Technical Specifications High‑power side signal sampling interfaces, control side signal output connectors, auxiliary DC power supply input. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coating for anti‑pollution protection.
Functional Features Completes voltage and current signal sampling from power unit. Realizes galvanic isolation between high‑power circuit and low‑voltage control circuit. Converts power unit status signal into logic signal for main controller processing. Detects power unit over‑current and over‑temperature fault condition.
Application Scenarios Spare power interface board for ABB high‑power converter and excitation cabinet. Used for power energy equipment overhaul and spare‑part replacement.
Performance Parameters Stable power signal sampling and isolation performance. Reliable fault status signal transmission characteristic.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Power signal sampling circuit, isolation assemblies, logic signal conditioning circuit. Multi‑pin plug‑in connectors and metal screw mounting hardware. Conformal protective coating layer.
Structural Characteristics Rectangular circuit‑board structure. Reserved screw mounting holes for cabinet installation.
Working Principle UAC326AE receives auxiliary DC working power. Power unit voltage and current signals enter sampling circuit.
Installation Requirements Fasten board to cabinet mounting bracket with screws. Fully insert and lock each plug‑in connector. Restore auxiliary power supply, verify sampling signal and fault feedback function under static state.
Usage Notes High‑power related wiring must strictly follow safety specification. Anti‑static operation is required. Hot‑plug under powered condition is prohibited. Avoid mechanical scratch on conformal coating surface.
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