{"product_id":"7sj5311-4ea02-1aa0-ff-siemens-siprotec-7sj531-datasheet-manual","title":"7SJ5311-4EA02-1AA0\/FF Siemens SIPROTEC 7SJ531 Datasheet \u0026 Manual","description":"\u003ch2\u003eSiemens 7SJ5311-4EA02-1AA0\/FF SIPROTEC 7SJ531 Protection Relay\u003c\/h2\u003e\n\u003cp\u003eConfigured for feeder and motor protection in industrial substations and distribution networks, the \u003cstrong\u003eSiemens 7SJ5311-4EA02-1AA0\/FF\u003c\/strong\u003e (\u003cstrong\u003e7SJ531\u003c\/strong\u003e Numerical Protection Relay) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch4\u003eHardware Specifications\u003c\/h4\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\u003e7SJ5311-4EA02-1AA0\/FF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany \/ USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.43 kg (3.15 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e260 mm x 330 mm x 95 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-25 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive measurement overhead; auxiliary voltage bounds 24-250 V DC \/ 80-230 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd\u003e5 x CT (current transformer), 3 x VT (voltage transformer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital I\/O\u003c\/td\u003e\n\u003ctd\u003e11 binary inputs, 5 alarm relays, 4 command relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols\u003c\/td\u003e\n\u003ctd\u003eIEC 61850, IEC 870-5-103, PROFIBUS, RS485, MODBUS, DNP3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eIntegrated graphic display with local control keypad matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe numerical protective architecture interfaces with substations through its comprehensive hardware array, handling concurrent overcurrent, voltage, and frequency protection tasks. Field data mapped over multi-protocol ports ensures integration with centralized monitoring nodes. This I\/O density scaling capacity enables instantaneous binary telemetry routing across Profinet \/ EtherNet\/IP deterministic networks when retrofitted with protocol gateway interfaces. This architecture maintains microsecond fault time-stamping accuracy without data dropouts on high-speed system buses.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What action must be executed to alter parameter configurations or review structural fault logs?\u003c\/p\u003e\n\u003cp\u003eA: Modifications and diagnostic analytics require a physical connection to a terminal running DIGSI 4 or DIGSI 5 setup software. Parameters cannot be edited through external serial command lines without validating security keys inside the DIGSI environment.\u003c\/p\u003e\n\u003cp\u003eQ: How does the unit react to deep supply voltage fluctuations on the auxiliary power circuit?\u003c\/p\u003e\n\u003cp\u003eA: The broad range switching matrix accepts 24 V DC to 250 V DC and 80 V AC to 230 V AC. Variations remaining inside these calibrated electrical plateaus do not impact trip coil activation speeds or logic board processing stability.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Subpanel Mounting:\u003c\/strong\u003e Mount the chassis in a clean panel layout cut to match the structural depth clearances. Fasten all corner retainers to prevent vibration-induced mechanical stresses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransformer Secondary Grounding:\u003c\/strong\u003e All current transformer (CT) and voltage transformer (VT) connections must be firmly terminated at the back terminal strips. Ensure common-point grounding rules are strictly maintained to prevent floating high-voltage potentials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Cable Shielding:\u003c\/strong\u003e Lay serial and ethernet lines separated from raw motor power circuits, grounding the line shields at the cable entry gland plates to mitigate induced electromagnetic fields.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":43441523916890,"sku":"7SJ5311-4EA02-1AA0\/FF","price":90.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/219._abc9683c-425e-4b76-a21f-4134a94f00f2.jpg?v=1780366441","url":"https:\/\/www.spareoil.com\/products\/7sj5311-4ea02-1aa0-ff-siemens-siprotec-7sj531-datasheet-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}