Home > Electrical & Electronics > Electrical Control System > ABB UNS4881b,V4 3BHE009949R0004 Unitrol 5000 AVR Unit

ABB UNS4881b,V4 3BHE009949R0004 Unitrol 5000 AVR Unit

Guizhou Yuanmiao Automation Equipment Co., Ltd.
1Yr
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ABB UNS4881b,V4 3BHE009949R0004 Unitrol 5000 AVR Unit photo-1
Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Global universal model
Condition:
Other, Global universal model
Task:
Other, Global universal model
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Port of Shipment:
China
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Delivery time depends on order quantity.

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Material Other, Global universal model
Condition Other, Global universal model
Task Other, Global universal model
Mathematical Model Other, Global universal model
Signal Other, Global universal model
Customized Non-Customized
Structure Other, Global universal model
Operating Temperature -40°C to +70°C
Output Voltage Range 80 - 300 VDC
Input Voltage Range 85 - 300 VAC, 50/60 Hz
Overview
The ABB UNS4881b,V4 3BHE009949R0004 is a key industrial automation device with superior performance, belonging to ABB's Unitrol 5000 AVR unit series. With its outstanding performance in automation control, power regulation, and other fields, it has become a core component to ensure stable system operation and improve production efficiency in numerous industrial scenarios. Specifically designed to address complex and harsh industrial environments, this product deeply integrates cutting-edge technology with high-reliability manufacturing processes, providing comprehensive and high-precision control and monitoring solutions for industrial production.
Functional FeaturesHigh-Precision Control
Adopting advanced control algorithms, it achieves extremely high precision in regulating the generator's output voltage, accurately maintaining the grid voltage within the set range. For example, in power systems, it can limit voltage fluctuations to a minimal range, ensuring stable operation of various electrical equipment and reducing the risk of equipment failures and production interruptions caused by unstable voltage.
Fast Response Characteristics
It responds rapidly to voltage fluctuations, capable of reacting and adjusting within an extremely short time once voltage anomalies are detected. In situations such as sudden changes in grid load, it can quickly stabilize the voltage, effectively enhancing power system stability, avoiding chain reactions caused by voltage fluctuations, and ensuring the continuity of industrial production.
High-Reliability Design
Assembled with industrial-grade high-quality components, the overall structure has undergone strict testing and optimization, featuring excellent anti-interference capabilities. Even in harsh environments with high temperature, high humidity, or strong electromagnetic interference, it can operate stably for a long time, significantly reducing equipment maintenance frequency and failure probability, and providing reliable support for industrial production.
Diverse Protection Functions
Integrating multiple protection mechanisms such as overvoltage, undervoltage, and overcurrent protection. When abnormal conditions occur in the system, it can quickly activate the protection function, cut off the abnormal circuit, prevent equipment damage caused by overload, overvoltage, and other issues, extend equipment service life, and ensure safe system operation.
Flexible Parameter Configuration
Supporting flexible parameter settings through professional software, it allows customized configuration of equipment operation parameters according to different industrial application scenarios and system requirements. Whether for small industrial production lines or large complex industrial systems, optimal adaptation can be achieved through parameter adjustment, improving the flexibility and versatility of equipment applications.

UNS4881b,V4 3BHE009949R0004

Technical Parameters

  • Input Voltage Range: 85 - 300 VAC, 50/60 Hz, adapting to different power access environments and meeting various industrial on-site power supply requirements.

  • Output Voltage Range: 80 - 300 VDC, providing stable DC voltage output to support reliable power supply for backend equipment.

  • Output Current: Continuous output current up to 15 A, peak current 20 A, meeting power supply needs under different load conditions.

  • Communication Interface: Equipped with RS485 interface, supporting Modbus RTU protocol, facilitating data communication and interaction with other devices or control systems to achieve remote monitoring and centralized control.

  • Control Mode: Controlled based on digital technology and microprocessors, with strong data processing and logical operation capabilities to ensure control precision and efficiency.

  • Operating Temperature Range: -40°C to +70°C, enabling normal operation within a wide temperature range and adapting to various industrial environment temperature conditions.

  • Protection Level: Meeting certain protection standards (specific level not mentioned, can be supplemented or explained according to actual situations), with certain dustproof and waterproof capabilities to enhance applicability in harsh environments.

Working Principle
This device is mainly used for Automatic Voltage Regulation (AVR). During operation, it real-time detects the generator's output voltage, compares and analyzes the detected value with the internally preset standard voltage value. Once a deviation between the output voltage and the set value is found, the internal control circuit of the device quickly calculates the magnitude and direction of the excitation current that needs to be adjusted, and sends corresponding control signals to the generator's excitation system. The excitation system adjusts the generator's excitation current according to the received signals, thereby changing the generator's magnetic field strength, ultimately achieving precise regulation of the generator's output voltage to stabilize it within the preset range and ensure the stable operation of the power system. Throughout the regulation process, the device continuously monitors parameters such as system current and temperature, and immediately activates the protection mechanism in case of abnormal conditions to ensure equipment and system safety.
Application FieldsPower System
Playing a key role in power plants, substations, and other scenarios, it is used for automatic voltage regulation of the generator excitation system, stabilizing grid voltage, and ensuring the stability and reliability of power supply. It is one of the core devices to maintain the normal operation of the power system.
Industrial Automation
Suitable for industrial automation fields such as robot control, automated production equipment, and machine tools. It can precisely control and monitor various parameters during equipment operation, such as controlling motor speed and adjusting equipment operating power, to ensure the efficient and stable operation of industrial automation production lines and improve production efficiency and product quality.
Process Control
Widely applied to process control links in industries such as chemical, food & beverage, and pharmaceutical. It can precisely control process parameters such as temperature, humidity, flow, and pressure. For example, in chemical reaction processes, by precisely controlling the temperature and pressure in the reactor, it ensures that chemical reactions proceed under set conditions, improving product quality and production safety.
Other Industrial Scenarios
Used for operation control and monitoring of various equipment in industries such as petroleum and metallurgy, such as remote monitoring of petroleum extraction equipment and temperature/pressure control of metallurgical furnaces, helping intelligent and automated management of industrial production processes and improving the overall operation level of industrial enterprises.
Product Tags: UNS4881b,V4 , 3BHE009949R0004 , 5SXE08-0167

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Guizhou Yuanmiao Automation Equipment Co., Ltd.
1Yr
Business Type
Trading Company
Year Established
2014
Factory Size
1,000-3,000 square meters
Product Certifications
SA8000
Contact Supplier Request Quote Chat Now

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