{"product_id":"woodward-8440-1868-dtsc-200-55b-automatic-transfer-switch-controller","title":"Woodward 8440-1868 DTSC-200-55B Automatic Transfer Switch Controller","description":"\u003ch2\u003eWoodward 8440-1868 DTSC-200-55B Automatic Transfer Switch Controller\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWoodward 8440-1868\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDTSC-200-55B\u003c\/strong\u003e Automatic Transfer Switch Controller, operates as a dedicated hardware component for automatic source transfer and ATS management within three-phase utility and generator networks. Powered by a 12\/24 VDC auxiliary power supply, this microprocessor-based unit monitors source availability and controls open, delayed, and closed transition sequences. It executes load shed\/restore routines, transfer inhibit signals, and elevator pre-signals while coordinating power transfers in Main-Gen, Gen-Gen, and Main-Main system topologies.\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\u003e8440-1868 (DTSC-200-55B)\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\u003e1.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption \/ Input Voltage\u003c\/td\u003e\n\u003ctd\u003e12\/24 VDC auxiliary power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAutomatic Transfer Switch (ATS) Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Series\u003c\/td\u003e\n\u003ctd\u003eDTSC-200 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Topology\u003c\/td\u003e\n\u003ctd\u003eThree-phase (Main-Gen, Gen-Gen, Main-Main)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransition Modes\u003c\/td\u003e\n\u003ctd\u003eOpen, delayed, and closed transition with in-phase monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosed Transition Overlap\u003c\/td\u003e\n\u003ctd\u003eLess than 100 ms momentary make-before-break (extendable via discrete input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfigurable Control Functions\u003c\/td\u003e\n\u003ctd\u003eTransfer inhibit, source selection, load shed\/restore, elevator pre-signal, engine test programs\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\u003c\/h3\u003e\n\u003cp\u003eThe Woodward 8440-1868 processes dynamic voltage, phase alignment, and frequency inputs to execute high-speed closed-transition transfers with less than 100 ms overlap time. Utilizing in-phase monitoring routines, the controller synchronizes breaker closure commands between active sources to maintain continuous voltage stability across critical load buses. This closed-loop phase-matching calculation prevents voltage phase jumps and current transients during make-before-break switching operations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the Woodward 8440-1868 manage source synchronization during closed-transition transfers?\u003c\/p\u003e\n\u003cp\u003eA: The onboard micro-controller monitors the phase angle and voltage differential between both live power sources. When both sources fall within programmed synch-check parameters, the controller commands closed-transition transfer with a momentary overlap period under 100 ms.\u003c\/p\u003e\n\u003cp\u003eQ: What auxiliary DC voltage range maintains stable controller operation?\u003c\/p\u003e\n\u003cp\u003eA: The module operates on a nominal 12\/24 VDC auxiliary supply. System wiring must maintain clean DC input voltage within standard industrial tolerances to ensure continuous processing during transfer sequences.\u003c\/p\u003e\n\u003cp\u003eQ: How should signal wiring be routed during panel installation to avoid electrical interference?\u003c\/p\u003e\n\u003cp\u003eA: Technicians must separate low-voltage DC power supply and discrete control leads from high-voltage AC sensing circuits. Use twisted, shielded cables for all sensitive control inputs and ground the cable shields at a single chassis ground connection.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit securely into a panel cutout using the provided mounting hardware to ensure mechanical stability in high-vibration power generation environments. Route auxiliary 12\/24 VDC supply wiring away from three-phase AC sensing lines to eliminate electromagnetic noise coupling. Connect all signal shield conductors directly to the main cabinet earth grounding bar near the terminal blocks. Verify all screw connections meet panel assembly torque specifications before supplying auxiliary control power.\u003c\/p\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":43907564077155,"sku":"8440-1868","price":310.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/62_97170101-6f39-4b26-a5ba-b88352290cdf.jpg?v=1766474667","url":"https:\/\/www.autocontrolglobal.com\/products\/woodward-8440-1868-dtsc-200-55b-automatic-transfer-switch-controller","provider":"AutoControl Global","version":"1.0","type":"link"}