{"product_id":"abb-reb500-busbar-protection-relay","title":"ABB REB500 Busbar Protection Relay","description":"\u003ch3\u003e\u003cstrong\u003eABB REB500 Relion Busbar and Backup Protection Relay\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREB500\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-integrity protection relay within the ABB Relion family, specifically engineered for high-impedance-based applications in utility and industrial power systems. As a mechanical necessity for station stability, it serves as a primary busbar protection unit and a versatile multipurpose backup relay. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e: ABB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Designation\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREB500\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e: Relion 611\/500 series\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProtection Principle\u003c\/strong\u003e: High-impedance differential protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Range\u003c\/strong\u003e: Busbars, Generators, Motors, Transformers, Reactors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Standards\u003c\/strong\u003e: IEC 61850 Edition 1 and 2, GOOSE messaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRedundancy Protocols\u003c\/strong\u003e: HSR (High-availability Seamless Redundancy) and PRP (Parallel Redundancy Protocol)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e: Web-browser-based HMI with integrated I\/O matrix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Style\u003c\/strong\u003e: Withdrawable plug-in unit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e: Compact footprint for space-optimized mounting\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Factory-tested, application-specific standard configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNetwork Connectivity\u003c\/strong\u003e: Optional second Ethernet bus for self-healing loops\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Functional Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSpecialized Busbar and REF Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREB500\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexcels in high-impedance schemes where high-speed fault clearance is critical to prevent equipment destruction. It provides reliable zone protection for busbars and acts as a sensitive monitor for internal winding faults in transformers and motors (Restricted Earth-Fault). Its high-impedance logic ensures that the relay remains stable during external through-faults while maintaining microsecond response times for internal zone faults.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModular Maintenance and Swift Testing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe relay features a withdrawable plug-in unit design, allowing for the active electronics to be removed without disturbing the primary terminal wiring. This mechanical advantage drastically shortens the Mean Time To Repair (MTTR) and allows for safe, convenient bench testing or unit replacement during critical maintenance windows, minimizing costly system downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResilient Digital Communication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFully compliant with IEC 61850 Editions 1 and 2, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREB500\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eintegrates seamlessly into modern digital substations. It supports binary GOOSE messaging for high-speed horizontal communication between IEDs. With the optional second Ethernet bus, the device implements HSR or PRP redundancy, ensuring that the protection system maintains communication even if a physical network path is severed.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":47160278089918,"sku":"REB500","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-05-08_11-17-47_dbe8f82c-b768-4080-897b-e224036760b8.png?v=1778838785","url":"https:\/\/www.autooiltech.com\/products\/abb-reb500-busbar-protection-relay","provider":"AutoOilTech Limited","version":"1.0","type":"link"}