{"product_id":"siemens-7sj5311-4ea02-1aa0-ff-numerical-protection-relay","title":"Siemens 7SJ5311-4EA02-1AA0\/FF Numerical Protection Relay","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e7SJ5311-4EA02-1AA0\/FF\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance numerical protection relay from the Siemens SIPROTEC family, specifically engineered for the comprehensive protection of lines and motors. This versatile unit provides rapid fault detection and system stability for industrial power distribution networks. Equipped with advanced monitoring capabilities for current, voltage, and power, it integrates seamlessly into SCADA systems via IEC 870-5-103. Its rugged design and flexible auxiliary voltage options make it the ideal choice for ensuring operational continuity in demanding electrical environments.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManufacturer:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eSiemens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eModel Number:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e7SJ5311-4EA02-1AA0\/FF\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eNumerical Protection Relay\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAuxiliary Voltage:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e24V to 250V DC (Multi-range support)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAnalog Inputs:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e5 Current Transformers \/ 3 Voltage Transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBinary I\/O:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e11 Binary Inputs \/ 5 Alarm Relays \/ 4 Command Relays\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCommunication:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIEC 870-5-103 (SCADA), DIGSI Software Interface, Modem Support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOperating Temperature:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e-25°C to +60°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProtection Class:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIP20\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMonitoring Parameters:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eI, V, P, Q, f,\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mop\"\u003ecos\u003c\/span\u003e\u003cspan class=\"mspace\"\u003e\u003c\/span\u003e\u003cspan class=\"mord mathnormal\"\u003eϕ\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e, Operating Hours\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMetering:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eActive Power (\u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e\u003cspan class=\"mord mathnormal\"\u003eW\u003c\/span\u003e\u003cspan class=\"msupsub\"\u003e\u003cspan class=\"vlist-t vlist-t2\"\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003cspan class=\"pstrut\"\u003e\u003c\/span\u003e\u003cspan class=\"sizing reset-size6 size3 mtight\"\u003e\u003cspan class=\"mord mathnormal mtight\"\u003ep\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"vlist-s\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e) and Reactive Power (\u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e\u003cspan class=\"mord mathnormal\"\u003eW\u003c\/span\u003e\u003cspan class=\"msupsub\"\u003e\u003cspan class=\"vlist-t vlist-t2\"\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003cspan class=\"pstrut\"\u003e\u003c\/span\u003e\u003cspan class=\"sizing reset-size6 size3 mtight\"\u003e\u003cspan class=\"mord mathnormal mtight\"\u003eq\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"vlist-s\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"vlist-r\"\u003e\u003cspan class=\"vlist\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntegrated Control \u0026amp; Protection:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eCombines high-speed numerical protection with local control functions, reducing the need for separate hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eComprehensive Monitoring:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eReal-time tracking of operational measured values and energy metering for precise system diagnostics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFlexible Communication:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eReady for modern smart grids with SCADA integration and remote connectivity via modem or DIGSI software.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUser-Friendly Interface:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a local graphic display for easy interaction, threshold setting, and manual system overrides.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHigh-Density I\/O:\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eExtensive digital inputs and command relays allow for complex interlocking and alarm signaling within the switchgear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":44591100199027,"sku":"7SJ5311-4EA02-1AA0\/FF","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/4b5e30ed74ee999866c23559d346db6a.png?v=1775126339","url":"https:\/\/www.dcssupplier.com\/products\/siemens-7sj5311-4ea02-1aa0-ff-numerical-protection-relay","provider":"DcsSupplier Limited","version":"1.0","type":"link"}