Product Overview

• Part Number: UFC718AE01, matching code HIEE300936R0101
• Brand: ABB
• Applicable System: UNITROL 6000 generator excitation system, AC 800PEC power electronic controller
• Type: Main circuit signal interface board

• FunctionActs as signal bridge between low-voltage control logic and high-power power loop. Converts control fiber signals into drive pulses to trigger thyristor power components. Collects real-time voltage, current feedback signals and sends data back to main controller to form closed-loop excitation regulation. Realizes firing angle distribution, signal conditioning and circuit fault monitoring for excitation rectifier power units.

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Core Features

• Matches fiber optical trigger, fully isolates high voltage and control circuits, strong anti-electromagnetic interference in power plant high-voltage cabinets
• Onboard hardware fault diagnosis; LED indicators display running state, communication loss and channel failure for quick troubleshooting
• PCB with conformal coating, moisture-proof, dust-proof and anti-corrosion for long stable operation
• Special rack card structure, fixed by screws, requires ESD protection during maintenance to avoid chip damage

• Fixed signal definition; cannot be replaced by UFC719/UFC721 other similar boards, only same part number interchangeable

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Technical Specifications

• Power Supply: DC 24V ±10%
• Working Temperature: -40℃ ~ +70℃
• Protection Grade: IP20 (cabinet inner installation only)
• HS Code: 85389091

• Supply: Brand new original, new old stock and fully tested refurbished boards available

• Certification: CE, UL

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Compatibility

• Exclusive supporting equipment: ABB UNITROL 6000 excitation cabinet, AC800PEC power control rack
• Matching accessories: Excitation thyristor power stack, fiber optic cable, excitation main controller
• Applicable scenarios: Thermal power, hydropower generator excitation control cabinet, industrial self-owned power station

• Strict one-to-one replacement; cross-model replacement is forbidden

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Application

• Replacement maintenance for excitation system triggering failure, feedback signal abnormal, excitation unstable alarms
• Overhaul of generator excitation rectifier cabinet control loop
• Aging board upgrade and spare backup for power plant UNITROL6000 long-term operation
• Troubleshooting excitation overvoltage, undervoltage caused by interface board signal loss