{"product_id":"relion-670-1mrk004816-ac-abb-digital-substation-controller","title":"RELION 670 1MRK004816-AC ABB Digital Substation Controller","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe ABB RET670 (1MRK004816-AC) represents the pinnacle of the RELION® 670 series, specifically engineered for comprehensive transformer protection in high-voltage substation environments. This multi-functional digital relay provides primary protection for both 2-winding and 3-winding transformers, managing complex electrical threats through high-speed processing logic. It serves as the intelligent backbone of modern digital substations, utilizing the IEC 61850 standard to facilitate seamless data exchange and fault detection. We guarantee this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal equipment, ready for mission-critical deployment.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe RET670 incorporates a wide array of protection and communication hardware designed for substation-grade reliability:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRET670\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1MRK004816-AC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Scope:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2-winding and 3-winding power transformers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProtection Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDifferential, Restricted Earth Fault (REF), Instantaneous\/Time-Delayed Overcurrent, Overexcitation, and Breaker Failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Stack:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIEC 61850-8-1 (MMS\/GOOSE), IEC 61850-9-2 (Sampled Values), Modbus, DNP3\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNetwork Connectivity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual redundant Ethernet ports (SNTP synchronization support)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24–250 V DC \/ 100–240 V AC auto-sensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput\/Output:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConfigurable binary and analog I\/O modules\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDisplay Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated graphical LCD with local control keypad\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-25°C to +55°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Standard:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e19-inch rack-mount or flush-panel integration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe RET670 1MRK004816-AC resolves significant technical hurdles in power distribution and protection:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDigital Substation Readiness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBy fully supporting Sampled Values and GOOSE messaging under IEC 61850, the RET670 eliminates miles of copper hard-wiring. It consumes digital data from Merging Units to execute protection algorithms, significantly reducing commissioning time and improving substation safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComplex Fault Discrimination:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module utilizes advanced inrush restraint and overexcitation (V\/Hz) detection. These features allow the relay to distinguish between harmless energization surges and genuine internal faults, preventing nuisance trips that cause costly grid instability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Redundancy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual Ethernet ports support redundant communication architectures. If one network path fails, the relay maintains uninterrupted connectivity to the SCADA system, ensuring that operators never lose visibility during critical fault events.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Power Architecture:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal power supply handles a vast range of voltages from 24 V DC to 240 V AC. This flexibility allows engineers to standardize on a single relay model across various substation battery bank configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 1MRK004816-AC support Restricted Earth Fault (REF) protection?\u003c\/strong\u003eA: Yes. The RET670 provides both low-impedance and high-impedance restricted earth fault protection, specifically designed to detect internal winding faults near the transformer neutral point that standard differential protection might miss.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this relay be integrated into a legacy DNP3 or Modbus network?\u003c\/strong\u003eA: Absolutely. While optimized for IEC 61850, the RET670 includes multi-protocol support for DNP3, Modbus, and IEC 60870-5-103, allowing it to bridge the gap between legacy RTUs and modern digital architectures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the Sampled Values (IEC 61850-9-2) feature?\u003c\/strong\u003eA: This feature allows the RET670 to receive digitized current and voltage measurements over the process bus. It removes the need for direct analog CT\/VT connections to the relay, simplifying the protection cabinet and enhancing galvanical isolation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the front-panel display customizable?\u003c\/strong\u003eA: The graphical LCD allows for the visualization of single-line diagrams (SLDs) and real-time primary values. Engineers can configure the HMI to show specific measurements or alarm statuses relevant to the specific transformer bay.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43831631904867,"sku":"RET670 1MRK004816-AC","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/178.2_6311c30e-4719-4cf5-9828-dc83c0fa5d9a.jpg?v=1762848633","url":"https:\/\/www.autocontrolglobal.com\/products\/relion-670-1mrk004816-ac-abb-digital-substation-controller","provider":"AutoControl Global","version":"1.0","type":"link"}