Description
ABB PU180/63E 3BHB00916230001
1. Basic Information
ABB PU180/63E (Part No. 3BHB00916230001) is a dedicated charging isolation transformer for ABB UNITROL series generator excitation systems. It provides isolated and stabilized power supply for excitation rectifier units, excitation starting circuits and control loops, realizing voltage conversion and electrical isolation between grid power and excitation power loop.
With a rated capacity of 5kVA, full-copper winding and low-loss core structure, the transformer features low temperature rise, low noise and stable insulation performance. It is widely used in thermal power, hydropower and cogeneration units for new system matching, aging equipment replacement and excitation cabinet technical renovation.
2. Technical Specifications
2.1 Electrical Parameters
- Model: PU180/63E
- Part Number: 3BHB00916230001
- Type: Excitation System Dedicated Charging Isolation Transformer
- Rated Capacity: 5 kVA
- Rated Input Voltage: 180V
- Rated Output Current: 63A
- Rated Frequency: 50Hz / 60Hz
- Electrical Feature: Precise transformation ratio, stable output and strong load capacity
2.2 Structural & Protection Parameters
- Winding Material: Full copper winding with low loss and anti-aging performance
- Core Material: Low-loss silicon steel sheet for low no-load loss and low temperature rise
- Protection Level: Standard cabinet protection for indoor excitation cabinet installation
- Installation Method: Screw fixed installation, matching ABB original cabinet hole position
- Weight: Approx. 32kg
2.3 Environmental Parameters
- Operating Temperature: 0℃～+55℃
- Storage Temperature: -40℃～+85℃
- Humidity Range: 5%～95%RH (Non-condensing)
- Vibration Resistance: Reinforced structure for long-term unit vibration scenarios
- Environmental Adaptability: Moisture-proof, dust-proof and anti-corrosion insulation treatment
3. Features
- Precise Voltage Matching: Customized for UNITROL excitation systems, perfectly matching the power demand of excitation starting, rectification and control loops to ensure stable full-condition operation.
- High-strength Electrical Isolation: Completely isolates grid surge, ground potential difference and clutter interference, protecting precision excitation controllers and SCR power units.
- Strong Load & Overload Capacity: 5kVA full rated capacity supports full-load operation and short-term field forcing, meeting unit grid connection and transient stability requirements.
- Low Loss & Long-term Stability: Low-loss core and full-copper design reduce heat generation and aging rate, adapting to 7×24h uninterrupted unit operation.
- Original System Compatibility: Fully compatible with ABB UNITROL series excitation systems, no cabinet or wiring modification required for in-situ replacement.
- Low Noise & Vibration Resistance: Overall impregnation and curing process prevents winding loosening and parameter drift under long-term vibration.
4. Working Principle
- Grid Voltage Input: Industrial AC voltage is connected to the primary winding to complete pre-energy input.
- Electromagnetic Transformation & Isolation: Converts input voltage to excitation-rated working voltage through precise turns ratio, and realizes electrical isolation between primary and secondary sides.
- Stable Power Output: The secondary side outputs stable voltage and sufficient current to supply power for excitation rectifier, starting loop and control loop.
- Dynamic Condition Adaptation: Dynamically matches power demand under no-load, load, grid-connected and field-forcing conditions to ensure continuous and adjustable excitation output.
- Anti-interference Protection: Absorbs grid voltage fluctuation and spike interference to avoid impact on backend precision excitation equipment.
5. Applications
5.1 ABB UNITROL Excitation System Supporting
Serves as the original supporting charging transformer for UNITROL 1000/2000/3000 series excitation systems, providing dedicated isolated power for large and medium-sized generator sets.
5.2 Aging Excitation Equipment Replacement
Replaces aging transformers with decreased insulation, excessive temperature rise and unstable output, quickly restoring excitation system power supply stability and eliminating excitation failure risks.
5.3 Excitation System Maintenance & Renovation
Used for annual maintenance, insulation rectification and power supply loop optimization of power plant excitation systems to improve operational reliability and compliance.
5.4 Unit Capacity Expansion & System Upgrade
Meets the power demand of upgraded excitation systems, eliminating power bottlenecks and ensuring stable full-load and field-forcing operation after unit capacity expansion.
