{"product_id":"abb-rec670-bay-control-ied","title":"ABB REC670 Bay Control IED","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB REC670\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a professional-grade Bay Control Unit (BCU) belonging to the Relion® 670 series. It is designed for the comprehensive control, protection, and monitoring of various bay types within power transmission and distribution networks. Engineered for high-reliability requirements, the REC670 is suitable for all voltage levels, from medium voltage to the highest extra-high voltage (EHV) levels. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCurrent Transformer (CT) Interface Data\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe REC670 is designed to interface with high-precision Current Transformers to ensure accurate sensing and protection performance under both normal and fault conditions.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2000\/1 A CT Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis setup is used for high-current measurements with a ratio of 2000 primary amps to 1 secondary amp. It features a Class 5P20 accuracy rating with a 20 VA burden and a secondary resistance of 6.2 ohms. The cable loop resistance must be kept below 0.8 ohms at 75°C (typically less than 100 meters of 2.5mm² cable).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e100\/5 A CT Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis setup is intended for lower-current measurements with a ratio of 100 primary amps to 5 secondary amps. It features a Class 5P20 accuracy rating with a 10 VA burden and a secondary resistance of 0.26 ohms. The cable loop resistance must be kept below 0.4 ohms at 75°C (typically less than 50 meters of 2.5mm² cable).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFault Current Handling:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor both CT types, the unit is rated to handle a maximum fault current of 40 kA, limited by the switchgear's rated fault capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCable loop resistance is strictly limited to minimize voltage drops and prevent CT saturation, ensuring the IED receives a true representation of the primary current during faults.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication \u0026amp; Engineering Highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Switchgear Control:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIt supports all common busbar arrangements, including single busbar, double busbar, and one-and-a-half breaker schemes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterlocking and Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAdvanced programmable logic allows for complex interlocking schemes, ensuring that switching operations are performed safely and correctly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Earth-Fault Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn cases where high earth-fault currents are expected, the use of two-way cabling may be necessary to maintain measurement accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReactor Inrush Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe maximum through-fault current is often limited by reactor reactance, with typical inrush currents residing around 800 A.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Standards:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFully compliant with IEC 61850 standards, enabling seamless integration into Substation Automation Systems via GOOSE messaging and MMS.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46796388040894,"sku":"REC670","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_09-13-36.png?v=1778205709","url":"https:\/\/www.autooiltech.com\/products\/abb-rec670-bay-control-ied","provider":"AutoOilTech Limited","version":"1.0","type":"link"}