Technical Specifications Multi‑channel analog sampling for VT and CT signal. Auxiliary power supplied by SUE3000 main frame, typical power consumption 8.5 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Galvanic isolation between sampling circuit and logic circuit. Conformal coated surface protection. Complies with IEC 60255 relay‑related standards.
Functional Features Completes high‑precision sampling for voltage and current secondary signal. Executes all high‑speed bus transfer logic algorithms. Stores transfer event and fault record data.
Application Scenarios Core spare‑part component for SUE3000 high‑speed bus transfer equipment. Used for equipment maintenance and spare‑part replacement in power plant and large‑industrial substation.
Performance Parameters Sampling precision satisfies power‑system measurement requirement. Logic calculation guarantees 30 ms‑level fast transfer action. Non‑volatile memory keeps event record after power loss. Diagnosis function detects main‑board hardware abnormality accurately.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. High‑performance industrial processor, analog sampling chip. Conformal protective coating layer.
Structural Characteristics Internal plug‑in circuit board structure matched with SUE3000 cabinet slot. Board‑edge equipped with back‑plane connector and signal terminals.
Working Principle After main‑frame power‑on, main‑control board completes hardware self‑check. It receives analog sampling signal from VT and CT, executes transfer‑logic judgment according to preset parameter setting. When transfer trigger condition is met, it sends control command to interface board. Event and fault data are stored in local non‑volatile memory, meanwhile data can be output through communication channel.
Installation Requirements Completely cut off SUE3000 main‑frame auxiliary power before replacement. Insert main‑control board into designated internal slot and tighten fixing screws. Confirm connectors are fully engaged. Restore power‑supply after installation, download matching configuration parameters, and perform full‑function transfer test.
Usage Notes Strictly implement anti‑static protection during disassembly‑assembly. Avoid scratching conformal coating. Do not plug‑and‑unplug board under powered condition.
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