📘 ABB PXAH401 (3BSE017235R1) — Excitation Unit Datasheet
The ABB PXAH401 (3BSE017235R1) is a high-performance excitation unit designed for generator and turbine applications requiring precise voltage regulation and robust operational reliability. Built for demanding industrial environments, this unit delivers consistent excitation control, ensuring optimal generator performance, system stability, and protection against overvoltage, undervoltage, and other transient conditions. Its modular design allows seamless integration with ABB excitation systems and modern automation platforms.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Product Code | PXAH401 |
| Spare Part Number | 3BSE017235R1 |
| Type | Excitation Unit |
| Rated Output Voltage | 100–250 V DC |
| Rated Output Current | 5–50 A (configurable per system) |
| Control Method | Automatic Voltage Regulation (AVR) |
| Input Supply | 110–240 V AC, 50/60 Hz |
| Response Time | ≤ 10 ms typical |
| Feedback Input | Generator voltage and current signals |
| Protection Features | Overvoltage, undervoltage, short-circuit, overcurrent, thermal |
| Communication Interface | Modbus RTU, Profibus, or ABB proprietary interface |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5–95% non-condensing |
| Cooling Method | Natural convection / optional forced cooling |
| Enclosure Material | Industrial-grade steel |
| Ingress Protection | IP20 standard |
| Mounting Type | Panel or cabinet mounting |
| Dimensions (W × H × D) | 320 × 280 × 180 mm |
| Weight | ~12 kg |
| Certifications | CE, UL, RoHS |
| Country of Origin | Switzerland |
⚡ Key Features
- Precision Voltage Control: Maintains generator output voltage within tight tolerance for reliable operation.
- High Reliability: Industrial-grade construction designed for harsh operational environments.
- Rapid Response: Fast voltage regulation with minimal transient effects during load changes.
- Multiple Protection Mechanisms: Safeguards the generator and excitation system against electrical faults.
- Flexible Communication: Supports integration into modern automation and monitoring systems.
- Compact and Modular Design: Easy installation and replacement within existing generator cabinets.
🛠️ Installation Requirements
- Install the unit on a flat, vibration-free surface inside a ventilated cabinet.
- Maintain minimum 50 mm clearance around the enclosure for proper airflow.
- Ensure secure grounding according to industrial electrical standards.
- Use appropriate high-quality connectors and cables for input/output connections.
- Verify that the supply voltage matches the unit’s nominal rating before powering on.
🔧 Maintenance Guidelines
- Conduct routine inspections for dust, loose connectors, and signs of corrosion.
- Clean the exterior with dry compressed air; avoid chemical solvents.
- Check LED indicators and system diagnostics regularly to ensure proper function.
- Replace any worn connectors or cables promptly to maintain system reliability.
- ABB recommends annual preventive checks including feedback signal verification and thermal inspection.
🌐 Additional Resources
📋 Recommended Similar Products
| Model | Description | Rated Current | Application |
|---|---|---|---|
| PXAH402 (3BSE017236R1) | Excitation unit with enhanced transient response | 5–60 A | Industrial generators |
| PXAH403 (3BSE017237R1) | Compact AVR module for medium generators | 5–40 A | Renewable energy generators |
| PXAH404 (3BSE017238R1) | High-precision excitation unit with analog/digital control | 10–50 A | Power plant turbines |
| PXAH405 (3BSE017239R1) | Modular excitation unit with extended temperature range | 5–55 A | Marine generators |
| PXAH410 (3BSE017240R1) | Advanced excitation unit for heavy-duty industrial generators | 15–60 A | Oil & gas / industrial power systems |
✅ The ABB PXAH401 combines robust construction, precise voltage regulation, and advanced protection features to deliver a reliable excitation solution for industrial and power generation applications. Its modular design ensures easy integration, maintenance, and long-term operational stability.
