{"product_id":"woodward-8408-921-stexcite-2010","title":"WOODWARD 8408-921 STExcite 2010","description":"\u003cp\u003eThe \u003cstrong\u003eWOODWARD 8408-921\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e8408-921\u003c\/strong\u003e Ignition Module, operates as a dedicated hardware component for high-energy spark generation and arc ignition execution within gas turbine combustion networks.\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\u003e8408-921\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWOODWARD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.44 kg (12.00 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e75 VA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e103 to 127 VAC (115 VAC nominal, 50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Spark Rate\u003c\/td\u003e\n\u003ctd\u003e1.8 +\/- 0.1 sparks\/second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpen Circuit Voltage\u003c\/td\u003e\n\u003ctd\u003e15 to 20 kV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Current Output\u003c\/td\u003e\n\u003ctd\u003e1200 A minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eActuator Loop Feedback Response and High-Energy Ignition Execution\u003c\/h3\u003e\n\u003cp\u003eThe internal digital signal processor (DSP) continuously samples line input voltage and internal thermal operating limits. Upon power application, internal power conversion stages convert 115 VAC to high-voltage discharge energy, delivering 15 to 20 kV pulses at a rate of 1.8 sparks per second to connected igniter leads. Dynamic pulse timing maintains high actuator loop feedback response and firing stability across severe combustion backpressure variations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the internal DSP handle diagnostic fault monitoring during an ignition cycle?\u003c\/p\u003e\n\u003cp\u003eA: The onboard DSP monitors input power thresholds, cycle duration, and internal temperature. If an out-of-range condition or missing igniter lead is detected, the unit de-energizes its internal fault relay and halts firing to protect the internal circuitry.\u003c\/p\u003e\n\u003cp\u003eQ: What are the primary grounding requirements for the high-voltage exciter box?\u003c\/p\u003e\n\u003cp\u003eA: The unit must be bonded to the main protective earth grid using a low-impedance conductor, with flexible high-voltage ignition lead shielding grounded at the exciter housing only to avoid ground loop current interference.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the heavy-duty enclosure vertically on a flat surface using designated mounting holes to support the 5.44 kg mass.\u003c\/li\u003e\n\u003cli\u003eVerify that the AC supply voltage stays within the specified 103 to 127 VAC window before energizing the input power relay.\u003c\/li\u003e\n\u003cli\u003eConnect flexible high-voltage ignition cables to the dual-port outputs and verify secure mechanical coupling to the igniter plugs.\u003c\/li\u003e\n\u003cli\u003eRoute low-voltage AC input lines and diagnostic fault relay cabling in separate grounded conduits away from the high-voltage discharge leads.\u003c\/li\u003e\n\u003cli\u003eProvide a minimum surrounding air clearance of 50 mm around the housing to facilitate thermal heat dissipation during continuous sparking sequences.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":50734040383740,"sku":"8408-921","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/8405-0092.jpg?v=1772521831","url":"https:\/\/www.electronicplc.com\/es\/products\/woodward-8408-921-stexcite-2010","provider":"Electronic PLC","version":"1.0","type":"link"}