{"product_id":"sr-735-5-5-hi-485-ge-sr735-series-feeder-protection-relay","title":"SR-735-5-5-HI-485 GE SR735 Series Feeder Protection Relay","description":"\u003cp\u003eThe \u003cstrong\u003eGE SR-735-5-5-HI-485\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSR735\u003c\/strong\u003e Feeder Protection Relay, operates as a dedicated hardware component for overcurrent protection and fault detection within utility and industrial distribution network infrastructure.\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\u003eSR-735-5-5-HI-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eCanada \/ United States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.35 kg (11.79 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard SR735 Panel Mount Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 - 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eControl Power: 90 - 300 VDC, 70 - 265 VAC @ 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Elements\u003c\/td\u003e\n\u003ctd\u003e50\/51 (Phase Overcurrent), 50G\/51G (Ground Overcurrent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase CT Secondary\u003c\/td\u003e\n\u003ctd\u003e5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGround CT Secondary\u003c\/td\u003e\n\u003ctd\u003e5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Interface\u003c\/td\u003e\n\u003ctd\u003eRS485 2-wire serial connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware Flash Compatibility and Processing Architecture\u003c\/h3\u003e\n\u003cp\u003eThe relay evaluates secondary current transformers scaled for 5 A nominal inputs, driving dedicated protective math channels directly inside the hardware execution loop. Phase and ground overcurrent states execute based on ANSI 50\/51 and 50G\/51G curve computations. Synchronous logic integration with local substation SCADA architectures requires matching firmware flash compatibility layers across the RS485 2-wire serial link to prevent communication buffer timeout errors during heavy transient trip events.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the SR-735-5-5-HI-485 relay chassis be withdrawn or hot-swapped while the secondary CT circuits are live?\u003c\/p\u003e\n\u003cp\u003eA: No. The current transformer secondary circuits must be externally shorted via a test switch block before any chassis removal. Extracting a live relay card without shorting the CT circuit will induce destructive open-circuit high voltage across the terminal block.\u003c\/p\u003e\n\u003cp\u003eQ: How is the RS485 network topology affected during firmware flash compatibility adjustments?\u003c\/p\u003e\n\u003cp\u003eA: Firmware differences between individual nodes can reset device address and baud rate registers to factory defaults. Substation automation loops must verify matching register mapping configurations post-flashing to maintain deterministic poll schedules.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Transformer Termination:\u003c\/strong\u003e Attach all 5 A phase and ground CT secondary wires firmly to the specified high-current screw terminal strip, ensuring minimum contact resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRS485 Serial Link Isolation:\u003c\/strong\u003e Route the RS485 2-wire serial network cabling using shielded twisted-pair (STP) conductors, keeping physical separation from heavy power bus lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Voltage Grounding:\u003c\/strong\u003e Terminate the shield layer of the communication cable at one single point in the grid, and ensure the relay chassis ground lug links directly to the local sub-station earth ground bar.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":53114334839093,"sku":"SR-735-5-5-HI-485","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/735-5-5-HI-485.png?v=1783670043","url":"https:\/\/www.5gplc.com\/products\/sr-735-5-5-hi-485-ge-sr735-series-feeder-protection-relay","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}