Technical Specifications Multi‑channel voltage and current analog signal input, isolated data output to back‑plane bus. Auxiliary power 24 V DC, typical power consumption 7.3 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, signal isolation voltage 2100 V AC.
Functional Features Collects multi‑path voltage and current sampling signals from power circuit. Completes signal filtering, conditioning and galvanic isolation. Transmits processed measurement data to main controller via back‑plane bus. On‑board LED reflects signal channel operating status. Built‑in hardware self‑diagnosis detects signal‑loop breakage and short‑circuit faults. Conformal coating improves environmental adaptability.
Application Scenarios Internal measurement spare‑part for ABB high‑power power conversion equipment. Used for power plant and heavy‑industry electrical equipment maintenance and spare‑part replacement.
Performance Parameters High‑precision signal conditioning ensures measurement data accuracy. Galvanic isolation effectively suppresses high‑voltage electromagnetic interference from power loop. Self‑diagnosis accurately locates signal‑loop hardware faults.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Multi‑channel analog signal conditioning and optocoupler isolation assemblies. Conformal protective coating. Back‑plane plug‑in connectors and field sampling‑signal input terminals.
Structural Characteristics Plug‑in circuit board matching power cabinet rack slot. Board edge equipped with back‑plane bus connector and analog‑signal input terminals. Reserved mechanical fixing holes. Weight approximately 0.70 kilogram.
Working Principle After power‑on, board completes hardware self‑check. Power‑loop sampling analog signals enter through field input terminals. Signals go through filtering, conditioning and galvanic‑isolation processing. Valid measurement data is transmitted to main controller via back‑plane bus. Internal diagnosis circuit monitors operating state of every signal channel continuously.
Installation Requirements Cut off all high‑voltage power and auxiliary power of power cabinet before replacement. Insert 3BHB007209R0102 into corresponding slot and tighten fixing screws. Ensure back‑plane connector is fully locked. Complete field sampling signal wiring. Restore power supply and calibrate analog‑signal sampling precision.
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