IS200EXHSG1A - EXHS Exciter High Speed Contactor Driver Board | GE EX2100 | B7B

IS200EXHSG1A is a General Electric EXHS Exciter High Speed Contactor Driver Board for GE EX2100 excitation control systems. In the EX2100 protection scheme, the EXHS board supports field flashing and protection functions, providing pilot relay outputs, contact inputs, and signal conditioning for the 41, 53A, and 53B contactor circuits wetted by 70 V dc, cabled to EMIO through the EBKP backplane.

The GEH-6632G EX2100 user guide describes the EXHS as supporting pilot relays for the 41 close relay, 53A/53B flashing contactors, 41T trip relay, and KDEP de-excitation relay, with 70 V dc contact wetting supplied from the M1/M2 power supplies in a redundant configuration; the G1 revision is listed for redundant control contactor mode, using the 41 close relay but not the 41T trip relay. For maintenance, repair, and spare-part planning, IS200EXHSG1A is an important replacement protection board when supporting EX2100 excitation control cabinets, redundant or simplex control architectures, and turbine-generator excitation system reliability.

Control system parts are provided by GTC Control Solutions, Inc., a wholly owned subsidiary of B7B. Parts are offered in unused, repaired, or remanufactured condition, subject to availability. Each repaired or remanufactured component undergoes functional testing in energized panels, with test reporting and warranty support provided for repair and lifecycle-extension programs.