Technical Specifications Expanded multi‑channel analog signal input, isolated signal output to back‑plane bus. Auxiliary power supplied by excitation rack, typical power consumption 7.2 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, signal isolation voltage 2000 V AC.
Functional Features Expands analog signal acquisition capacity for excitation system. Collects generator auxiliary measurement analog signals. Completes signal conditioning and galvanic isolation. Transmits processed data to main regulator through back‑plane bus. On‑board LED reflects channel operating status. Built‑in hardware self‑diagnosis for signal‑loop faults.
Application Scenarios Expansion spare‑part for UNITROL series generator excitation systems. Used for power‑plant excitation‑system upgrading and equipment maintenance.
Performance Parameters High‑fidelity processing for multi‑channel analog signals. Galvanic isolation blocks external circuit interference. Self‑diagnosis captures signal‑loop breakage and short‑circuit faults.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Multi‑channel signal‑conditioning components, optocoupler isolation assemblies. Conformal protective coating. Back‑plane plug‑in connectors and field‑signal input terminals.
Structural Characteristics Plug‑in circuit board matching excitation cabinet rack slot. Board edge equipped with back‑plane bus connector and multi‑channel analog‑signal input terminals. Reserved mechanical fixing holes. Weight approximately 0.68 kilogram.
Working Principle After power‑on, board completes hardware self‑check. Multi‑path auxiliary measurement analog signals enter through field‑input terminals. Signals go through conditioning and galvanic‑isolation processing. Valid measurement data is transmitted to excitation main regulator via back‑plane bus. Diagnosis circuit monitors each acquisition‑channel running state continuously.
Installation Requirements Cut off excitation rack all power sources before replacement. Insert XVC768115 3BHB007211R115 into target slot and tighten fixing screws. Confirm back‑plane connector is fully engaged. Complete field‑signal wiring. Restore power supply and perform signal‑acquisition calibration test.
Usage Notes Implement anti‑static protection during handling. Avoid damage to conformal coating. Prohibit hot‑plug under powered condition. Execute signal‑channel calibration after spare‑part replacement.
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