{"product_id":"ge-4116j81-g01-shaft-voltage-monitor-board","title":"GE 4116J81-G01 Shaft Voltage Monitor Board","description":"\u003cp\u003eConfigured for shaft voltage monitoring in turbine generator architectures, the \u003cstrong\u003eGE 4116J81-G01\u003c\/strong\u003e (\u003cstrong\u003e4116J81-G01\u003c\/strong\u003e Protection PCB) provides direct physical\/electrical execution.\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\u003e4116J81-G01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE\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\u003e0.77 lbs (350 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e180 mm x 140 mm x 25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLogic side power draw nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0 to 50 V AC peak-to-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Interface\u003c\/td\u003e\n\u003ctd\u003e2-terminal high-impedance differential (10 Mohm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e0-10 V DC analog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm Relay Rating\u003c\/td\u003e\n\u003ctd\u003eNO\/NC, 1 A at 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e50 Hz to 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Signal Conditioning and Transient Suppression\u003c\/h3\u003e\n\u003cp\u003eThe board processes high-frequency AC shaft voltages across a 50 Hz to 10 kHz bandwidth via a high-impedance (10 Mohm) differential front-end. Integrated onboard filtering with an 880 uF total capacitor storage bank isolates internal analog logic from backplane bus noise and high-voltage common-mode spikes up to 100 V. Output signals are scaled to 0-10 V DC analog representations and routed to DCS backplane units while driving an onboard relay contact to trigger system trips upon threshold exceedance.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What input wiring configuration is required for the shaft measurement terminals?\u003c\/p\u003e\n\u003cp\u003eA: The input utilizes a 2-terminal high-impedance differential connection requiring shielded twisted-pair cabling to minimize common-mode electromagnetic noise.\u003c\/p\u003e\n\u003cp\u003eQ: What is the trip relay contact output rating on the 4116J81-G01?\u003c\/p\u003e\n\u003cp\u003eA: The onboard alarm relay features SPDT (NO\/NC) dry contacts rated for a maximum current execution of 1 A at 24 V DC.\u003c\/p\u003e\n\u003cp\u003eQ: Does the board process harmonic components of shaft voltage?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 50 Hz to 10 kHz frequency response captures both fundamental shaft rotation frequencies and high-frequency harmonic discharge spikes.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the turbine control cabinet and verify total de-energization of sensing lines before mounting the module.\u003c\/li\u003e\n\u003cli\u003eSecure the board vertically to the panel backplate using four M4 mounting screws through the grounded metal shield tabs.\u003c\/li\u003e\n\u003cli\u003eTerminate shielded twisted-pair input conductors from the shaft brushes to the two-terminal input block.\u003c\/li\u003e\n\u003cli\u003eGround the cable drain shield at the cabinet protective earth (PE) lug only; leave the shaft brush side ungrounded to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003eConnect the 0-10 V DC analog output and alarm relay contacts to the DCS terminal headers according to system wiring schematics.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":66735524511859,"sku":"4116J81-G01","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/4116J89-G02_Cocoai_d0591b09-7bb8-4c3e-89e6-1cddbeb5f139.jpg?v=1790668596","url":"https:\/\/www.dcssupplier.com\/products\/ge-4116j81-g01-shaft-voltage-monitor-board","provider":"DcsSupplier Limited","version":"1.0","type":"link"}