ABB 3BHE014557R0003 UN1000B-Z, V3 Microprocessor Based Automatic Voltage Regulator

Description

The ABB 3BHE014557R0003 UN1000B-Z, V3 is a controller used within the ABB UNITROL® 1000 automatic voltage regulator platform for generator excitation systems. As part of the UNITROL 1000 family, it performs the control functions required to regulate generator excitation, maintaining stable terminal voltage while supporting reliable operation of synchronous generators under varying load conditions. The module forms an integral part of the excitation system and is designed for applications requiring dependable voltage regulation and long-term operational stability. The UNITROL 1000 platform provides digital excitation control with integrated voltage regulation, reactive power control, and power factor control to meet the operating requirements of industrial and marine power generation systems. The UN1000B-Z, V3 module works together with the remaining excitation system components to process control signals, coordinate excitation functions, and maintain generator performance during normal operating conditions. Its modular architecture allows the controller to be incorporated into standard UNITROL 1000 excitation systems while supporting straightforward maintenance and replacement procedures. 

Parameter

Model: 3BHE014557R0003 UN1000B-Z, V3 Microprocessor Based Automatic Voltage Regulator
Input Voltage Range: 0 to 300 VDC / AC (Main power/measurement feed)
Continuous Output Current: 15 A DC (Nominal excitation current output)
Peak Ceiling Current (10s): 14 A DC to 30 A DC (Depending on source configuration ceiling)
Internal Aux Source Out: 24 VDC, Max 300 mA (For powering local loops)
Line Voltage Measurement: Max 150 V / Burden 0.2 VA
Operating Temperature: -20°C to +55°C (Standard operating environment)
Storage Temperature: -40°C to +70°C

Frequently asked questions

What is the ABB 3BHE014557R0003 UN1000B-Z, V3?
The ABB 3BHE014557R0003 (UN1000B-Z, V3) is a controller used in the UNITROL® 1000 Automatic Voltage Regulator (AVR) platform. It is designed to control the excitation of synchronous generators, helping maintain stable generator terminal voltage and reliable excitation system performance.

Which applications use the ABB 3BHE014557R0003?
The module is used in UNITROL® 1000 excitation systems for synchronous generators installed in industrial power plants, diesel and gas generator sets, small hydropower stations, marine electrical systems, and captive power facilities.

What industries commonly use the ABB 3BHE014557R0003?
It is commonly applied in power generation, marine power systems, industrial cogeneration plants, renewable energy facilities, and other installations using synchronous generators with ABB UNITROL® excitation systems.

Application areas:
Thermal and Hydro Power Stations: Serves as the localized digital excitation loop controller for auxiliary or main turbine-driven generator sets.
Power Factor Correction: Operates industrial synchronous motors in over-excited modes to act as synchronous condensers, effectively correcting the poor power factor caused by massive neighboring induction motors.
Data Centers & Hospitals: Integrated into large-scale backup diesel generator units to ensure instantaneous, stable, and clean voltage regulation during a grid blackout.
Reactive Power (VAR) Compensation: Automatically adjusts the power factor to optimize efficiency, maximize active power output, and enhance grid stability.

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