ABB HESG324436P3 Pulse Transformer Board

Feature & Principle

It is ABB UNS series excitation system pulse transformer board. It isolates and transmits trigger pulse signals from the control unit to the thyristor rectifier bridge. It realizes electrical isolation between control circuit and power circuit, suppresses interference and ensures stable firing of thyristors. Conformal coated PCB for harsh industrial environment. This model is discontinued and widely used for spare replacement of old generator excitation cabinets in power plants.

Specifications

Model: HESG324436P3 Brand: ABB Alternative code: UNS0881A-P Function: Pulse signal isolation and transmission Application system: Generator excitation control system Mounting: Rack plug-in PCB coating: Conformal coating Operating temperature: -20 ~ +70℃ Protection class: IP20 Application: Power plant generator excitation cabinet, thyristor rectifier trigger control Certification: CE

Components & Diagnostics

Pulse transformer array, isolation circuit, signal conditioning circuit, backplane connector, status LED indicator. Common faults: transformer damage, pulse signal loss, circuit board burnout, poor backplane contact.

Product Brief

HESG324436P3 pulse transformer board, ABB UNS excitation system control spare widely used for power plant excitation cabinet overhaul and replacement.