DTCC901B ABB Thyristor Trigger Board For UNITROL Excitation System

ABB DTCC901B high-precision thyristor trigger pulse board, dedicated spare part

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Product Detail

ABB DTCC901B high-precision thyristor trigger pulse board, dedicated spare part for ABB UNITROL series generator excitation control equipment.

Part No: DTCC901B
Brand: ABB
Category: Thyristor Trigger Pulse BoardDTCC901B is a dedicated trigger circuit board developed for ABB UNITROL generator excitation systems. It receives synchronous control commands and fiber signal instructions sent from the main control board, generates accurate, phase-locked trigger pulses to drive high-power thyristor rectifier bridges. The board realizes electrical isolation between low-voltage control circuit and high-power power loop, ensures stable adjustment of generator excitation current. It monitors pulse output status in real time, feeds back fault signals to the master controller, and is a critical core component to guarantee safe and stable operation of generator excitation cabinets.

Precise phase synchronization trigger technology, stable pulse timing for six-pulse rectifier bridge
High isolation design between control side and power side, strong anti-electromagnetic interference capability
Onboard status LED indicators for pulse output, power supply and fault alarm diagnosis
Optimized waveform shaping circuit, ensure reliable triggering of high-power thyristors
Standard plug-in board layout, convenient disassembly and direct replacement during on-site overhaul
Strict industrial aging and EMC testing, long-term stable operation under power plant complex electromagnetic environment
Support continuous variable load adjustment to adapt to dynamic working conditions of generators

Compatible with ABB UNITROL series generator excitation control systems, matched with UCD224 main control board
Widely used in thermal power, hydropower and distributed power station generator excitation equipment maintenance projects