Description
ABB KUC321AE
Technical Specifications:
- Applicable Systems: ABB UNITROL series and custom excitation systems.
- Functions: Pulse amplification, logic control, power conversion.
Functional Features:
- Precise Firing: Provides high-precision thyristor firing pulses for smooth excitation current regulation.
- High Interference Immunity: Designed for strong electromagnetic environments to resist electrical noise at the generator end.
- Fast Response: Millisecond-level logic judgment ensures safe field extinction during faults.
Application Scenarios:
Automatic Voltage Regulators (AVR) and excitation control cabinets for hydro, thermal, and gas turbine generators.
Performance Parameters:
- Pulse Symmetry: Extremely high, preventing excitation transformer DC bias.
- Isolation Withstand: High-grade electrical isolation between control and power circuits.
Material Composition:
Utilizes specialized high-voltage, high-temperature electronic components. PCBs receive thickened insulating varnish and conformal coating treatment.
Structural Features:
Features dedicated plug-in connectors and mounting brackets, with debugging interfaces and status indicator lights on the front panel.
Working Principle:
Receives control signals from the AVR regulator, isolates and amplifies them via optocouplers, and drives the thyristors (SCRs) in the excitation system to precisely control generator rotor current.
Installation Requirements:
Must be strictly aligned and locked into the slot with mounting screws. Confirm absolute correctness of phase sequence and polarity when connecting firing cables.
Usage Precautions:
This board involves high voltage and strong current. Ensure the excitation system is completely powered off and discharged before handling. Never disconnect firing pulse cables while energized to prevent thyristor damage.
