{"product_id":"ge-is200edexg1aea-exciter-de-excitation-control-boards","title":"GE IS200EDEXG1AEA  Exciter De-Excitation Control Boards","description":"\u003cp\u003eThe \u003cstrong\u003eGeneral Electric IS200EDEXG1AEA\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eIS200EDEXG1AEA\u003c\/strong\u003e Exciter De-Excitation Control Board, operates as a dedicated hardware component for emergency energy dissipation and Silicon Controlled Rectifier (SCR) gating control within GE Excitation Control Systems. This compact circuit board assembly provides direct physical and electrical execution of localized field discharge routines when field breakers or 41dc contactors open during emergency shutdown sequences. It functions as an active hardware interface inside the EX2100e Series framework, coordinating SCR firing paths to manage the gradual discharge of generator field energy and prevent destructive inductive voltage surges.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eIS200EDEXG1AEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGeneral Electric (GE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eEX2100e Excitation Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States of America (USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e3.175 cm high x 12.7 cm wide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-30 to +65 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input Interface\u003c\/td\u003e\n\u003ctd\u003eConnectors J1 and J2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Input Port\u003c\/td\u003e\n\u003ctd\u003eConnector J8 (De-excitation signal input from EXTB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJumper Matrix Layout\u003c\/td\u003e\n\u003ctd\u003eStab connectors E1B through E12 for wire jumpers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnode Interface\u003c\/td\u003e\n\u003ctd\u003eStab connector E1A (Wire jumpered to the SCR anode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Product Type\u003c\/td\u003e\n\u003ctd\u003eExciter De-Excitation Control Board Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and System Integration\u003c\/h3\u003e\n\u003cp\u003eThe IS200EDEXG1AEA processes time-critical de-excitation routines, relying on hardware-mapped signal connections to maintain rapid execution windows that prevent backplane bus communication velocity degradation under fault states. The board operates in close loop coordination with the master EMIO (Exciter Main Input\/Output) and EXTB (Exciter Terminal Board) modules. When the EMIO triggers an emergency shutdown and forces the 41dc contactor to open, auxiliary contact state changes feed back to the EDEX module via connector J8. The internal logic immediately alters the SCR gate firing angles based on this real-time transition, ensuring that firmware flash compatibility and synchronization across the control rack remain stable throughout heavy load shedding events.\u003c\/p\u003e\n\u003ch3\u003eOperational Features and Application Data\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConduction Sense Feedback:\u003c\/strong\u003e Integrates discrete conduction sense feedback loops that continuously monitor the physical state of the SCRs. This real-time diagnostic array tracks active current conduction windows, allowing the board to alter firing sequences dynamically to stabilize energy dissipation rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransient Voltage Retention:\u003c\/strong\u003e Incorporates hardware-level retention networks to maintain control voltage levels across the board during unexpected input power disruptions. This localized energy storage prevents uncommanded component resets and stabilizes gating circuits during brief electrical supply drops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStab Jumper Selection Matrix:\u003c\/strong\u003e Employs stab connectors E1B through E12 to accommodate manual wire jumpers. These jumpers select the specific configuration of break-over diodes (BOD) and current-limiting resistors needed to match the voltage ratings and frame size of the destination SCR stack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSCR Gating and Anode Link:\u003c\/strong\u003e Utilizes stab connector E1A to link directly to the SCR anode via a physical wire jumper. This low-impedance electrical interface allows the board to drive the firing pulse straight to the power semiconductor components, facilitating controlled discharge routing.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":45052985573491,"sku":"IS200EDEXG1AEA","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-05-28_10-48-47_ee6cf853-b6a0-49db-b9e9-5a5e1f9b628f.png?v=1779938737","url":"https:\/\/www.dcssupplier.com\/products\/ge-is200edexg1aea-exciter-de-excitation-control-boards","provider":"DcsSupplier Limited","version":"1.0","type":"link"}