Technical Specifications Sampling Objects：Converter voltage, current analog signals Isolation：Galvanic isolation between sampling side and control circuit Operating Temperature：0 ℃ ~ +70 ℃ Mounting：Screw‑fixed inside converter cabinet Connection：High‑voltage sampling terminals, signal flat‑cable connectors
Functional Features ‑ Multi‑channel high‑precision voltage & current signal sampling ‑ Signal conditioning and galvanic isolation processing ‑ Transmit sampled data to main control board ‑ Suppress electromagnetic interference inside power‑electronic cabinet
Application Scenarios Signal sampling hardware for high‑power converter; replacement spare part for converter cabinet overhaul.
Material Composition High‑voltage‑resistant multilayer PCB, sampling chips, isolation modules, high‑voltage passive components, signal connectors.
Structural Features Rectangular dedicated sampling circuit board; high‑voltage sampling terminals and low‑signal connectors distributed on board edges; mounting holes for cabinet fixation.
Working Principle Original voltage/current signals from power unit access sampling terminals. After isolation and conditioning, sampled signals are sent to main control board for algorithm calculation and protection judgment.
Installation Requirements Secure board in designated cabinet position; strictly follow wiring diagram for high‑voltage sampling wiring; guarantee insulation clearance for high‑voltage terminals.
Usage Notes Complete power‑off and capacitor discharge before maintenance; do not touch high‑voltage terminals with cabinet powered on; perform ESD protection during board handling.
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