ABB UFC760BE43 3BHE004573R0043 INU Interface Board

Technical Specifications

Model: UFC760BE43

Part Number: 3BHE004573R0043

Brand: ABB

Product Type: INU power unit trigger interface board

Matching System: ABB UNITROL series generator excitation system

Power Supply: Cabinet backplane DC power supply

Signal Interface: Thyristor trigger pulse output, power unit status feedback signal input

Communication Interface: Internal excitation system bus

Isolation: Galvanic isolation between control circuit and power circuit

Installation Method: Cabinet plug‑in card installation

Operating Temperature: 0℃ ~ +60℃, non‑condensing

Protection Class: IP20

Weight: 0.46kg

Dimension: 330mm × 180mm × 32mm

Compatible System: Thermal power and hydropower synchronous generator excitation cabinet

Core Function: Receive trigger commands from main control board, generate and distribute thyristor firing pulses, collect running status and fault feedback from power unit, realize signal isolation transmission between control layer and power layer, ensure reliable triggering of excitation power loop.

Product Details

The UFC760BE43 3BHE004573R0043 is INU power unit trigger interface board for ABB UNITROL generator excitation system.

This UFC760BE43 board serves as signal bridge between main control processor and thyristor power unit.

It receives control trigger instructions sent by main control board, generates accurate firing pulses to drive thyristor power components.

It feeds back real‑time working state and fault signal of power unit to main control board for logic judgment and protection action.

Adopts galvanic isolation design to suppress high‑voltage interference generated by power loop, improve system anti‑interference performance.

On‑board monitoring circuit can detect pulse loss and channel abnormality, output corresponding fault alarm information.

Conformal coated circuit board adapts to harsh industrial environment and enhances moisture‑proof and dust‑proof capability.

Standard plug‑in hardware structure supports convenient on‑site maintenance and replacement.

It is widely used in overhaul and renovation projects of thermal power plants and hydropower station generator excitation systems.

It is important spare hardware for excitation cabinet maintenance, trigger pulse loop debugging and defective UFC760BE43 board replacement.