GE IS200EXAMG1BCB Exciter Attenuator Module for EX2100e

Product Description

The GE IS200EXAMG1BCB is the assembled revision of the IS200EXAMG1B Exciter Attenuation Module, designed for GE Speedtronic Mark VI / Mark VIe and EX2100e generator excitation control systems. It works together with the IS200EGDM exciter ground detector module to implement rotor earth fault monitoring. The board uses a precision resistor network to attenuate high-voltage field signals from the exciter bridge into safe low-level signals for the detection circuit, providing reliable high-voltage isolation and signal conversion for generator rotor insulation monitoring. It is installed inside the exciter cabinet and is a critical spare part for power plant excitation system maintenance and retrofit.

Product Functions

• Attenuate high-voltage excitation field signals to low-voltage measurable signals for ground fault detection
• High electrical isolation between high potential exciter circuits and low voltage monitoring circuits
• Coordinate with IS200EGDM module to detect rotor winding earth faults in synchronous generators
• Stable signal conversion with low temperature drift to avoid false ground fault alarms
• Filter and suppress voltage spikes and EMI interference inside high-voltage excitation cabinets
• Standard rack-mount PCB design, direct replacement for EX2100e excitation rack

Application Scenarios

• EX2100 and EX2100e excitation systems for gas turbine and steam turbine generator units
• Power plant synchronous generator rotor earth fault protection cabinets
• Hydropower generator and large synchronous motor excitation control systems
• Petrochemical, mining and utility independent power generation control systems
• Spare replacement and repair of existing GE Mark VI / Mark VIe excitation racks

FAQ