Description
1. Product Title
ABB DCF803-0035 – External Field Exciter Module for DC Drive Systems
2. Product Overview
The DCF803-0035 is a professional external field excitation power module under ABB DCF800 series, specially developed as the field power supply core for high-power DC variable speed drives. As a critical excitation control unit, DCF803-0035 converts three-phase AC input into adjustable DC excitation voltage and current for large DC motors, precisely regulating rotor magnetic field strength to realize stable speed regulation, torque control and motor protection. It effectively resolves unstable excitation output, overcurrent burnout and poor dynamic response issues of heavy-duty DC drive equipment. Adopting thyristor phase-shift rectification technology and built-in multi-layer fault detection circuits, the module supports panel wall-mounted installation with natural air cooling, maintaining continuous and steady operation under long-term heavy-load industrial working conditions.
3. Technical Specifications
- Brand: ABB
- Model: DCF803-0035
- Warranty: One Year
- Condition: 100% New & Original
- Input Power: 3-phase 110–500 VAC, 50/60Hz
- Output Parameters: 0–500 VDC adjustable excitation voltage, rated 35A DC output current
- Rectification Mode: Thyristor phase-controlled full-wave rectifier
- Operating Temp: -20°C to +70°C continuous working range
- Cooling Method: Natural convection passive heat dissipation
- Installation: Standard industrial panel mount
- Protection Rating: IP00 open frame structure
- Built-in Protection: Overcurrent, overvoltage, overtemperature and short-circuit lockout protection
- Dimensions/Weight: Approx. 420mm × 280mm × 180mm, net weight 4kg
- Certifications: CE, IEC industrial EMC compliance, RoHS directive
4. Application Scenarios
- Metallurgical Rolling Mill Production Lines: Matched with main DC drive systems of hot rolling and cold rolling mills, providing accurate field excitation for large rolling DC motors to guarantee constant tension and stable rolling speed during metal forming processes.
- Mining Hoist & Conveyor Equipment: Deployed in underground mine winding machines and long-distance heavy-load belt conveyor DC drive cabinets, delivering reliable excitation power for lifting and traction DC motors to ensure safe and stable variable speed operation.
- Paper & Textile Continuous Production Lines: Integrated into high-power DC drive control systems for paper calenders, textile spinning frames and printing machinery, realizing precise torque and speed control to avoid material stretching and product dimensional deviation.
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