{"product_id":"woodward-8237-1247-protech-gii-over-speed-detection-system","title":"Woodward 8237-1247 ProTech-GII Over-Speed Detection System","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 8237-1247\u003c\/strong\u003e is a triple modular over-speed detection system designed to monitor turbine rotor speed and acceleration for industrial turbines. Operating via active or passive magnetic pickups (MPUs), the unit issues a precise shutdown command to the turbine trip valve or corresponding trip system. The \u003cstrong\u003e8237-1247\u003c\/strong\u003e features a bulkhead mount enclosure with IP56 dust and water resistance, integrating 4 to 20 mA speed readouts and Modbus communications. It utilizes two redundant trip relays and supports high-voltage power inputs to ensure reliable safety instrumented protection across hydro, steam, and gas turbine applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTriple modular design enabling online replacement of individual modules during operation\u003c\/li\u003e\n\u003cli\u003eActive or passive MPU detection for rotor speed and acceleration monitoring\u003c\/li\u003e\n\u003cli\u003eTwo redundant trip relays for reliable emergency shutdown execution\u003c\/li\u003e\n\u003cli\u003e4 to 20 mA speed readouts and Modbus communication support\u003c\/li\u003e\n\u003cli\u003eResistance to sulfur contamination, H2S, and CO2 gases\u003c\/li\u003e\n\u003cli\u003eBuilt-in routine testing functionality using an internal frequency generator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHydro turbines\u003c\/li\u003e\n\u003cli\u003eSteam turbines\u003c\/li\u003e\n\u003cli\u003eGas turbines\u003c\/li\u003e\n\u003cli\u003eTurbine over-speed and over-acceleration protection systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWoodward\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8237-1247\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProTech-GII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e330 mm x 486 mm x 153 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP56 dust and water resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHigh Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 150 Vdc at 30 W per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterrupt Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 ms when on 1 power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKeypad \/ Display\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 Keys Total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLow Input Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNominal 24 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 degC (-4 to +140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20 to +65 degC (-4 to +158 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS-232 Com Port (3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26 lbs 12 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the bulkhead unit securely in a standard industrial cabinet door environment.\u003c\/li\u003e\n\u003cli\u003eWire active or passive MPUs to the designated signal inputs for accurate turbine speed and acceleration monitoring.\u003c\/li\u003e\n\u003cli\u003eConnect high-voltage (100 to 150 Vdc) or low-voltage (nominal 24 Vdc) power supplies according to the module rating specifications.\u003c\/li\u003e\n\u003cli\u003eVerify redundant trip relay connections to the turbine trip valve prior to system commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIEC 721-3-3 1994 classification\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":53650279760235,"sku":"8237-1247","price":33.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/8237-1247_1.jpg?v=1785668483","url":"https:\/\/www.plcprotech.com\/uz\/products\/woodward-8237-1247-protech-gii-over-speed-detection-system","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}