolation design.
Functional Features Collects generator voltage and current measuring signals. Executes excitation closed‑loop regulation algorithm. Outputs trigger pulse signals to excitation power rectifier unit. Collects excitation system fault signals and uploads alarm information. Front‑panel LED indicators display module running and fault status. Built‑in hardware self‑diagnosis detects internal circuit abnormality.
Application Scenarios Spare excitation control module for ABB generator excitation cabinet. Widely used in hydropower and thermal power generating set maintenance.
Performance Parameters High‑precision closed‑loop voltage regulation performance. Fast trigger pulse response. Reliable excitation system fault diagnosis capability.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Analog sampling, regulation algorithm processing and pulse trigger assemblies. Back‑plane plug‑in connector and field signal terminals.
Structural Characteristics Standard rack plug‑in module. Front side equipped with measuring signal terminals and status LED indicators. Rear side fitted with back‑plane bus connector.
Working Principle Generator voltage and current signals input to module terminals. After analog‑digital conversion, regulation algorithm calculates required excitation output amplitude, trigger pulses are sent to power rectifier unit. Diagnosis circuit continuously monitors signal loop and hardware working condition.
Installation Requirements Cut off excitation rack auxiliary power and high‑voltage excitation power before replacement. Insert KUC321AE into target rack slot and lock fixing latch. Connect field measuring signal wiring to front‑end terminals. Ensure back‑plane connector is fully engaged. Restore power supply, download excitation parameters and verify generator voltage adjustment performance.
Usage Notes High‑voltage signal wiring shall strictly follow terminal definition. Hot‑plug operation under powered condition is prohibited. Complete parameter commissioning after hardware replacement.
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