Description
ABB UFC760BE41 3BHE004573R0041
Technical Specifications:
- Base Model: UFC760BE41.
- Order Code: 3BHE004573R0041.
- Function: Thyristor firing pulse generation and synchronization.
- Synchronization: Multi-phase AC synchronization inputs.
Functional Features:
- Precise Firing Angle Control: Generates highly accurate thyristor firing pulses for smooth DC output.
- Synchronization: Locks precisely to the AC supply frequency to ensure stable rectification.
- Pulse Amplification: Provides isolated, high-energy gate pulses to reliably trigger large thyristors.
- Fault Detection: Monitors for missing pulses, shorted thyristors, and synchronization loss.
Application Scenarios:
- Static excitation systems for synchronous generators.
- DC motor drives in heavy industry.
- High-power rectifier applications.
Material Composition & Structural Characteristics:
- PCB: Conformal-coated board for protection against harsh electrical environments.
- Isolation: High-voltage isolation between low-voltage control and high-voltage firing circuits.
- Connectors: Robust industrial connectors for gate pulse outputs.
Working Principle:
The module receives a DC voltage or current command from the excitation controller. It synchronizes to the AC supply and calculates the required firing delay angle. It then outputs isolated, amplified gate pulses to the thyristors at the precise moment to achieve the desired DC output voltage.
Installation Requirements:
- Maintain strict clearance and creepage distances between control and gate pulse wiring.
- Use twisted-pair, shielded cables for all gate pulse connections.
- Verify AC synchronization voltage levels and phase sequence before powering up.
Usage Precautions:
- Never measure gate pulse signals with a standard multimeter; use an oscilloscope with isolated probes.
- Ensure the thyristor heatsinks are properly grounded to prevent electrical noise.
