ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator
ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator
0.0
Points
Brand:ABB PLC Item No.:UNS 0121 A-Z,V1 Product Origin:Sweden (SE) Product Dimensions:302 x 170 x 85 mm Product Weight:2.8 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator Module is a precision control component developed for excitation system applications where voltage stability and reliable generator operation are critical.
As part of ABB excitation technology, this AVR module manages generator excitation levels by continuously monitoring electrical feedback and adjusting the excitation output. This enables generators to maintain consistent voltage performance during load changes, startup conditions, and dynamic power system events.
Designed for industrial power applications, the module combines advanced control capability with ABB’s proven automation expertise. It is widely selected for power plant upgrades, equipment refurbishment, and replacement projects requiring dependable excitation control performance.
The compact hardware design allows efficient installation within control cabinets while providing the reliability required for continuous industrial operation.
Technical Specifications
Parameter
Details
Manufacturer
ABB
Product Model
UNS 0121 A-Z,V1
Ordering Number
3BHE035301R0004
Product Type
Automatic Voltage Regulator Module
Application
Generator Excitation Control
Function
Voltage Regulation and Excitation Management
Control System Type
Digital AVR Control
Compatible Equipment
Synchronous Generator Excitation Systems
Dimensions
302 x 170 x 85 mm
Weight
2.80 kg (6.17 lb)
Installation Type
Industrial Control Cabinet Mounting
Operating Environment
Industrial Power Generation Applications
Recommended Related Models
Model
Product Type
Description
ABB 3BHE035301R1002
UNITROL 1010 Control Unit
Digital automatic voltage regulator control unit for excitation applications
ABB UNS 0121A-Z,V1
AVR Control Unit
UNITROL 1010 series excitation controller hardware
ABB 3BHE022291R0101
Excitation Controller Module
Industrial excitation control module for generator systems
ABB UNITROL 1020
Automatic Voltage Regulator
Advanced AVR solution for larger synchronous machines
Popular Related Models
Model
Category
ABB UNITROL 1010
Automatic Voltage Regulator
ABB UNITROL 1020
Excitation Control System
ABB 3BHE022291R0101
Excitation Controller Module
ABB UNS 0887A-P,V1
Control Module
ABB UNS 2881B-P,V1
Industrial Control Module
Applications
The ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator Module is designed for advanced excitation control applications in synchronous generators and industrial power systems. It provides accurate voltage regulation and stable excitation management to maintain reliable generator performance under changing electrical loads.
This AVR module is commonly used in:
Application Area
Description
Power Generation Plants
Maintains generator terminal voltage stability and improves excitation control performance
Industrial Generator Systems
Supports reliable operation of synchronous motors and generators
Hydropower Facilities
Provides precise excitation adjustment for stable power output
Marine Power Systems
Helps maintain electrical stability in onboard generation equipment
Utility Power Equipment
Enhances voltage regulation and reactive power management
The module is suitable for modernization projects, replacement applications, and maintenance of ABB excitation systems where dependable voltage control and long-term operational stability are required.
Advantages
Advantage
Description
High Voltage Regulation Accuracy
Provides precise control of generator excitation voltage for stable electrical output
Reliable Excitation Management
Supports continuous generator operation under different load conditions
Industrial-Grade Design
Built for demanding environments requiring high reliability and durability
Fast Dynamic Response
Quickly adjusts excitation output during voltage fluctuations
Easy System Integration
Designed for compatibility with ABB excitation control platforms
Reduced Maintenance Requirements
Improves system availability through stable electronic regulation performance
The ABB UNS 0121 A-Z,V1 3BHE035301R0004 helps operators achieve improved generator efficiency, reduced voltage variation, and enhanced power system reliability.
Technical FAQs
Q1: What is the main function of the ABB UNS 0121 A-Z,V1 3BHE035301R0004 Automatic Voltage Regulator Module?
A: The module regulates generator excitation voltage by automatically adjusting the excitation output, helping maintain stable terminal voltage and reliable generator operation.
Q2: Which applications are suitable for this ABB AVR module?
A: It is mainly used in synchronous generator excitation systems, industrial power plants, hydropower facilities, marine power systems, and generator modernization projects.
Q3: How does the AVR module improve generator voltage stability?
A: The AVR continuously monitors voltage feedback signals and adjusts excitation current according to load changes, reducing voltage fluctuations during operation.
Q4: What should be checked before installing this automatic voltage regulator?
A: Before installation, technicians should confirm model compatibility, wiring connections, excitation system requirements, grounding conditions, and parameter settings.
Q5: What are common causes of AVR module malfunction?
A: Common causes include unstable power supply, incorrect wiring, excessive environmental temperature, electrical interference, and aging electronic components.
Q6: Can the ABB UNS 0121 A-Z,V1 module be used as a replacement component?
A: Yes, it can be used for compatible ABB excitation system replacement and maintenance applications after verifying system configuration and technical requirements.
Q7: How can engineers troubleshoot unstable generator voltage output?
A: Engineers should check voltage sensing circuits, excitation feedback signals, control parameters, communication status, and external electrical connections.
Q8: Does this AVR module support reactive power control functions?
A: Depending on the excitation system configuration, AVR control functions can support reactive power adjustment and power factor control.
Q9: What maintenance practices are recommended for this module?
A: Regular inspection of connections, cabinet conditions, cooling performance, and operating parameters helps maintain long-term reliability.
Q10: Is parameter backup necessary before replacing the AVR module?
A: Yes, saving existing parameters and configuration data helps ensure correct commissioning and reduces downtime after replacement.
