ABB 3ASC25H209 DATX110 Excitation Control Signal Interface Board, Unitrol Generator Excitation System I/O Module, Power Generation Automation Spare Part

Description

ABB 3ASC25H209 DATX110 Excitation Control Signal Interface Board, Unitrol Generator Excitation System I/O Module, Power Generation Automation Spare Part

Product Application

DATX110 (3ASC25H209) is a dedicated signal interface and control board for ABB Unitrol generator excitation systems. It processes sampling signals, trigger pulse distribution and fault interlock between the main excitation controller and power unit.

• Thermal power plant generator excitation control system
• Hydropower station generator voltage regulation and excitation control
• Combined cycle power unit excitation cabinet signal conditioning
• Power plant retrofit and old excitation system spare replacement
• Industrial large synchronous motor excitation control
• Grid-connected generator set monitoring and protection interlock
• Heavy industry power plant auxiliary generator control

3ASC25H209 DATX110

Specifications

• Part Number: 3ASC25H209, DATX110 (Alias:3BSC980004R784)
• Brand: ABB
• Product Type: Excitation Control Signal Interface Board
• Compatible System: ABB Unitrol Excitation System
• Mounting: Eurocard rack mounting inside excitation cabinet
• Dimension: 233 × 160 × 20 mm
• Weight: Approx. 0.45 kg
• Power supply: Internal auxiliary DC power from excitation cabinet backplane
• Protection Class: IP20, cabinet installation only
• PCB coating: Conformal coating for anti-corrosion and dust resistance
• Altitude: ≤2000m
• Condition: Original new / refurbished spare available
• Compliance: CE, IEC power control EMC standard

Parameters

• Signal function: Analog signal sampling, digital interlock, pulse trigger signal output
• Isolation: High voltage galvanic isolation between power circuit and control logic
• System bus: Internal high-speed backplane bus for real-time data exchange
• Operating temperature: -10°C ~ +70°C
• Storage temperature: -40°C ~ +85°C
• Relative humidity: 5%~95% RH, non-condensing
• Shock & Vibration: Meet IEC 60068 industrial vibration standard
• Built-in protection: Surge, overvoltage and signal channel fault detection
• Status indicator: On-board LED indicators for power, signal and fault status

Key Features

1. Customized board for ABB Unitrol excitation system, stable signal acquisition and pulse output
2. High isolation design to separate high-power excitation circuit and low-voltage control circuit
3. Conformal coated PCB, anti-dust, anti-moisture and anti-corrosion for power station harsh environment
4. Real-time fault detection and interlock protection to safeguard generator excitation unit
5. Standard Eurocard rack structure, convenient pull-out replacement during maintenance
6. Strong EMC anti-interference capability, stable operation under power station electromagnetic noise
7. Strict factory aging and function testing before delivery, reliable spare for power plant excitation cabinet

3ASC25H209 DATX110

ABB Same Series Related Models (≥6)

1. 3ASC25H209 DATX110
2. 3ASC25H208 DATX109
3. 3ASC25H210 DATX111
4. 3ASC25H211 DATX112
5. 3ASC25H212 DATX113
6. 3ASC25H213 DATX114
7. 3ASC25H214 DATX115

Maintenance

• Routine inspection: Check PCB dust, connector tightness and LED status every 6–12 months
• Clean the board surface with dry compressed air; liquid solvent cleaning is strictly prohibited
• ESD protection must be adopted during disassembly, anti-static wristband required
• If signal loss or excitation fault alarm occurs, power off and recheck backplane connectors
• Stop operation immediately if PCB burn marks, corrosion or condensation are found
• We support function testing, refurbishment and spare replacement service for this DATX110 board

Installation

1. Cut off all high voltage and auxiliary power supply of excitation cabinet, confirm zero voltage before operation.
2. Wear anti-static wristband to prevent electrostatic damage to PCB electronic components.
3. Open excitation cabinet door, release the locking mechanism of old DATX110 board.
4. Disconnect backplane connector and signal terminals, pull out the old Eurocard board gently.
5. Align new 3ASC25H209 board with cabinet guide rail, insert smoothly and lock.
6. Reconnect backplane connector and signal terminals, ensure all plugs fully locked.
7. Check no loose wires or foreign objects inside cabinet, close cabinet door.
8. Restore power supply, perform excitation system self-test, verify signal sampling and trigger pulse.
9. Conduct no-load commissioning, then run generator excitation test.