Description

1TNA920611R0002

1. Product Title

ABB 1TNA920611R0002‑ Excitation System Interface Printed Circuit Board

2. Product Overview

1TNA920611R0002 is a plug‑in interface board for ABB generator static excitation control systems. It handles signal conversion and electrical isolation between excitation regulator CPU unit, thyristor power stacks and field‑side measurement transducers. It transmits set‑point commands to power conversion units and feeds back field‑current, field‑voltage measured values to the main controller. On‑board hardware interlock logic triggers protective actions under abnormal excitation operating conditions. This legacy PCB is high‑value spare for power‑plant synchronous‑generator excitation control cabinets.

3. Technical Specifications

• Brand: ABB
• Model: 1TNA920611R0002
• Warranty: One Year
• Condition: 100% New & Original
• Application: Static generator excitation system interface
• Function: Signal isolation, command transmission, measured‑value feedback, hardware interlock
• Power Supply: Powered via rack backplane
• Operating Temp: ‑25 °C ~ +70 °C
• Mounting: Excitation cabinet rack slot‑mount
• Protection Class: IP20
• 

4. Application Scenarios

• Power‑plant Generator Excitation Cabinet: Interface board spare for ABB static excitation regulator assemblies.
• Hydro‑generator Auxiliary Control System: Replacement signal‑processing PCB for legacy excitation control racks.
• Excitation‑system Retrofit Project: Drop‑in spare for existing 1TNA920611R0002 board installations.