Product Description
SCYC51071 is a pulse amplifier board for ABB Cyclo cycloconverter excitation system, the core trigger board for synchronous generator excitation cabinets. It receives low-level pulse signals from the main control board and amplifies them into high-power trigger pulses to drive thyristors of the power unit. The board integrates signal diagnosis and pulse monitoring. It adopts backplane slot mounting and features strong anti-interference performance. It is a dedicated spare part for maintenance replacement of legacy excitation equipment in power plants.
Specifications
- Model: SCYC51071
- Brand: ABB
- Series: Cyclo Cycloconverter Excitation System
- Function: Pulse amplification, thyristor trigger driving
- Input Signal: Low-level pulse from control board
- Output Signal: High-power trigger pulse for SCR
- Mounting: Slot mounting on backplane
- Power Supply: Internal DC power from rack
- Diagnosis: Pulse loss & channel fault detection, status LED indicators
- Certification: CE
- Note: Hardware revision must be confirmed before ordering. Different revisions are not interchangeable. It shall work with other Cyclo series excitation boards.
Application
It matches ABB Cyclo excitation control system, widely used in thermal power plants, hydropower plants for synchronous generators, synchronous condensers and large synchronous motors. It amplifies trigger pulses to control thyristor rectifier bridges for excitation current regulation, de-excitation and unit interlock protection. It is used for fault replacement of old excitation racks to ensure stable grid-connected operation of generator sets.
Series Models
SCYC51071, SCYC51040, SCYC51060, SCYC51061, SCYC51070, SCYC51080, SCYC51090
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