GE IS200EAUDH1A High-speed Contactor Drive Sub-Board

Product Description

GE IS200EAUDH1A is a High Speed Contactor Driver Daughter Board for the EX2100E generator excitation system, compatible with Baker Hughes (former GE) EX2100 / EX2100E excitation control cabinets. This daughter board drives high-power contactors in the excitation loop, outputs high-speed switching drive signals for excitation switching and de-excitation contactor fast operation. It integrates drive amplification, loop diagnosis and fault detection. The board plugs into the EX2100E rack backplane slot and cooperates with the main excitation control board to execute generator excitation start/stop and de-excitation protection logic. OEM production has been discontinued; it is available only as spare parts for legacy thermal power and combined-cycle power plant excitation systems.

Technical Parameters

• Model: IS200EAUDH1A
• Type: High Speed Contactor Driver Daughter Board
• Compatible System: GE / Baker Hughes EX2100, EX2100E Generator Excitation Control System
• Functions: Excitation contactor driving, de-excitation loop control, drive circuit fault diagnosis
• Mounting: Rack daughter board, pluggable into EX2100E backplane slot
• Communication: Backplane bus communication with excitation main control board
• Power Supply: 24VDC from rack backplane
• Features: High-speed drive output, circuit self-diagnosis, overcurrent protection
• Operating Temperature: -20℃ ~ +70℃
• Product Status: OEM EOL, industrial spare part

Product Applications

1. Drive control of main excitation contactors and de-excitation contactors for EX2100E excitation systems of steam and gas turbine generator sets in thermal power and combined-cycle power plants.
2. Generator field flashing, excitation switching and fast de-excitation protection loop; rapid excitation power cut upon faults.
3. Drive signal amplification inside excitation cabinets, contactor drive loop status monitoring and fault reporting to main excitation controller.
4. Maintenance, spare parts replacement and retrofitting of legacy EX2100 / EX2100E excitation equipment.
5. Excitation protection interlock for large synchronous generators, improving de-excitation response speed under unit fault conditions.

Series Models

• IS200EAUDH1A: High speed contactor driver daughter board, standard for EX2100E
• IS200EAUXH1A: EX2100E auxiliary function daughter board
• IS200ERDDH1A: Excitation regulator dynamics discharge board (de-excitation control)
• IS200ESELH1A: Exciter selector board