{"product_id":"high-energy-ignition-driver-replacement-8408-921-woodward","title":"High Energy Ignition Driver Replacement | 8408-921 Woodward","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWoodward 8408-921\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacts as a high-performance single-channel ignition exciter specifically engineered for industrial gas turbine applications. This module delivers the high-energy electrical pulses required to initiate combustion within the turbine chambers, ensuring a reliable light-off even in pressurized or cold-start conditions. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efactory stock. Utilizing advanced\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSTExcite™ technology\u003c\/strong\u003e, the 8408-921 optimizes spark delivery while providing deep-level diagnostics to prevent ignition failure in power generation and marine propulsion systems.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 8408-921 combines high-power electronics with digital signal processing to maintain ignition integrity under heavy vibration.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWoodward, Inc. (USA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8408-921\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSingle Channel Exciter \/ Ignition Module\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSTExcite™ with DSP-based Diagnostics\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 VDC Nominal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-Current\/High-Energy Ignition Pulses\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDiagnostic Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSelf-test, Fault Detection, Spark Monitoring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.4 kg (11.9 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnvironmental Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVibration-resistant, Rugged Industrial Housing\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGas Turbines (Power Gen, Oil \u0026amp; Gas, Marine)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSTExcite™ Pulse Precision:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 8408-921 utilizes STExcite™ technology to generate consistent, high-energy discharges. This ensures that the ignition spark possesses enough energy to penetrate the high-density fuel-air mixture typical of modern turbine combustion liners.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDSP-Driven Self-Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAn integrated Digital Signal Processor (DSP) constantly monitors the health of the internal circuitry and the igniter lead. It identifies short circuits, open circuits, or degraded spark quality before a failed start occurs, allowing for predictive maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDrop-In Legacy Replacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWoodward designed the 8408-921 to serve as a direct replacement for older, obsolete ignition drivers. It fits existing mounting footprints and utilizes standard 24VDC power, minimizing the engineering hours required for system retrofits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized for Turbine Decks:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe heavy-duty 5.4 kg enclosure provides superior protection against the high-frequency vibrations and thermal cycles found on turbine skids. This construction prevents internal component fatigue, a common cause of failure in standard electronic modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eImproved Startup Reliability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy delivering a more stable and powerful ignition arc than analog precursors, this module reduces the number of \"failed-to-ignite\" trips, which protects the turbine from the thermal stress of repeated cranking and unburnt fuel accumulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 8408-921 improve upon older analog ignition exciters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Unlike legacy analog units that simply discharge a capacitor, the 8408-921 uses DSP-based STExcite™ technology to monitor each spark event. It provides real-time feedback on the igniter's condition and can detect a fouled or worn-out igniter plug before it causes a \"no-light\" event.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this module compatible with existing 24VDC turbine control systems?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 8408-921 operates on a nominal 24 VDC input, making it compatible with the majority of industrial turbine control power buses found in power plants and offshore platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 8408-921 be used for dual-fuel turbines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. This single-channel exciter provides the primary ignition pulse for the combustion chamber regardless of the fuel type (natural gas, diesel, or liquid fuel). In turbines with multiple combustion cans, multiple 8408-921 units are often networked or triggered in parallel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the ignition module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The solid-state design requires no periodic internal maintenance. However, we recommend using the DSP diagnostic data to periodically inspect the ignition leads and spark plugs for wear, as the module will flag increased resistance or impedance changes in the secondary circuit.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":43907398140003,"sku":"8408-921","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/58_4eace1bd-2664-4087-a032-bf926bca6403.jpg?v=1766473244","url":"https:\/\/www.autocontrolglobal.com\/products\/high-energy-ignition-driver-replacement-8408-921-woodward","provider":"AutoControl Global","version":"1.0","type":"link"}