{"product_id":"abb-red670-1mrk004810-ab-line-differential-protection","title":"ABB RED670 1MRK004810-AB Line Differential Protection","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRED670 (1MRK004810-AB)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an advanced Intelligent Electronic Device (IED) within the ABB Relion 670 series, specifically optimized for high-speed line differential protection. It serves as a mechanical necessity for protecting critical transmission and distribution infrastructure by providing phase-segregated fault detection. \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\/ID\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRED670\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1MRK004810-AB\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e: Relion 670\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e: High-speed, phase-segregated line differential protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackup Protection\u003c\/strong\u003e: 5-zone Distance Protection, Directional Overcurrent\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth Fault Protection\u003c\/strong\u003e: Sensitive Earth Fault (SEF) for high-resistance detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Interface\u003c\/strong\u003e: Support for IEEE C37.94 (fiber optic) and IEC 61850\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNetwork Redundancy\u003c\/strong\u003e: PRP (Parallel Redundancy Protocol) and HSR (High-availability Seamless Redundancy)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e: Two-ended and multi-ended lines (transformer in-zone support)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: -25°C to +55°C\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\u003eHigh-Speed Differential Protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRED670 1MRK004810-AB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eutilizes a sophisticated phase-segregated differential principle. It continuously monitors the current vectors at all ends of the line and calculates the differential current. If the vector sum exceeds the threshold, the relay issues a trip command. This method provides absolute selectivity, ensuring that the relay only trips for internal faults while remaining completely stable during external through-faults or heavy load swings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Multi-Zone Backup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo ensure the line remains protected even if the communication link between terminals is interrupted, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1MRK004810-AB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eincludes a full-featured distance protection scheme. It provides up to five zones of protection with high-speed under-impedance detection. Combined with directional overcurrent and sensitive earth fault (SEF) logic, this creates a layered defense capable of detecting high-resistance ground faults that standard protection might overlook.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Substation Readiness\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis IED is built for the modern utility network. It natively supports IEC 61850 Edition 1 and 2, facilitating horizontal communication (GOOSE) for fast interlocking and vertical communication to SCADA. For line-to-line communication, it utilizes the C37.94 standard over optical fiber, ensuring low-latency data exchange that is immune to electromagnetic interference (EMI) from the high-voltage environment.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":47160317345982,"sku":"RED670 1MRK004810-AB","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_13-51-06_0d960f42-1617-4f1a-8856-10c33e4c9298.png?v=1778839226","url":"https:\/\/www.autooiltech.com\/products\/abb-red670-1mrk004810-ab-line-differential-protection","provider":"AutoOilTech Limited","version":"1.0","type":"link"}