Parameters
The exact operational capabilities of this module are determined by the installed configuration and specific product revision within the associated UNITROL platform.
Core Advantages
Seamless UNITROL System Integration
The UN 0800A-P Module is purpose-built for ABB’s UNITROL excitation systems, enabling straightforward integration into existing system architectures. Its classification as a function board within the HIER part numbering segment confirms alignment with documented system requirements.
Synchronization and Signal Handling
Associated with the Synchrotact sub-series, this module is designed for synchronization-related signal processing or synchronization interface functions. It serves as a dedicated functional component within the UNITROL chassis, separate from the main AVR control processing level.
Proven UNITROL Platform Reliability
As part of the UNITROL product family—ABB‘s established excitation control platform—this module benefits from extensive field-proven experience in generator excitation and synchronization applications.
Compact and Maintenance-Oriented Design
With a slim PCB form factor of 2.54 cm depth and a lightweight 0.18 kg design, the module accommodates efficient cabinet space utilization. Its design supports maintenance planning aligned with installed hardware configuration.
Application
The ABB Unitrol UN 0800A-P Module (HIER448194) is deployed across power generation and industrial scenarios where precise synchronization and reliable control are essential:
-
UNITROL Excitation Systems: Integral to synchronous machine control within power plants, supporting voltage regulation and synchronization functions.
-
Synchrotact Sub-Series Applications: Specifically associated with generator synchronization and paralleling functions, where precise signal processing is critical for safe grid connection.
-
Power Generation Facilities: Applications include thermal power plants, hydroelectric stations, and gas turbine installations where excitation control and synchronization are required.
-
System Maintenance and Replacement: Designed for maintaining and restoring UNITROL system functions, with configuration and compatibility confirmed against original equipment documentation and controlled-equipment records.
The exact application parameters are governed by the specific product revision and system configuration in which the module is installed.
FAQ
Q1: What is the difference between the UN 0800A-P designation and HIER448194?
The “UN 0800A-P” refers to the functional module name within the UNITROL product family, while “HIER448194” is the specific part number used for ordering and identification purposes. The full material number is HIER448194R0001.
Q2: Is this module compatible with all UNITROL systems?
Compatibility depends on the specific UNITROL system version and configuration. This module is associated with the UNITROL 1000/800 series and the Synchrotact sub-family. Configuration and compatibility should be confirmed for the exact system in which it will be used, referencing the original wiring and configuration records.
Q3: What are the common part number typos to watch for?
When searching for this module, be aware of common typographical variations: HE1R448194 (numeral 1 instead of letter I), HEIR448I94 (capital I instead of numeral 1), and HEIR448l94 (lowercase L instead of numeral 1).
Q4: What should technicians confirm before installation?
Technicians should confirm the installed revision, connection arrangement, and system assignment rather than assuming interchangeability with a similarly named module. The original wiring and configuration records should guide application, and maintenance planning should reference the installed hardware configuration.
Q5: What is the module’s primary function within the UNITROL system?
For UNITROL system applications, the HIER448194 provides the function of a UN Module/function board within the designated system position. It is associated with synchronization signal processing and is not the main AVR control CPU, which resides in separate modules such as the HIEE300 series.
Recommended Models
The following models are commonly associated with or serve as alternatives within related ABB automation and excitation platforms:
