{"product_id":"woodward-8440-1667-spm-d10-digital-synchronizer","title":"Woodward 8440-1667 SPM-D10 Digital Synchronizer","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eWoodward 8440-1667\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebelongs to the SPM-D10 series of microprocessor-based digital synchronizers designed for three-phase AC generators. This unit automates the synchronization process by monitoring the voltage, frequency, and phase angle of both the generator and the busbar. It provides precise bias signals to the speed governor and automatic voltage regulator (AVR), ensuring the generator matches the grid parameters perfectly before issuing the circuit breaker \"Close\" command. As a critical safety and automation component, the 8440-1667 prevents mechanical damage and electrical surges during the paralleling process.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 8440-1667 utilizes digital processing to achieve sub-degree phase accuracy for high-demand power applications.\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\u003e8440-1667\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\u003eSPM-D10\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRated Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100\/115 Vac (Phase-Phase)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e18 to 30 Vdc\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFrequency Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e40 to 80 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Bias\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConfigurable Analog (e.g., ±10 V, 500 Ohm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFront Panel IP54 (with gasket)\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 8440-1667 SPM-D10 solves the complexities of manual synchronization and protects high-value power assets:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTrue RMS Voltage Sensing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit measures real-time RMS values rather than peak values, ensuring accurate synchronization even in environments with harmonic distortion from non-linear loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency and Phase Matching:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt continuously calculates the slip frequency and phase difference. The controller issues predictive closing pulses that account for the circuit breaker's physical closing time, ensuring contact occurs at exactly zero phase difference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDead Bus Closure Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 8440-1667 includes logic to detect a \"Dead Bus\" condition. It allows the generator to close onto a de-energized busbar immediately while preventing accidental closure if the bus is live but out of phase.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Display and Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe front-panel liquid crystal display provides real-time synchroscope visualization and numerical data. This eliminates the need for external analog synchroscopes and allows technicians to troubleshoot synchronization issues directly at the cabinet door.\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\u003eCan the 8440-1667 be used with non-Woodward governors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The SPM-D10 provides standard configurable analog bias outputs (such as ±10 V or PWM signals), making it compatible with most major governor and AVR brands including Caterpillar, Cummins, and Basler.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the \"Phase Angle Window\" setting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis setting defines the maximum allowable phase deviation before a breaker closure. The 8440-1667 ensures the generator stays within this window (e.g., ±5 degrees) to prevent the massive mechanical torque \"kick\" that occurs during out-of-phase paralleling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this unit support isolated operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe primary function of the 8440-1667 is synchronization for paralleling. However, it can remain in the circuit during isolated operation to monitor voltage and frequency, or be bypassed once the breaker is successfully closed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhy should I avoid refurbished SPM-D10 units?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSynchronizers rely on precision timing and internal relays that undergo mechanical wear. A 100% Brand New 8440-1667 guarantees that the internal high-speed relays and microprocessor timing circuits operate at factory-rated speed, which is vital for preventing \"missed\" synchronization windows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":53423494824120,"sku":"8440-1667","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/8440-1667_3.jpg?v=1777542805","url":"https:\/\/www.globalpetroparts.com\/products\/woodward-8440-1667-spm-d10-digital-synchronizer","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}