{"product_id":"protech-gii-configurable-overspeed-protection-device-8237-1246-woodward-micronet","title":"ProTech-GII Configurable Overspeed Protection Device 8237-1246 Woodward MicroNet","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWoodward 8237-1246\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-integrity, configurable overspeed detection system within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eProTech-GII\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eseries. Designed to protect steam, gas, and hydro turbines, this bulkhead-mount device monitors turbine speed and acceleration to initiate emergency shutdowns during dangerous overspeed events. It utilizes a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2-out-of-3 (2oo3) voted architecture\u003c\/strong\u003e, ensuring that a single component failure cannot cause a nuisance trip or prevent a valid safety trip, providing SIL-rated reliability for critical power generation assets.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 8237-1246 integrates redundant processing with rugged environmental protection.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\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\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\u003e8237-1246\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProTech-GII\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Power\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh Voltage (90–264 Vac \/ 100–150 Vdc)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eArchitecture\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTriple Modular Redundant (TMR) \/ 2-out-of-3 Voted\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP56 (Dust and Water Resistant)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTriple 4.2-inch Keypad Displays\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Analog Output (4-20mA)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-20°C to +60°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New and Original\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\u003cp\u003eThe 8237-1246 offers several key advantages for turbine safety and plant availability:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOnline Maintenance and Hot-Swap:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe triple-modular design allows technicians to replace individual modules while the turbine remains operational. This \"hot replacement\" capability eliminates costly downtime during safety system maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Acceleration Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBeyond simple overspeed, the unit calculates the derivative of the speed signal. This allows the system to trip the turbine before it reaches the physical overspeed setpoint during a sudden load loss.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSulfur Contamination Resistance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInternal circuit boards feature a specialized conformal coating that protects against H2S and SO2 gases. This makes the 8237-1246 ideal for geothermal plants and refineries where corrosive atmospheric conditions are common.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAutomated Testing Routines:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe device performs routine internal overspeed tests for each module using an integrated frequency generator. This validates the entire safety loop without requiring an actual overspeed condition on the turbine.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 8237-1246 require a specific mounting orientation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, you must mount the bulkhead unit vertically to ensure proper cooling and internal component longevity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of \"2-out-of-3 voted\" relays in this model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit compares trip signals from all three internal modules. It only initiates a physical shutdown if at least two modules agree on the fault. This configuration significantly reduces the risk of \"false trips\" caused by a single faulty sensor or module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the unit handle MPU (Magnetic Pickup) failures?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe system includes dedicated MPU open-wire detection. It validates the connection before startup and continuously monitors for a \"loss-of-speed\" signal during operation, triggering an alarm or trip based on your specific safety configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this device for hydro turbines as well as gas\/steam?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsolutely. The ProTech-GII is fully configurable to match the response curves and trip setpoints required for all major types of rotating machinery, including hydro turbines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":53423490498744,"sku":"8237-1246","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/8237-1246_1.jpg?v=1777542225","url":"https:\/\/www.globalpetroparts.com\/products\/protech-gii-configurable-overspeed-protection-device-8237-1246-woodward-micronet","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}