Technical Specifications Multi‑channel analog sampling input, pulse drive output channel. Auxiliary power supplied by excitation rack, typical power consumption 8.3 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, channel isolation voltage 2000 V AC.
Functional Features Samples generator terminal voltage, stator current and rotor feedback signal. Executes excitation closed‑loop regulation algorithm. Outputs trigger pulse for thyristor power unit. Stores fault and event records. Built‑in comprehensive hardware self‑diagnosis function.
Application Scenarios Applied for large‑and‑medium generator excitation system in power plant. Used for equipment maintenance, overhaul and spare‑part replacement.
Performance Parameters High‑speed regulation algorithm satisfies generator excitation dynamic adjustment requirement. Non‑volatile memory keeps fault records after power loss. Self‑diagnosis accurately captures sampling circuit and output channel faults.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Industrial‑grade processor, high‑precision sampling chip. Conformal protective coating. Multi‑pin back‑plane plug‑in connectors. Screw‑type signal wiring terminals.
Structural Characteristics Standard plug‑in circuit board for excitation cabinet slot installation. Board edge fitted with back‑plane connector and external signal terminals. Mechanical fixing holes for fastening. Weight approximately 0.70 kilogram.
Working Principle After power‑on, board completes hardware self‑check. It samples generator voltage and current signals continuously. Internal processor executes excitation regulation algorithm according to set parameters. Output trigger pulse controls thyristor conduction angle to adjust excitation current. Fault information is stored in local memory meanwhile.
Installation Requirements Completely cut off excitation cabinet main power and control power before replacement. Insert board into designated slot and tighten fixing screws. Ensure all connectors are fully locked. Restore power‑supply, verify configuration parameters and complete excitation function test.
Usage Notes Strictly implement anti‑static protection during handling. Do not scratch conformal coating. Prohibit plug‑and‑unplug under powered condition. Back‑up excitation parameters and historical fault records before board replacement.
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