The GE IS200EXAMG1BAA is an Exciter Attenuator Module designed to protect generator shafts in industrial control systems, working in tandem with the EGDM board as a field ground detector. Its primary role is to identify ground paths in exciter components by driving the electrical center of the field winding with a low-frequency AC voltage relative to ground, ensuring early detection of potential faults.
Featuring two female connectors—J1 and J2—the module integrates essential components: a surface wiring screw terminal (TB1), three jumper switches, stab-on connectors, metal oxide varistors, a relay, four large polyester vinyl capacitors, and twenty wire-wound resistors. As part of GE’s Mark VI Series, its part number encodes key details, including domestic manufacture, “EXAM” functional classification, normal PCB coating, Group 1 series grouping, and a three-fold revision.
Features:
Ground Detection: Collaborates with the EGDM board to detect ground paths in exciter components, safeguarding generator shafts from electrical faults.
Field Winding Regulation: Drives a low-frequency AC voltage to the field winding’s electrical center relative to ground, enabling precise fault monitoring.
Robust Connectivity: Includes J1/J2 connectors, TB1 surface wiring terminal, and E1/E2 stab-on connectors for secure integration into control systems.
Component Synergy: Metal oxide varistors, capacitors, and wire-wound resistors ensure stable voltage regulation and signal attenuation.
Mark VI Integration: Part number “IS200EXAMG1BAA” indicates Mark VI compatibility, domestic manufacture, and Group 1 classification, with normal PCB coating for durability.
Configurable Design: Three jumper switches allow customization for specific system requirements, enhancing adaptability in industrial setups.
Safety Focus: Critical for preventing electrical damage to generators, supporting reliable operation in power generation and heavy machinery applications.
