ABB UFC760BE1142 3BHE004573R1142 INU Interface Board

Technical Specifications

Model: UFC760BE1142

Part Number: 3BHE004573R1142

Brand: ABB

Product Type: INU power unit interface trigger 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 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: 0.55kg

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 operating status feedback from power unit, realize signal isolation transmission between control layer and power layer, ensure reliable trigger of excitation power loop.

Product Details

The UFC760BE1142 3BHE004573R1142 is INU power unit interface trigger board for ABB UNITROL generator excitation system.

This UFC760BE1142 board acts 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, fault signal of power unit back 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.

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 UFC760BE1142 board replacement.