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ABB DCF803-0035 Field Excitation Module

1. Product Description

The ABB DCF803-0035 is a high-performance field excitation module designed for ABB generators and speed regulation systems. It provides precise and stable DC excitation current to ensure voltage stability and reliable operation of synchronous generators. The DCF803-0035 features a modular design with built-in overcurrent, overvoltage, and short-circuit protection, suitable for various industrial power generation and control applications.

2. Technical Specifications

• Model: DCF803-0035

• Module Type: Field excitation module

• Rated Voltage: DC 24–110 V (depending on application)

• Rated Current: 3–35 A (typical)

• Control Type: Closed-loop excitation control

• Response Time: ≤ 10 ms

• Efficiency: > 95%

• Operating Temperature: –20°C ~ +60°C

• Storage Temperature: –40°C ~ +85°C

• Protection Features: Overcurrent, overvoltage, short-circuit protection

• Mounting: DIN rail or panel mounting

• Dimensions: Approx. 200 × 120 × 80 mm (L × W × H)

3. Features & Advantages

• Precise excitation control ensures synchronous generator voltage stability

• High reliability with industrial-grade design resistant to vibration and high temperatures

• Fast response for dynamic adjustment and load changes

• Multiple protection features enhance operational safety

• Modular design facilitates installation and maintenance

• Strong compatibility with various ABB generators and excitation systems

4. Application Areas

• Synchronous generator excitation control

• Generator automation systems

• Power plants and industrial power generation equipment

• Hydroelectric, thermal, and diesel generator sets

• Power control and voltage regulation applications

5. Precautions / Installation Notes

1. Disconnect power before installation to ensure safety.

2. Operate within rated voltage and current to avoid overload or module damage.

3. Ensure good ventilation around the module to prevent overheating.

4. Avoid moisture, dust, and corrosive gases entering the module.

5. Regularly check module operation and wiring to maintain stable excitation current.

6. Use original or compatible modules when replacing to ensure system compatibility.

The structure and details of the product：

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