{"product_id":"mri3i5e5dm-digital-protection-relay-woodward","title":"MRI3I5E5DM Digital Protection Relay Woodward","description":"\u003cp\u003eThe \u003cstrong\u003eWoodward MRI3I5E5DM\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMRI3\u003c\/strong\u003e Digital Protection Relay, operates as a dedicated hardware component for current monitoring and overcurrent protection within electrical power distribution systems.\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\u003eMRI3I5E5DM\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\u003e0.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e144 mm x 72 mm x 130 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24-270 VDC or 24-230 VAC auxiliary range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003eUp to 95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current\u003c\/td\u003e\n\u003ctd\u003e1 A or 5 A (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvercurrent Setting Range\u003c\/td\u003e\n\u003ctd\u003e0.5-20 x In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime Delay Range\u003c\/td\u003e\n\u003ctd\u003e0.1-20 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEarth Fault Current Range\u003c\/td\u003e\n\u003ctd\u003e0.01-2 x In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Contacts\u003c\/td\u003e\n\u003ctd\u003e4 changeover contacts (250 VAC, 8 A rating)\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 and Overcurrent Protection\u003c\/h3\u003e\n\u003cp\u003eThe Woodward MRI3I5E5DM utilizes high-speed digital signal processing to analyze selectable 1 A or 5 A current inputs and deliver deterministic actuator loop feedback response during fault conditions. By evaluating phase overcurrent levels across a 0.5-20 x In range and earth fault thresholds from 0.01-2 x In, the internal logic triggers its 4 changeover output contacts within user-defined time delays (0.1-20 s). This closed-loop monitoring ensures rapid trip signal generation to isolate upstream breakers and safeguard electrical distribution hardware.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What auxiliary power supply options are compatible with the Woodward MRI3I5E5DM?\u003c\/p\u003e\n\u003cp\u003eA: The relay accepts a wide-range auxiliary voltage supply operating from 24 to 270 VDC or 24 to 230 VAC.\u003c\/p\u003e\n\u003cp\u003eQ: What are the output contact ratings and relay configurations on this module?\u003c\/p\u003e\n\u003cp\u003eA: The module is equipped with 4 changeover contacts rated for maximum switching capacities of 250 VAC at 8 A.\u003c\/p\u003e\n\u003cp\u003eQ: What are the current input sensing ranges for phase overcurrent and earth fault monitoring?\u003c\/p\u003e\n\u003cp\u003eA: The unit features selectable rated inputs of 1 A or 5 A, supporting overcurrent pickup settings from 0.5 to 20 x In and earth fault settings from 0.01 to 2 x In.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePanel mount the 144 mm x 72 mm x 130 mm enclosure securely in a clean cutout, ensuring tight seal engagement against the cabinet door.\u003c\/li\u003e\n\u003cli\u003eConnect auxiliary power lines within the allowable 24-270 VDC \/ 24-230 VAC parameters, verifying proper terminal isolation.\u003c\/li\u003e\n\u003cli\u003eWire CT secondary current lines (1 A or 5 A) using high-integrity terminal blocks, ensuring CT lines are never open-circuited while energized.\u003c\/li\u003e\n\u003cli\u003eMaintain clear physical separation between current transformer sensing wires and high-voltage changeover relay output lines to prevent crosstalk and noise pickup.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Woodward","offers":[{"title":"Default Title","offer_id":50695035257084,"sku":"MRI3I5E5DM","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/MRI3I5E5DM2.jpg?v=1785116692","url":"https:\/\/www.electronicplc.com\/products\/mri3i5e5dm-digital-protection-relay-woodward","provider":"Electronic PLC","version":"1.0","type":"link"}