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The ABB UAD155A0111 (3BHE029110R0111) UA D155 is a critical module within the AC 800PEC (Programmable Electronic Controller) system, specifically designed for excitation control in power generation applications.
Key Details:
Part Number: UAD155A0111 (alternative: 3BHE029110R0111)
System: AC 800PEC (ABB's high-performance control platform)
Function: Excitation control for synchronous generators (voltage regulation, field current control, power system stabilization).
Integration & Compatibility
Works within the AC 800PEC controller framework.
Interfaces with ABB’s MACH™ or SYS600 excitation systems.
Communicates via IEC 61850, Modbus, or Profibus
ABB 3BHE029110R0111 | UA D155 A0111
Role in Excitation Control System
This module is typically part of a brushless or static excitation system, responsible for:
✔ Automatic Voltage Regulation (AVR) – Maintains generator terminal voltage.
✔ Field Current Control – Adjusts rotor current for stable power output.
✔ Power System Stabilizer (PSS) – Damps oscillations in the grid.
✔ Protection Functions – Over-excitation, under-excitation, and field short-circuit protection.
Applications
Hydroelectric & Thermal Power Plants
Industrial Generators
Grid Stability & Black Start Systems
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