Description

ABB PXAH401 3BSE017235R1 Exciter Control Board

Technical Specifications

• Product Model: PXAH401, Order No:3BSE017235R1
• Brand: ABB
• Warranty: One Year
• Input Power: Internal excitation‑system rack back‑plane supply
• Operating Temperature: 0 °C ~ +60 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: High‑speed excitation‑regulation closed‑loop cycle
• Protection Class: IP20 rack‑mount printed‑circuit‑board assembly
• Accuracy Class: Generator‑excitation‑system control‑processor grade
• Function: Main control board for generator static‑excitation system; performs excitation‑current regulation, voltage‑loop control, limit‑protection and communication to plant DCS
• Interfaces: Analog measurement inputs, field‑bus interface, back‑plane system bus
• System Compatibility: ABB PX series static‑excitation control‑system hardware
• Diagnostics: On‑board LED status indicators, fault‑event log storage
• Humidity: 5‑95 % RH non‑condensing
• Weight: 0.47 kg
• Dimensions: Standard excitation‑system rack‑card footprint
• 

Product Overview

PXAH401 (3BSE017235R1) is main processor‑control board for ABB static generator‑excitation system. It implements closed‑loop generator‑voltage and excitation‑current regulation, over‑excitation / under‑excitation limiting and protection functions, and communicates excitation‑system status, alarms and set‑points to plant DCS. Critical spare hardware for thermal‑power‑plant and hydro‑power‑unit excitation‑control cabinets. Surplus and refurbished tested spare control‑board for power‑plant‑excitation‑system maintenance‑projects.

Application Notes

‑ Observe strict ESD anti‑static handling rules during PCB replacement. ‑ Verify parameter‑setting and protection‑threshold values after board swap‑out. ‑ Typical deployment: generator‑static‑excitation‑system main‑control‑board spare‑part stocking.