ABB SPAU341C3-AA Voltage Regulator

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1. Product Overview

ABB SPAU341C3-AA Voltage Regulator is a high-performance automatic voltage regulator (AVR) designed to stabilize the output voltage of generators and distribution systems. It continuously monitors generator output voltage and load variations, adjusting the excitation current to maintain voltage stability and improve power quality. The SPAU341C3-AA features fast response, high reliability, and strong interference immunity, suitable for industrial, commercial, and utility power systems.

2. Technical Specifications

• Model: SPAU341C3-AA

• Product Type: Automatic Voltage Regulator (AVR)

• Input Voltage Range: AC 110–240 V or DC 24 V (depending on version)

• Output Voltage Range: 0–100% rated excitation voltage

• Regulation Accuracy: ±0.5%

• Response Time: ≤ 50 ms

• Excitation Current Capacity: Selectable according to generator rating

• Operating Temperature: -20 ℃ to +70 ℃

• Degree of Protection: IP20

• Mounting Method: Panel or DIN rail mounting

• Standards Compliance: IEC / EN 61000 series EMC standards

3. Advantages and Features

1. High-Precision Voltage Regulation
   Maintains stable output voltage with ±0.5% accuracy, ensuring power quality.

2. Fast Response
   Response time ≤50 ms, capable of handling rapid load changes.

3. High Reliability
   Designed for industrial environments; resistant to high temperature and vibration for long-term stable operation.

4. Intelligent Control Functions
   Supports manual and automatic regulation, with overvoltage and undervoltage protection.

5. Versatile Compatibility
   Suitable for various synchronous generators and distribution systems.

6. Easy Installation
   Compact design allows panel or DIN rail mounting for convenient system integration.

4. Typical Applications

• Generator voltage control in power plants

• Industrial and commercial distribution systems

• Hydroelectric, wind, and thermal power generators

• Uninterruptible power supply (UPS) systems

• Voltage regulation in automation control systems

• OEM generator control equipment

5. Installation and Usage Notes

1. Verify input voltage matches generator or system requirements before installation.

2. Wiring should be performed by qualified personnel to ensure safety and reliability.

3. Avoid installation in high-humidity, dusty, or corrosive environments.

4. Disconnect power before commissioning or maintenance.

5. Periodically inspect connections, excitation circuits, and regulation performance to ensure proper operation.